Air at the Trebinje station
Trebinje, Republika Srpska
Network: Republic Hydrometeorological Institute of Republic of Srpska · Station code: BA0063A
This year, up to yesterday (October 6)
57 days
with an 8-hour average of ozone (O₃) above the target value of 120 µg/m³.
The target value allows 25 such days a year, averaged over three years.
In 2025: 21 days above the limit, the target value allows 25 as a three-year average.
11 days
with a daily average of particulate matter PM10 above the legal limit of 50 µg/m³.
35 days are allowed in the whole year.
Worst day: July 28, 2026, O₃ 205 µg/m³ as a daily average, 1.7 times the limit.
Daily average for 272 of 279 days · data for 2026 not yet finally verified · Yardstick: limits in Republika Srpska (Uredba, Official Gazette RS 124/12, as given in the RHMZ RS report)
No data has arrived from this station since October 6, 2026 at 15:00
No reading for 31 hours.
We take the readings from the European Environment Agency (EEA), and no new values for this station are coming from there. The cause may lie with the station itself or with the data transmission.
This station is one of 6 stations in Republika Srpska from which no data has been arriving since October 6, 2026. The data stopped at almost the same time. When data from several stations stops within a few hours, the cause is probably shared, for example in the data transmission. Where exactly, we cannot tell from here.
Last reading: October 6, 2026 at 15:00
Measured then: NO₂ 5.1 µg/m³, O₃ 106 µg/m³, PM10 14.3 µg/m³, PM2.5 8.4 µg/m³, SO₂ 5.7 µg/m³
Nearest station measuring now: Dubrovnik, Croatia, about 22 km away.
That reading is from another place. Your air may be better or worse.
How the air is changing
Over the last seven days there was more PM10, PM2.5, O₃, and SO₂ in the air than the week before.
- PM10: average 16 µg/m³, week before 8 µg/m³
- PM2.5: average 10.6 µg/m³, week before 5 µg/m³
- NO₂: average 5.9 µg/m³, week before 5.7 µg/m³
- O₃: average 72.5 µg/m³, week before 61.9 µg/m³
- SO₂: average 7 µg/m³, week before 5.2 µg/m³
Last month there was more SO₂ and less PM10, PM2.5, NO₂, and O₃ in the air than the month before.
- PM10: average 23 µg/m³, month before 32.3 µg/m³
- PM2.5: average 16.3 µg/m³, month before 21.8 µg/m³
- NO₂: average 6.2 µg/m³, month before 7.4 µg/m³
- O₃: average 80.7 µg/m³, month before 105.6 µg/m³
- SO₂: average 5.1 µg/m³, month before 2.9 µg/m³
Show
Particulate matter PM10
no measurement
Now
too few readings
Last 24 hours
measured in 0 % of hours
16
Last 7 daysµg/m³
measured in 95 % of hours · provisional
19.6
Last 30 daysµg/m³
measured in 99 % of hours · provisional
15.5
Last 12 monthsµg/m³
measured in 99 % of hours · provisional
Days in 2026: PM10, daily average above 50 µg/m³
11 days above the limit. 1 day without any reading from the station.
- above the limit
- below the limit
- too few readings for the day
- no data from the station
Days above the limit with values (11)
- Jan 25 53
- Aug 27 55
- Aug 28 58
- Aug 29 81
- Aug 30 75
- Aug 31 74
- Sep 1 55
- Sep 6 50
- Sep 7 79
- Sep 8 98
- Sep 9 56
Values in µg/m³, limit 50 µg/m³.
Months of 2026
| Month | Days above 50 | Highest day | No readings |
|---|---|---|---|
| January | 1 above the number allowed | 53 | 0 |
| February | 0 | 37 | 0 |
| March | 0 | 29 | 0 |
| April | 0 | 41 | 0 |
| May | 0 | 22 | 0 |
| June | 0 | 23 | 0 |
| July | 0 | 24 | 1 |
| August | 5 above the number allowed | 81 | 0 |
| September | 5 above the number allowed | 98 | 0 |
| October up to yesterday | 0 | 21 | 0 |
Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 21:00 | 15 | model estimate, not counted |
| 20:00 | 16 | model estimate, not counted |
| 19:00 | 15 | model estimate, not counted |
| 18:00 | 12 | model estimate, not counted |
| 17:00 | 11 | model estimate, not counted |
| 16:00 | 11 | model estimate, not counted |
| 15:00 | 11 | model estimate, not counted |
| 14:00 | 12 | model estimate, not counted |
| 13:00 | 12 | model estimate, not counted |
| 12:00 | 13 | model estimate, not counted |
| 11:00 | 15 | model estimate, not counted |
| 10:00 | 19 | model estimate, not counted |
| 09:00 | 32 | model estimate, not counted |
| 08:00 | 33 | model estimate, not counted |
| 07:00 | 35 | model estimate, not counted |
| 06:00 | 37 | model estimate, not counted |
| 05:00 | 37 | model estimate, not counted |
| 04:00 | 30 | model estimate, not counted |
| 03:00 | 28 | model estimate, not counted |
| 02:00 | 26 | model estimate, not counted |
| 01:00 | 26 | model estimate, not counted |
| Tuesday, 10/6 | ||
| 00:00 | 26 | model estimate, not counted |
| 23:00 | 26 | model estimate, not counted |
| 22:00 | 26 | model estimate, not counted |
| 21:00 | 26 | model estimate, not counted |
| 20:00 | 26 | model estimate, not counted |
| 19:00 | 26 | model estimate, not counted |
| 18:00 | 26 | model estimate, not counted |
| 17:00 | 26 | model estimate, not counted |
| 16:00 | 26 | model estimate, not counted |
| 15:00 | 14.3 | |
| 14:00 | 17.3 | |
| 13:00 | 30.5 | |
| 12:00 | 56.3 | |
| 11:00 | 58.8 | |
| 10:00 | 48.1 | |
| 09:00 | 38.9 | |
| 08:00 | 30.2 | |
| 07:00 | 20.8 | |
| 06:00 | 18.6 | |
| 05:00 | 16.7 | |
| 04:00 | 16.3 | |
| 03:00 | 15.3 | |
| 02:00 | 14.9 | |
| 01:00 | 16.3 | |
| Monday, 10/5 | ||
| 00:00 | 13.9 | |
| 23:00 | 13.7 | |
| 22:00 | 13.1 | |
| 21:00 | 15.7 | |
| 20:00 | 19.5 | |
| 19:00 | 15.8 | |
| 18:00 | 18.4 | |
| 17:00 | 15.6 | |
| 16:00 | 13 | |
| 15:00 | 14 | |
| 14:00 | 17.9 | |
| 13:00 | 22 | |
| 12:00 | 49 | |
| 11:00 | 45.3 | |
| 10:00 | 32.9 | |
| 09:00 | 27.5 | |
| 08:00 | 25.1 | |
| 07:00 | 20.3 | |
| 06:00 | 17.1 | |
| 05:00 | 15.5 | |
| 04:00 | 15.1 | |
| 03:00 | 13.5 | |
| 02:00 | 12.2 | |
| 01:00 | 12.2 | |
| Sunday, 10/4 | ||
| 00:00 | 12.6 | |
| 23:00 | 12.9 | |
| 22:00 | 12.9 | |
| 21:00 | 16.2 | |
| 20:00 | 17.8 | |
| 19:00 | 21.8 | |
| 18:00 | 14.8 | |
| 17:00 | 16.2 | |
| 16:00 | 19.4 | |
| 15:00 | 20 | |
| 14:00 | 23.3 | |
| 13:00 | 33.2 | |
| 12:00 | 53.6 | |
| 11:00 | 44.9 | |
| 10:00 | 34.8 | |
| 09:00 | 25.8 | |
| 08:00 | 23.2 | |
| 07:00 | 19.6 | |
| 06:00 | 15.9 | |
| 05:00 | 17.1 | |
| 04:00 | 15.9 | |
| 03:00 | 13.4 | |
| 02:00 | 13.1 | |
| 01:00 | 14.2 | |
| Saturday, 10/3 | ||
| 00:00 | 11.5 | |
| 23:00 | 11 | |
| 22:00 | 10.7 | |
| 21:00 | 14.4 | |
| 20:00 | 15.2 | |
| 19:00 | 14.2 | |
| 18:00 | 11.8 | |
| 17:00 | 11.2 | |
| 16:00 | 10 | |
| 15:00 | 10.6 | |
| 14:00 | 8.2 | |
| 13:00 | 8.2 | |
| 12:00 | 8.9 | |
| 11:00 | 11.7 | |
| 10:00 | 11.3 | |
| 09:00 | 11 | |
| 08:00 | 11.8 | |
| 07:00 | 11.1 | |
| 06:00 | 8.4 | |
| 05:00 | 8.7 | |
| 04:00 | 8.7 | |
| 03:00 | 9.5 | |
| 02:00 | 9.9 | |
| 01:00 | 10.4 | |
| Friday, 10/2 | ||
| 00:00 | 11.7 | |
| 23:00 | 12.5 | |
| 22:00 | 14.3 | |
| 21:00 | 13.5 | |
| 20:00 | 17.3 | |
| 19:00 | 14.9 | |
| 18:00 | 14.3 | |
| 17:00 | 13.1 | |
| 16:00 | 13.2 | |
| 15:00 | 12.7 | |
| 14:00 | 13.1 | |
| 13:00 | 16.4 | |
| 12:00 | 13.2 | |
| 11:00 | 14 | |
| 10:00 | 13.9 | |
| 09:00 | 15 | |
| 08:00 | 13.4 | |
| 07:00 | 11.6 | |
| 06:00 | 12.7 | |
| 05:00 | 10.9 | |
| 04:00 | 9.8 | |
| 03:00 | 8.4 | |
| 02:00 | 7.5 | |
| 01:00 | 7.9 | |
| Thursday, 10/1 | ||
| 00:00 | 8.8 | |
| 23:00 | 9.4 | |
| 22:00 | 12.7 | |
| 21:00 | 16.1 | |
| 20:00 | 21.6 | |
| 19:00 | 16.6 | |
| 18:00 | 14.7 | |
| 17:00 | 13.4 | |
| 16:00 | 10.8 | |
| 15:00 | 12.1 | |
| 14:00 | 13.7 | |
| 13:00 | 13.4 | |
| 12:00 | 12 | |
| 11:00 | 10.7 | |
| 10:00 | 11.7 | |
| 09:00 | 13.5 | |
| 08:00 | 13.3 | |
| 07:00 | 11.7 | |
| 06:00 | 11 | |
| 05:00 | 9.9 | |
| 04:00 | 9.7 | |
| 03:00 | 9.6 | |
| 02:00 | 9.5 | |
| 01:00 | 9.2 | |
| Wednesday, 9/30 | ||
| 00:00 | 9.9 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | too few readings | |
| Mon, 10/5 | 19.9 | provisional |
| Sun, 10/4 | 21.4 | provisional |
| Sat, 10/3 | 10.8 | provisional |
| Fri, 10/2 | 12.7 | provisional |
| Thu, 10/1 | 12.3 | provisional |
| Wed, 9/30 | 11.6 | provisional |
| Tue, 9/29 | 11.2 | provisional |
| Mon, 9/28 | 9.8 | provisional |
| Sun, 9/27 | 6.6 | provisional |
| Sat, 9/26 | 6.9 | provisional |
| Fri, 9/25 | 6 | provisional |
| Thu, 9/24 | 9.5 | provisional |
| Wed, 9/23 | 5.9 | provisional |
| Tue, 9/22 | 8.3 | provisional |
| Mon, 9/21 | 14.7 | provisional |
| Sun, 9/20 | 13.2 | provisional |
| Sat, 9/19 | 10.2 | provisional |
| Fri, 9/18 | 10.1 | provisional |
| Thu, 9/17 | 8.5 | provisional |
| Wed, 9/16 | 11.2 | provisional |
| Tue, 9/15 | 12.9 | provisional |
| Mon, 9/14 | 10.7 | provisional |
| Sun, 9/13 | 10.4 | provisional |
| Sat, 9/12 | 11.6 | provisional |
| Fri, 9/11 | 22.8 | provisional |
| Thu, 9/10 | 39.6 | provisional |
| Wed, 9/9 | 56 | above the limit · provisional |
| Tue, 9/8 | 98.5 | above the limit · provisional |
| Mon, 9/7 | 79.2 | above the limit · provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 16.8 | 5.8 | measured in 94 % of hours · provisional · year before: same days |
| September 2026 | 23 | 10.6 | measured in 100 % of hours · provisional |
| August 2026 | 32.3 | 16.6 | measured in 100 % of hours · provisional |
| July 2026 | 12.7 | 19.2 | measured in 90 % of hours · provisional · 1 day without data from the station |
| June 2026 | 12.8 | 19 | measured in 99 % of hours · provisional |
| May 2026 | 11.1 | 10.1 | measured in 100 % of hours · provisional |
| April 2026 | 13.9 | 11.4 | measured in 100 % of hours · provisional |
| March 2026 | 16.9 | too few readings | measured in 100 % of hours · provisional |
| February 2026 | 10.3 | measured in 100 % of hours · provisional | |
| January 2026 | 15.5 | measured in 100 % of hours · provisional | |
| December 2025 | 14.5 | measured in 100 % of hours · verified | |
| November 2025 | 10.6 | measured in 100 % of hours · verified |
PM10 by year
Yardstick: limits in Republika Srpska (Uredba, Official Gazette RS 124/12, as given in the RHMZ RS report)
| Measure | 2026* | 2025 | 2023 |
|---|---|---|---|
| Days above 50 µg/m³ (allowed 35) | 11 | ≥ 1² | 0 |
| Annual average, µg/m³ (legal limit 40) | 16.6* | too few | 9.5 |
| Highest daily average, µg/m³ | 98September 8 | 56July 9 | 37September 23 |
| Highest hourly value, µg/m³ | 285September 8 | 235July 9 | 133December 18 |
| Hours measured | 99 % | 79 % | 94 % |
| Days without any reading from the station | 1 | 0 | 0 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
≥ means at least: more than a tenth of the days or hours are missing, so the real number may be higher.
² Too few readings to compare with the number allowed: the figure covers only what was measured.
Unverified hourly values of particulate matter from 975 µg/m³ up, and single spikes from 500 µg/m³ up between low values, count as missing. In the verified data for BiH from 2023 to 2025 no hour was above 600 µg/m³.
■ and a figure in red: more than is allowed for the whole year.
Compared with the new EU rules and the WHO recommendation
This is not the yardstick for the verdict above, only a comparison. From 2030 the EU tightens its limits (Directive (EU) 2024/2881), and since 2021 the World Health Organization has recommended even lower values.
- EU from 2030: daily 45 µg/m³, 18 days allowed. In 2026 there were 13 such days.
- WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2026 there were 13 such days.
Sources: Directive (EU) 2024/2881, Annex I; WHO global air quality guidelines 2021, table 0.1. Checked against the texts on 7 October 2026.
The worst days of 2026
| Day | Average | Times the limit |
|---|---|---|
| Sep 8, 2026provisional | 98 | 2.0 × |
| Aug 29, 2026provisional | 81 | 1.6 × |
| Sep 7, 2026provisional | 79 | 1.6 × |
| Aug 30, 2026provisional | 75 | 1.5 × |
| Aug 31, 2026provisional | 74 | 1.5 × |
Daily average in µg/m³, daily limit 50 µg/m³. Days with the same unverified value over many hours are not on this list.
Particulate matter PM2.5
no measurement
Now
too few readings
Last 24 hours
measured in 0 % of hours
10.6
Last 7 daysµg/m³
measured in 95 % of hours · provisional
14.4
Last 30 daysµg/m³
measured in 99 % of hours · provisional
10.4
Last 12 monthsµg/m³
measured in 99 % of hours · provisional
Months of 2026
| Month | Highest day | No readings |
|---|---|---|
| January | 33 | 0 |
| February | 14 | 0 |
| March | 22 | 0 |
| April | 18 | 0 |
| May | 12 | 0 |
| June | 17 | 0 |
| July | 12 | 1 |
| August | 46 | 0 |
| September | 85 | 0 |
| October up to yesterday | 17 | 0 |
Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Tuesday, 10/6 | ||
| 15:00 | 8.4 | |
| 14:00 | 11.1 | |
| 13:00 | 20.6 | |
| 12:00 | 49 | |
| 11:00 | 53 | |
| 10:00 | 41.9 | |
| 09:00 | 33.9 | |
| 08:00 | 25 | |
| 07:00 | 17.2 | |
| 06:00 | 13.8 | |
| 05:00 | 12.3 | |
| 04:00 | 11.5 | |
| 03:00 | 10.9 | |
| 02:00 | 10.7 | |
| 01:00 | 10.4 | |
| Monday, 10/5 | ||
| 00:00 | 9.4 | |
| 23:00 | 9.4 | |
| 22:00 | 9.3 | |
| 21:00 | 9.7 | |
| 20:00 | 12.1 | |
| 19:00 | 9.8 | |
| 18:00 | 10.9 | |
| 17:00 | 8.3 | |
| 16:00 | 7.4 | |
| 15:00 | 7.9 | |
| 14:00 | 11.9 | |
| 13:00 | 15.4 | |
| 12:00 | 43.4 | |
| 11:00 | 40.2 | |
| 10:00 | 27.3 | |
| 09:00 | 23.5 | |
| 08:00 | 21.7 | |
| 07:00 | 16.7 | |
| 06:00 | 14.2 | |
| 05:00 | 12.7 | |
| 04:00 | 12.1 | |
| 03:00 | 10.4 | |
| 02:00 | 9.7 | |
| 01:00 | 9.5 | |
| Sunday, 10/4 | ||
| 00:00 | 9.4 | |
| 23:00 | 9.7 | |
| 22:00 | 9.9 | |
| 21:00 | 10.7 | |
| 20:00 | 11.2 | |
| 19:00 | 15 | |
| 18:00 | 8.9 | |
| 17:00 | 11.1 | |
| 16:00 | 12.5 | |
| 15:00 | 13.9 | |
| 14:00 | 17.2 | |
| 13:00 | 26.8 | |
| 12:00 | 47.2 | |
| 11:00 | 40 | |
| 10:00 | 30.9 | |
| 09:00 | 20.9 | |
| 08:00 | 18.5 | |
| 07:00 | 15.4 | |
| 06:00 | 12.4 | |
| 05:00 | 13.7 | |
| 04:00 | 12.2 | |
| 03:00 | 10.1 | |
| 02:00 | 9.1 | |
| 01:00 | 9.6 | |
| Saturday, 10/3 | ||
| 00:00 | 7 | |
| 23:00 | 6.8 | |
| 22:00 | 6.6 | |
| 21:00 | 8.4 | |
| 20:00 | 8.4 | |
| 19:00 | 7.3 | |
| 18:00 | 6.2 | |
| 17:00 | 5.8 | |
| 16:00 | 5.2 | |
| 15:00 | 4.4 | |
| 14:00 | 3.6 | |
| 13:00 | 4.4 | |
| 12:00 | 4.8 | |
| 11:00 | 6 | |
| 10:00 | 5.8 | |
| 09:00 | 5.7 | |
| 08:00 | 5.6 | |
| 07:00 | 5.4 | |
| 06:00 | 5 | |
| 05:00 | 5 | |
| 04:00 | 5.2 | |
| 03:00 | 5 | |
| 02:00 | 5.4 | |
| 01:00 | 6.7 | |
| Friday, 10/2 | ||
| 00:00 | 6.4 | |
| 23:00 | 6.3 | |
| 22:00 | 6.8 | |
| 21:00 | 7.9 | |
| 20:00 | 8.7 | |
| 19:00 | 6.6 | |
| 18:00 | 6.6 | |
| 17:00 | 6.3 | |
| 16:00 | 6.1 | |
| 15:00 | 6.2 | |
| 14:00 | 5 | |
| 13:00 | 5.6 | |
| 12:00 | 5.4 | |
| 11:00 | 5.7 | |
| 10:00 | 5.8 | |
| 09:00 | 6.5 | |
| 08:00 | 6.7 | |
| 07:00 | 6.1 | |
| 06:00 | 6 | |
| 05:00 | 5.6 | |
| 04:00 | 5.3 | |
| 03:00 | 4.6 | |
| 02:00 | 4.2 | |
| 01:00 | 4 | |
| Thursday, 10/1 | ||
| 00:00 | 4.5 | |
| 23:00 | 5.9 | |
| 22:00 | 7.7 | |
| 21:00 | 9.3 | |
| 20:00 | 8.9 | |
| 19:00 | 7.5 | |
| 18:00 | 6.8 | |
| 17:00 | 6.6 | |
| 16:00 | 6.2 | |
| 15:00 | 6.6 | |
| 14:00 | 6 | |
| 13:00 | 5.9 | |
| 12:00 | 5.6 | |
| 11:00 | 5.8 | |
| 10:00 | 6 | |
| 09:00 | 6.5 | |
| 08:00 | 7.2 | |
| 07:00 | 6.4 | |
| 06:00 | 6.2 | |
| 05:00 | 5.7 | |
| 04:00 | 5.4 | |
| 03:00 | 5.4 | |
| 02:00 | 5.3 | |
| 01:00 | 5.5 | |
| Wednesday, 9/30 | ||
| 00:00 | 5.9 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | too few readings | |
| Mon, 10/5 | 15.1 | provisional |
| Sun, 10/4 | 16.5 | provisional |
| Sat, 10/3 | 5.8 | provisional |
| Fri, 10/2 | 6 | provisional |
| Thu, 10/1 | 6.4 | provisional |
| Wed, 9/30 | 6.4 | provisional |
| Tue, 9/29 | 6.6 | provisional |
| Mon, 9/28 | 6.1 | provisional |
| Sun, 9/27 | 4.5 | provisional |
| Sat, 9/26 | 4.7 | provisional |
| Fri, 9/25 | 4.3 | provisional |
| Thu, 9/24 | 5.7 | provisional |
| Wed, 9/23 | 3 | provisional |
| Tue, 9/22 | 3.1 | provisional |
| Mon, 9/21 | 10.2 | provisional |
| Sun, 9/20 | 8.9 | provisional |
| Sat, 9/19 | 5.6 | provisional |
| Fri, 9/18 | 6.6 | provisional |
| Thu, 9/17 | 5.7 | provisional |
| Wed, 9/16 | 7.6 | provisional |
| Tue, 9/15 | 7.2 | provisional |
| Mon, 9/14 | 6.4 | provisional |
| Sun, 9/13 | 6.6 | provisional |
| Sat, 9/12 | 6.1 | provisional |
| Fri, 9/11 | 15.4 | provisional |
| Thu, 9/10 | 30.9 | provisional |
| Wed, 9/9 | 48 | provisional |
| Tue, 9/8 | 85.2 | provisional |
| Mon, 9/7 | 68.4 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 11.3 | 3.5 | measured in 94 % of hours · provisional · year before: same days |
| September 2026 | 16.3 | 5.6 | measured in 100 % of hours · provisional |
| August 2026 | 21.8 | 10.5 | measured in 100 % of hours · provisional |
| July 2026 | 7.2 | 11.8 | measured in 90 % of hours · provisional · 1 day without data from the station |
| June 2026 | 7.8 | 11.2 | measured in 99 % of hours · provisional |
| May 2026 | 5.8 | 5.7 | measured in 100 % of hours · provisional |
| April 2026 | 7.9 | 6.3 | measured in 100 % of hours · provisional |
| March 2026 | 12.2 | too few readings | measured in 100 % of hours · provisional |
| February 2026 | 7.5 | measured in 100 % of hours · provisional | |
| January 2026 | 11 | measured in 100 % of hours · provisional | |
| December 2025 | 11.6 | measured in 100 % of hours · verified | |
| November 2025 | 7.2 | measured in 100 % of hours · verified |
PM2.5 by year
Yardstick: limits in Republika Srpska (Uredba, Official Gazette RS 124/12, as given in the RHMZ RS report)
| Measure | 2026* | 2025 | 2023 |
|---|---|---|---|
| Annual average, µg/m³ (legal limit 25) | 10.9* | too few | too few |
| Highest daily average, µg/m³ | 85September 8 | 49July 9 | 25December 29 |
| Highest hourly value, µg/m³ | 252September 8 | 203July 9 | 125December 18 |
| Hours measured | 99 % | 79 % | 87 % |
| Days without any reading from the station | 1 | 0 | 0 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
Unverified hourly values of particulate matter from 975 µg/m³ up, and single spikes from 500 µg/m³ up between low values, count as missing. In the verified data for BiH from 2023 to 2025 no hour was above 600 µg/m³.
■ and a figure in red: more than is allowed for the whole year.
Compared with the new EU rules and the WHO recommendation
This is not the yardstick for the verdict above, only a comparison. From 2030 the EU tightens its limits (Directive (EU) 2024/2881), and since 2021 the World Health Organization has recommended even lower values.
- EU from 2030: daily 25 µg/m³, 18 days allowed. In 2026 there were 15 such days.
- WHO 2021: daily 15 µg/m³, at most three to four days a year. In 2026 there were 53 such days.
Sources: Directive (EU) 2024/2881, Annex I; WHO global air quality guidelines 2021, table 0.1. Checked against the texts on 7 October 2026.
Nitrogen dioxide NO₂
no measurement
Now
too few readings
Last 24 hours
measured in 0 % of hours
5.9
Last 7 daysµg/m³
measured in 95 % of hours · provisional
5.9
Last 30 daysµg/m³
measured in 99 % of hours · provisional
6.8
Last 12 monthsµg/m³
measured in 97 % of hours · provisional
Days in 2026: NO₂, daily average above 85 µg/m³
No measured day above the limit. 1 day without any reading from the station.
- above the limit
- below the limit
- too few readings for the day
- no data from the station
Months of 2026
| Month | Days above 85 | Hours above 150 | Highest day | No readings |
|---|---|---|---|---|
| January | 0 | 0 | 16 | 0 |
| February | 0 | 0 | 11 | 0 |
| March | 0 | 0 | 12 | 0 |
| April | 0 | 0 | 10 | 0 |
| May | 0 | 0 | 7 | 0 |
| June | 0 | 0 | 7 | 0 |
| July | 0 | 0 | 7 | 1 |
| August | 0 | 0 | 11 | 0 |
| September | 0 | 0 | 9 | 0 |
| October up to yesterday | 0 | 0 | 6 | 0 |
Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 21:00 | 4 | model estimate, not counted |
| 20:00 | 4 | model estimate, not counted |
| 19:00 | 4 | model estimate, not counted |
| 18:00 | 4 | model estimate, not counted |
| 17:00 | 3 | model estimate, not counted |
| 16:00 | 2 | model estimate, not counted |
| 15:00 | 2 | model estimate, not counted |
| 14:00 | 2 | model estimate, not counted |
| 13:00 | 2 | model estimate, not counted |
| 12:00 | 3 | model estimate, not counted |
| 11:00 | 3 | model estimate, not counted |
| 10:00 | 4 | model estimate, not counted |
| 09:00 | 6 | model estimate, not counted |
| 08:00 | 9 | model estimate, not counted |
| 07:00 | 7 | model estimate, not counted |
| 06:00 | 5 | model estimate, not counted |
| 05:00 | 4 | model estimate, not counted |
| 04:00 | 3 | model estimate, not counted |
| 03:00 | 3 | model estimate, not counted |
| 02:00 | 3 | model estimate, not counted |
| 01:00 | 4 | model estimate, not counted |
| Tuesday, 10/6 | ||
| 00:00 | 4 | model estimate, not counted |
| 23:00 | 4 | model estimate, not counted |
| 22:00 | 4 | model estimate, not counted |
| 21:00 | 4 | model estimate, not counted |
| 20:00 | 4 | model estimate, not counted |
| 19:00 | 4 | model estimate, not counted |
| 18:00 | 4 | model estimate, not counted |
| 17:00 | 4 | model estimate, not counted |
| 16:00 | 4 | model estimate, not counted |
| 15:00 | 5.1 | |
| 14:00 | 4.9 | |
| 13:00 | 4.8 | |
| 12:00 | 9.3 | |
| 11:00 | 10 | |
| 10:00 | 7.5 | |
| 09:00 | 7.3 | |
| 08:00 | 7.5 | |
| 07:00 | 4 | |
| 06:00 | 2.9 | |
| 05:00 | 2.9 | |
| 04:00 | 2.8 | |
| 03:00 | 2.7 | |
| 02:00 | 2.7 | |
| 01:00 | 3 | |
| Monday, 10/5 | ||
| 00:00 | 4 | |
| 23:00 | 6.1 | |
| 22:00 | 5.7 | |
| 21:00 | 9.3 | |
| 20:00 | 22.3 | |
| 19:00 | 17.8 | |
| 18:00 | 8.8 | |
| 17:00 | 4.9 | |
| 16:00 | 4.7 | |
| 15:00 | 4.3 | |
| 14:00 | 5.1 | |
| 13:00 | 6.1 | |
| 12:00 | 6.6 | |
| 11:00 | 6.9 | |
| 10:00 | 5.4 | |
| 09:00 | 4.9 | |
| 08:00 | 5.4 | |
| 07:00 | 4.6 | |
| 06:00 | 2.7 | |
| 05:00 | 2.3 | |
| 04:00 | 2.6 | |
| 03:00 | 2.4 | |
| 02:00 | 2.8 | |
| 01:00 | 2.9 | |
| Sunday, 10/4 | ||
| 00:00 | 3.3 | |
| 23:00 | 3.9 | |
| 22:00 | 6.7 | |
| 21:00 | 13.3 | |
| 20:00 | 20.8 | |
| 19:00 | 14.2 | |
| 18:00 | 6.9 | |
| 17:00 | 5 | |
| 16:00 | 5.6 | |
| 15:00 | 5.6 | |
| 14:00 | 5.4 | |
| 13:00 | 5.5 | |
| 12:00 | 6.4 | |
| 11:00 | 5.9 | |
| 10:00 | 4.5 | |
| 09:00 | 4.3 | |
| 08:00 | 4 | |
| 07:00 | 3.5 | |
| 06:00 | 2.9 | |
| 05:00 | 2.6 | |
| 04:00 | 3 | |
| 03:00 | 2.7 | |
| 02:00 | 2.8 | |
| 01:00 | 2.6 | |
| Saturday, 10/3 | ||
| 00:00 | 2.9 | |
| 23:00 | 4 | |
| 22:00 | 6.1 | |
| 21:00 | 8.6 | |
| 20:00 | 16.2 | |
| 19:00 | 6.6 | |
| 18:00 | 4.7 | |
| 17:00 | 3.9 | |
| 16:00 | 3.6 | |
| 15:00 | 5 | |
| 14:00 | 4 | |
| 13:00 | 5.3 | |
| 12:00 | 5 | |
| 11:00 | 5 | |
| 10:00 | 5.7 | |
| 09:00 | 6.6 | |
| 08:00 | 5.4 | |
| 07:00 | 4.9 | |
| 06:00 | 2.5 | |
| 05:00 | 2.3 | |
| 04:00 | 2.6 | |
| 03:00 | 2.3 | |
| 02:00 | 2.4 | |
| 01:00 | 2.9 | |
| Friday, 10/2 | ||
| 00:00 | 6.2 | |
| 23:00 | 6 | |
| 22:00 | 8.5 | |
| 21:00 | 7.8 | |
| 20:00 | 18.7 | |
| 19:00 | 9.5 | |
| 18:00 | 6 | |
| 17:00 | 6 | |
| 16:00 | 6.6 | |
| 15:00 | 5 | |
| 14:00 | 5.8 | |
| 13:00 | 7.9 | |
| 12:00 | 7.3 | |
| 11:00 | 5.7 | |
| 10:00 | 5.6 | |
| 09:00 | 7.1 | |
| 08:00 | 6.6 | |
| 07:00 | 4.4 | |
| 06:00 | 3.9 | |
| 05:00 | 2.9 | |
| 04:00 | 2.6 | |
| 03:00 | 2.3 | |
| 02:00 | 2.9 | |
| 01:00 | 2.8 | |
| Thursday, 10/1 | ||
| 00:00 | 3.6 | |
| 23:00 | 4.8 | |
| 22:00 | 5.3 | |
| 21:00 | 15.4 | |
| 20:00 | 19.8 | |
| 19:00 | 9.2 | |
| 18:00 | 5.7 | |
| 17:00 | 4.7 | |
| 16:00 | 3.6 | |
| 15:00 | 5 | |
| 14:00 | 3.8 | |
| 13:00 | 6.1 | |
| 12:00 | 5.5 | |
| 11:00 | 4 | |
| 10:00 | 4.2 | |
| 09:00 | 5 | |
| 08:00 | 6.2 | |
| 07:00 | 4.1 | |
| 06:00 | 3.5 | |
| 05:00 | 2.2 | |
| 04:00 | 1.6 | |
| 03:00 | 2.1 | |
| 02:00 | 2.1 | |
| 01:00 | 3.8 | |
| Wednesday, 9/30 | ||
| 00:00 | 3.8 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | too few readings | |
| Mon, 10/5 | 6.2 | provisional |
| Sun, 10/4 | 5.9 | provisional |
| Sat, 10/3 | 4.9 | provisional |
| Fri, 10/2 | 6.2 | provisional |
| Thu, 10/1 | 5.5 | provisional |
| Wed, 9/30 | 6.9 | provisional |
| Tue, 9/29 | 7.3 | provisional |
| Mon, 9/28 | 7.3 | provisional |
| Sun, 9/27 | 4.7 | provisional |
| Sat, 9/26 | 4.6 | provisional |
| Fri, 9/25 | 4.6 | provisional |
| Thu, 9/24 | 7.9 | provisional |
| Wed, 9/23 | 3.4 | provisional |
| Tue, 9/22 | 3.1 | provisional |
| Mon, 9/21 | 4.7 | provisional |
| Sun, 9/20 | 6.8 | provisional |
| Sat, 9/19 | 6.4 | provisional |
| Fri, 9/18 | 5 | provisional |
| Thu, 9/17 | 5.4 | provisional |
| Wed, 9/16 | 5.2 | provisional |
| Tue, 9/15 | 6.4 | provisional |
| Mon, 9/14 | 6 | provisional |
| Sun, 9/13 | 4.5 | provisional |
| Sat, 9/12 | 5.5 | provisional |
| Fri, 9/11 | 5.3 | provisional |
| Thu, 9/10 | 8.7 | provisional |
| Wed, 9/9 | 7 | provisional |
| Tue, 9/8 | 7.9 | provisional |
| Mon, 9/7 | 9.1 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 5.7 | 6.3 | measured in 94 % of hours · provisional · year before: same days |
| September 2026 | 6.2 | 7.1 | measured in 100 % of hours · provisional |
| August 2026 | 7.4 | 8.1 | measured in 100 % of hours · provisional |
| July 2026 | 5.1 | 7.5 | measured in 90 % of hours · provisional · 1 day without data from the station |
| June 2026 | 4.6 | 6.4 | measured in 99 % of hours · provisional |
| May 2026 | 4.8 | 6.4 | measured in 100 % of hours · provisional |
| April 2026 | 5.6 | 7.1 | measured in 100 % of hours · provisional |
| March 2026 | 7.6 | 8.5 | measured in 100 % of hours · provisional |
| February 2026 | 7.8 | 10.7 | measured in 100 % of hours · provisional |
| January 2026 | 7.7 | 10.3 | measured in 100 % of hours · provisional |
| December 2025 | 8 | 9.8 | measured in 100 % of hours · verified |
| November 2025 | 9.7 | 6.8 | measured in 79 % of hours · verified |
NO₂ by year
Yardstick: limits in Republika Srpska (Uredba, Official Gazette RS 124/12, as given in the RHMZ RS report)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days above 85 µg/m³ (none allowed) | 0 | 0 | 0² |
| Hours above 150 µg/m³ (allowed 18) | 0 | 0 | 0² |
| Hours above 400 µg/m³, three hours in a row (concentration dangerous to health) | 0 | 0 | 0 |
| Annual average, µg/m³ (legal limit 40) | 6.3* | 8.1 | 5.8¹ |
| Highest daily average, µg/m³ | 16January 14 | 18February 7 | 17December 17 |
| Highest hourly value, µg/m³ | 61January 20 | 73August 15 | 52January 24 |
| Hours measured | 99 % | 98 % | 87 % |
| Days without any reading from the station | 1 | 0 | 37 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
¹ Fewer than 90 % of the hours were measured, so we do not compare this average with the limit.
² Too few readings to compare with the number allowed: the figure covers only what was measured.
■ and a figure in red: more than is allowed for the whole year.
There is no allowed number for the concentration dangerous to health: every such hour is in red.
The column for 2023 is shown on wider screens.
Compared with the new EU rules and the WHO recommendation
This is not the yardstick for the verdict above, only a comparison. From 2030 the EU tightens its limits (Directive (EU) 2024/2881), and since 2021 the World Health Organization has recommended even lower values.
- EU from 2030: daily 50 µg/m³, 18 days allowed. In 2026 there were 0 such days.
- WHO 2021: daily 25 µg/m³, at most three to four days a year. In 2026 there were 0 such days.
Sources: Directive (EU) 2024/2881, Annex I; WHO global air quality guidelines 2021, table 0.1. Checked against the texts on 7 October 2026.
Ozone O₃
no measurement
Now
too few readings
Last 24 hours
measured in 0 % of hours
72.5
Last 7 daysµg/m³
measured in 91 % of hours · provisional
74.1
Last 30 daysµg/m³
measured in 95 % of hours · provisional
44.7
Last 12 monthsµg/m³
measured in 94 % of hours · provisional
Days in 2026: O₃, 8-hour average above 120 µg/m³
57 days above the limit. 1 day without any reading from the station.
- above the limit
- below the limit
- too few readings for the day
- no data from the station
Days above the limit with values (57)
- Jun 20 128
- Jun 21 127
- Jun 22 122
- Jun 23 126
- Jun 24 122
- Jun 25 131
- Jun 26 137
- Jun 27 153
- Jun 28 139
- Jun 29 133
- Jul 4 126
- Jul 6 124
- Jul 7 122
- Jul 10 124
- Jul 11 127
- Jul 12 129
- Jul 13 122
- Jul 14 131
- Jul 15 136
- Jul 16 145
- Jul 17 147
- Jul 18 144
- Jul 19 142
- Jul 20 143
- Jul 21 134
- Jul 23 129
- Jul 28 205
- Jul 30 127
- Jul 31 126
- Aug 1 125
- Aug 2 134
- Aug 3 133
- Aug 4 124
- Aug 5 122
- Aug 6 120
- Aug 7 134
- Aug 8 152
- Aug 9 157
- Aug 10 145
- Aug 11 139
- Aug 12 137
- Aug 13 142
- Aug 14 140
- Aug 15 126
- Aug 16 135
- Aug 17 122
- Aug 19 128
- Aug 20 123
- Aug 22 126
- Aug 23 130
- Aug 24 121
- Aug 25 124
- Sep 1 177
- Sep 2 153
- Sep 3 126
- Sep 4 123
- Sep 9 124
Values in µg/m³, limit 120 µg/m³.
Months of 2026
| Month | Days above 120 | Highest 8 h | No readings |
|---|---|---|---|
| January | 0 | 20 | 0 |
| February | 0 | 21 | 0 |
| March | 0 | 23 | 0 |
| April | 0 | 28 | 0 |
| May | 0 | 35 | 0 |
| June | 10 above the number allowed | 153 | 0 |
| July | 19 above the number allowed | 205 | 1 |
| August | 23 above the number allowed | 157 | 0 |
| September | 5 above the number allowed | 177 | 0 |
| October up to yesterday | 0 | 95 | 0 |
Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 21:00 | 66 | model estimate, not counted |
| 20:00 | 69 | model estimate, not counted |
| 19:00 | 80 | model estimate, not counted |
| 18:00 | 87 | model estimate, not counted |
| 17:00 | 92 | model estimate, not counted |
| 16:00 | 93 | model estimate, not counted |
| 15:00 | 92 | model estimate, not counted |
| 14:00 | 93 | model estimate, not counted |
| 13:00 | 92 | model estimate, not counted |
| 12:00 | 91 | model estimate, not counted |
| 11:00 | 87 | model estimate, not counted |
| 10:00 | 81 | model estimate, not counted |
| 09:00 | 64 | model estimate, not counted |
| 08:00 | 47 | model estimate, not counted |
| 07:00 | 48 | model estimate, not counted |
| 06:00 | 48 | model estimate, not counted |
| 05:00 | 49 | model estimate, not counted |
| 04:00 | 49 | model estimate, not counted |
| 03:00 | 50 | model estimate, not counted |
| 02:00 | 52 | model estimate, not counted |
| 01:00 | 52 | model estimate, not counted |
| Tuesday, 10/6 | ||
| 00:00 | 52 | model estimate, not counted |
| 23:00 | 52 | model estimate, not counted |
| 22:00 | 52 | model estimate, not counted |
| 21:00 | 52 | model estimate, not counted |
| 20:00 | 52 | model estimate, not counted |
| 19:00 | 52 | model estimate, not counted |
| 18:00 | 52 | model estimate, not counted |
| 17:00 | 52 | model estimate, not counted |
| 16:00 | 52 | model estimate, not counted |
| 15:00 | 106 | |
| 14:00 | 102.7 | |
| 13:00 | 96.6 | |
| 12:00 | 86.7 | |
| 11:00 | 67.2 | |
| 10:00 | 60.2 | |
| 09:00 | 58.7 | |
| 08:00 | 57 | |
| 07:00 | 59.6 | |
| 06:00 | 65.5 | |
| 05:00 | 66.4 | |
| 04:00 | 68.7 | |
| 03:00 | 74.3 | |
| 02:00 | 76.2 | |
| 01:00 | 78.7 | |
| Monday, 10/5 | ||
| 00:00 | 77.2 | |
| 22:00 | 79.7 | |
| 21:00 | 77.6 | |
| 20:00 | 69.8 | |
| 19:00 | 82.2 | |
| 18:00 | 94.9 | |
| 17:00 | 103 | |
| 16:00 | 103.7 | |
| 15:00 | 105.1 | |
| 14:00 | 98.1 | |
| 13:00 | 96.1 | |
| 12:00 | 74.2 | |
| 11:00 | 57.9 | |
| 10:00 | 57.6 | |
| 09:00 | 54.3 | |
| 08:00 | 54.5 | |
| 07:00 | 53.7 | |
| 06:00 | 61.9 | |
| 05:00 | 63.7 | |
| 04:00 | 64.3 | |
| 03:00 | 68.2 | |
| 02:00 | 69.9 | |
| 01:00 | 73.2 | |
| Sunday, 10/4 | ||
| 00:00 | 73.9 | |
| 22:00 | 70.1 | |
| 21:00 | 67 | |
| 20:00 | 68.7 | |
| 19:00 | 86.5 | |
| 18:00 | 97.8 | |
| 17:00 | 103 | |
| 16:00 | 108.4 | |
| 15:00 | 101.2 | |
| 14:00 | 93.9 | |
| 13:00 | 88.7 | |
| 12:00 | 75.4 | |
| 11:00 | 57 | |
| 10:00 | 52.8 | |
| 09:00 | 52.1 | |
| 08:00 | 50.7 | |
| 07:00 | 49.2 | |
| 06:00 | 54.9 | |
| 05:00 | 53.7 | |
| 04:00 | 54.4 | |
| 03:00 | 56.9 | |
| 02:00 | 62.1 | |
| 01:00 | 65.9 | |
| Saturday, 10/3 | ||
| 00:00 | 65.3 | |
| 22:00 | 61 | |
| 21:00 | 64.5 | |
| 20:00 | 65.8 | |
| 19:00 | 85.2 | |
| 18:00 | 94.6 | |
| 17:00 | 94 | |
| 16:00 | 96 | |
| 15:00 | 93 | |
| 14:00 | 89.2 | |
| 13:00 | 86 | |
| 12:00 | 80 | |
| 11:00 | 73 | |
| 10:00 | 68.7 | |
| 09:00 | 62 | |
| 08:00 | 66.7 | |
| 07:00 | 67.7 | |
| 06:00 | 72.6 | |
| 05:00 | 74.4 | |
| 04:00 | 71 | |
| 03:00 | 75.1 | |
| 02:00 | 72.7 | |
| 01:00 | 66.4 | |
| Friday, 10/2 | ||
| 00:00 | 62.4 | |
| 22:00 | 65.3 | |
| 21:00 | 67.8 | |
| 20:00 | 64 | |
| 19:00 | 82 | |
| 18:00 | 90.3 | |
| 17:00 | 93.9 | |
| 16:00 | 90.9 | |
| 15:00 | 91.7 | |
| 14:00 | 88.8 | |
| 13:00 | 82.9 | |
| 12:00 | 72.6 | |
| 11:00 | 64.8 | |
| 10:00 | 61 | |
| 09:00 | 53 | |
| 08:00 | 51.6 | |
| 07:00 | 51.1 | |
| 06:00 | 55.9 | |
| 05:00 | 60.7 | |
| 04:00 | 59.3 | |
| 03:00 | 62.1 | |
| 02:00 | 63.7 | |
| 01:00 | 62.7 | |
| Thursday, 10/1 | ||
| 00:00 | 62.2 | |
| 22:00 | 65 | |
| 21:00 | 54.9 | |
| 20:00 | 62.9 | |
| 19:00 | 78.4 | |
| 18:00 | 84.2 | |
| 17:00 | 86.1 | |
| 16:00 | 85.1 | |
| 15:00 | 85.4 | |
| 14:00 | 84.1 | |
| 13:00 | 79.1 | |
| 12:00 | 69.1 | |
| 11:00 | 59.6 | |
| 10:00 | 64.1 | |
| 09:00 | 56.9 | |
| 08:00 | 56.9 | |
| 07:00 | 53.9 | |
| 06:00 | 62.2 | |
| 05:00 | 66.5 | |
| 04:00 | 64.2 | |
| 03:00 | 66.4 | |
| 02:00 | 69.5 | |
| 01:00 | 63.2 | |
| Wednesday, 9/30 | ||
| 00:00 | 61.8 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | too few readings | |
| Mon, 10/5 | 94.7 | provisional |
| Sun, 10/4 | 94.4 | provisional |
| Sat, 10/3 | 89.7 | provisional |
| Fri, 10/2 | 86.7 | provisional |
| Thu, 10/1 | 81.4 | provisional |
| Wed, 9/30 | 85.5 | provisional |
| Tue, 9/29 | 92 | provisional |
| Mon, 9/28 | 79.8 | provisional |
| Sun, 9/27 | 69.9 | provisional |
| Sat, 9/26 | 62.4 | provisional |
| Fri, 9/25 | 60.7 | provisional |
| Thu, 9/24 | 65.9 | provisional |
| Wed, 9/23 | 69.8 | provisional |
| Tue, 9/22 | 77.2 | provisional |
| Mon, 9/21 | 92.1 | provisional |
| Sun, 9/20 | 103.3 | provisional |
| Sat, 9/19 | 74.3 | provisional |
| Fri, 9/18 | 92.3 | provisional |
| Thu, 9/17 | 92 | provisional |
| Wed, 9/16 | 86.9 | provisional |
| Tue, 9/15 | 92 | provisional |
| Mon, 9/14 | 103.8 | provisional |
| Sun, 9/13 | 97.2 | provisional |
| Sat, 9/12 | 91.7 | provisional |
| Fri, 9/11 | 89.1 | provisional |
| Thu, 9/10 | 114.4 | provisional |
| Wed, 9/9 | 124.1 | above the limit · provisional |
| Tue, 9/8 | 112.3 | provisional |
| Mon, 9/7 | 114.3 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 72.6 | 61.6 | measured in 90 % of hours · provisional · year before: same days |
| September 2026 | 80.7 | 67.4 | measured in 96 % of hours · provisional |
| August 2026 | 105.6 | 92.1 | measured in 96 % of hours · provisional |
| July 2026 | 111.2 | 93.5 | measured in 86 % of hours · provisional · 1 day without data from the station |
| June 2026 | 47.9 | 96.7 | measured in 95 % of hours · provisional |
| May 2026 | 18 | 80.2 | measured in 94 % of hours · provisional |
| April 2026 | 19.7 | 75 | measured in 96 % of hours · provisional |
| March 2026 | 16.3 | 75.1 | measured in 96 % of hours · provisional |
| February 2026 | 14.3 | 59.8 | measured in 96 % of hours · provisional |
| January 2026 | 13.8 | 54.2 | measured in 96 % of hours · provisional |
| December 2025 | 11.5 | 50 | measured in 100 % of hours · verified |
| November 2025 | 42.9 | 53.5 | measured in 79 % of hours · verified |
O₃ by year
Yardstick: limits in Republika Srpska (Uredba, Official Gazette RS 124/12, as given in the RHMZ RS report)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days with 8-hour average above 120 µg/m³ (target value 25) | 57 | 21 | ≥ 22² |
| Annual average, µg/m³ | 47.7* | 67.6 | too few |
| Highest 8-hour average, µg/m³ | 205July 28 | 146July 5 | 150July 1 |
| Hours measured | 94 % | 98 % | 67 % |
| Days without any reading from the station | 1 | 0 | 37 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
≥ means at least: more than a tenth of the days or hours are missing, so the real number may be higher.
² Too few readings to compare with the number allowed: the figure covers only what was measured.
■ and a figure in red: more than is allowed for the whole year.
The column for 2023 is shown on wider screens.
The worst days of 2026
| Day | Highest 8 h | Times the limit |
|---|---|---|
| Jul 28, 2026provisional | 205 | 1.7 × |
| Sep 1, 2026provisional | 177 | 1.5 × |
| Aug 9, 2026provisional | 157 | 1.3 × |
| Sep 2, 2026provisional | 153 | 1.3 × |
| Jun 27, 2026provisional | 153 | 1.3 × |
Daily average in µg/m³, daily limit 120 µg/m³. Days with the same unverified value over many hours are not on this list.
Sulphur dioxide SO₂
no measurement
Now
too few readings
Last 24 hours
measured in 0 % of hours
7
Last 7 daysµg/m³
measured in 91 % of hours · provisional
5.6
Last 30 daysµg/m³
measured in 95 % of hours · provisional
8.8
Last 12 monthsµg/m³
measured in 94 % of hours · provisional
Days in 2026: SO₂, daily average above 125 µg/m³
No measured day above the limit. 1 day without any reading from the station.
- above the limit
- below the limit
- too few readings for the day
- no data from the station
Months of 2026
| Month | Days above 125 | Hours above 350 | Highest day | No readings |
|---|---|---|---|---|
| January | 0 | 0 | 13 | 0 |
| February | 0 | 0 | 15 | 0 |
| March | 0 | 0 | 24 | 0 |
| April | 0 | 0 | 27 | 0 |
| May | 0 | 0 | 25 | 0 |
| June | 0 | 0 | 10 | 0 |
| July | 0 | 0 | 15 | 1 |
| August | 0 | 0 | 9 | 0 |
| September | 0 | 0 | 12 | 0 |
| October up to yesterday | 0 | 0 | 11 | 0 |
Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Tuesday, 10/6 | ||
| 15:00 | 5.7 | |
| 14:00 | 5.8 | |
| 13:00 | 6.2 | |
| 12:00 | 7.1 | |
| 11:00 | 7.3 | |
| 10:00 | 5.7 | |
| 09:00 | 5.5 | |
| 08:00 | 5.3 | |
| 07:00 | 5.1 | |
| 06:00 | 5.4 | |
| 05:00 | 5.7 | |
| 04:00 | 5.6 | |
| 03:00 | 5.6 | |
| 02:00 | 5.3 | |
| 01:00 | 5.5 | |
| Monday, 10/5 | ||
| 00:00 | 5.5 | |
| 22:00 | 5.6 | |
| 21:00 | 5.6 | |
| 20:00 | 5.8 | |
| 19:00 | 5.9 | |
| 18:00 | 6.3 | |
| 17:00 | 6.1 | |
| 16:00 | 5.8 | |
| 15:00 | 5.7 | |
| 14:00 | 6.1 | |
| 13:00 | 5.8 | |
| 12:00 | 6.1 | |
| 11:00 | 5.8 | |
| 10:00 | 5.9 | |
| 09:00 | 5.6 | |
| 08:00 | 5 | |
| 07:00 | 5.2 | |
| 06:00 | 5.3 | |
| 05:00 | 5.5 | |
| 04:00 | 5.6 | |
| 03:00 | 5.9 | |
| 02:00 | 5.6 | |
| 01:00 | 5.7 | |
| Sunday, 10/4 | ||
| 00:00 | 6.2 | |
| 22:00 | 6 | |
| 21:00 | 6 | |
| 20:00 | 5.9 | |
| 19:00 | 6.8 | |
| 18:00 | 6.9 | |
| 17:00 | 7 | |
| 16:00 | 7.3 | |
| 15:00 | 8.6 | |
| 14:00 | 11.1 | |
| 13:00 | 14 | |
| 12:00 | 19.9 | |
| 11:00 | 9.2 | |
| 10:00 | 7.1 | |
| 09:00 | 10.2 | |
| 08:00 | 7.9 | |
| 07:00 | 7.2 | |
| 06:00 | 7.6 | |
| 05:00 | 7.5 | |
| 04:00 | 7.7 | |
| 03:00 | 7.3 | |
| 02:00 | 8.3 | |
| 01:00 | 6 | |
| Saturday, 10/3 | ||
| 00:00 | 5 | |
| 22:00 | 4.9 | |
| 21:00 | 4.9 | |
| 20:00 | 4.8 | |
| 19:00 | 4.7 | |
| 18:00 | 5.1 | |
| 17:00 | 5.6 | |
| 16:00 | 6 | |
| 15:00 | 7 | |
| 14:00 | 8.8 | |
| 13:00 | 8.1 | |
| 12:00 | 8.9 | |
| 11:00 | 11.6 | |
| 10:00 | 12.2 | |
| 09:00 | 9.3 | |
| 08:00 | 9.8 | |
| 07:00 | 9.5 | |
| 06:00 | 5.5 | |
| 05:00 | 6 | |
| 04:00 | 7.5 | |
| 03:00 | 8.3 | |
| 02:00 | 5.7 | |
| 01:00 | 4.4 | |
| Friday, 10/2 | ||
| 00:00 | 4.7 | |
| 22:00 | 5.3 | |
| 21:00 | 4.9 | |
| 20:00 | 5 | |
| 19:00 | 4.8 | |
| 18:00 | 5.2 | |
| 17:00 | 5.4 | |
| 16:00 | 6 | |
| 15:00 | 6.6 | |
| 14:00 | 19.2 | |
| 13:00 | 34.3 | |
| 12:00 | 33.4 | |
| 11:00 | 27.8 | |
| 10:00 | 20 | |
| 09:00 | 18.4 | |
| 08:00 | 11 | |
| 07:00 | 10.1 | |
| 06:00 | 13.3 | |
| 05:00 | 9.7 | |
| 04:00 | 5.6 | |
| 03:00 | 4.3 | |
| 02:00 | 3.8 | |
| 01:00 | 4 | |
| Thursday, 10/1 | ||
| 00:00 | 4.3 | |
| 22:00 | 4.3 | |
| 21:00 | 4.3 | |
| 20:00 | 4.4 | |
| 19:00 | 4.5 | |
| 18:00 | 4.8 | |
| 17:00 | 5.2 | |
| 16:00 | 5.8 | |
| 15:00 | 6 | |
| 14:00 | 8.8 | |
| 13:00 | 8.7 | |
| 12:00 | 7 | |
| 11:00 | 7.5 | |
| 10:00 | 8.3 | |
| 09:00 | 11.3 | |
| 08:00 | 6.7 | |
| 07:00 | 4.9 | |
| 06:00 | 5.4 | |
| 05:00 | 4.2 | |
| 04:00 | 3.7 | |
| 03:00 | 3.8 | |
| 02:00 | 3.8 | |
| 01:00 | 3.8 | |
| Wednesday, 9/30 | ||
| 00:00 | 4.2 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | too few readings | |
| Mon, 10/5 | 5.7 | provisional |
| Sun, 10/4 | 8.3 | provisional |
| Sat, 10/3 | 7.1 | provisional |
| Fri, 10/2 | 11.4 | provisional |
| Thu, 10/1 | 5.7 | provisional |
| Wed, 9/30 | 4.6 | provisional |
| Tue, 9/29 | 7.3 | provisional |
| Mon, 9/28 | 4.2 | provisional |
| Sun, 9/27 | 3.5 | provisional |
| Sat, 9/26 | 3.9 | provisional |
| Fri, 9/25 | 3.7 | provisional |
| Thu, 9/24 | 7.2 | provisional |
| Wed, 9/23 | 6.4 | provisional |
| Tue, 9/22 | 10.7 | provisional |
| Mon, 9/21 | 9.8 | provisional |
| Sun, 9/20 | 4.3 | provisional |
| Sat, 9/19 | 2.2 | provisional |
| Fri, 9/18 | 2.4 | provisional |
| Thu, 9/17 | 2.6 | provisional |
| Wed, 9/16 | 4.3 | provisional |
| Tue, 9/15 | 12.2 | provisional |
| Mon, 9/14 | 5.4 | provisional |
| Sun, 9/13 | 8 | provisional |
| Sat, 9/12 | 6 | provisional |
| Fri, 9/11 | 2 | provisional |
| Thu, 9/10 | 2.5 | provisional |
| Wed, 9/9 | 2.6 | provisional |
| Tue, 9/8 | 4.1 | provisional |
| Mon, 9/7 | 4.5 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 7.4 | 25.7 | measured in 90 % of hours · provisional · year before: same days |
| September 2026 | 5.1 | 16 | measured in 96 % of hours · provisional |
| August 2026 | 2.9 | 13.8 | measured in 96 % of hours · provisional |
| July 2026 | 10.1 | 9.3 | measured in 86 % of hours · provisional · 1 day without data from the station |
| June 2026 | 8 | 7.8 | measured in 95 % of hours · provisional |
| May 2026 | 9.5 | 6.4 | measured in 96 % of hours · provisional |
| April 2026 | 10 | 4.8 | measured in 96 % of hours · provisional |
| March 2026 | 7.1 | 10.2 | measured in 96 % of hours · provisional |
| February 2026 | 6 | 16.3 | measured in 96 % of hours · provisional |
| January 2026 | 4.2 | 10.7 | measured in 96 % of hours · provisional |
| December 2025 | 5.1 | measured in 100 % of hours · verified | |
| November 2025 | 18.9 | measured in 79 % of hours · verified |
SO₂ by year
Yardstick: limits in Republika Srpska (Uredba, Official Gazette RS 124/12, as given in the RHMZ RS report)
| Measure | 2026* | 2025 | 2023 |
|---|---|---|---|
| Days above 125 µg/m³ (allowed 3) | 0 | 0 | 0² |
| Hours above 350 µg/m³ (allowed 24) | 0 | 0 | 0² |
| Hours above 500 µg/m³, three hours in a row (concentration dangerous to health) | 0 | 0 | 0 |
| Annual average, µg/m³ (legal limit 50) | 7* | 11.7 | too few |
| Highest daily average, µg/m³ | 27April 30 | 42September 30 | 53April 6 |
| Highest hourly value, µg/m³ | 84April 30 | 100September 30 | 105April 6 |
| Hours measured | 95 % | 98 % | 88 % |
| Days without any reading from the station | 1 | 0 | 0 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
² Too few readings to compare with the number allowed: the figure covers only what was measured.
■ and a figure in red: more than is allowed for the whole year.
There is no allowed number for the concentration dangerous to health: every such hour is in red.
Compared with the new EU rules and the WHO recommendation
This is not the yardstick for the verdict above, only a comparison. From 2030 the EU tightens its limits (Directive (EU) 2024/2881), and since 2021 the World Health Organization has recommended even lower values.
- EU from 2030: daily 50 µg/m³, 18 days allowed. In 2026 there were 0 such days.
- WHO 2021: daily 40 µg/m³, at most three to four days a year. In 2026 there were 0 such days.
Sources: Directive (EU) 2024/2881, Annex I; WHO global air quality guidelines 2021, table 0.1. Checked against the texts on 7 October 2026.
Outages in the last 12 months
Every period of at least 24 hours in which no reading arrived from this station.
Days without a reading: 3
2 outages, 64 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Oct 6, 2026 15:00 | still ongoing | 31 hours |
| Jul 1, 2026 23:00 | Jul 3, 2026 08:00 | 33 hours |
Calculated from the hourly values the EEA publishes. If late values arrive afterwards, an outage gets shorter or disappears.
Who is responsible
In Republika Srpska air quality is governed by the Air Protection Act (Official Gazette RS 124/11 and 46/17) and the Regulation on Air Quality Values (Official Gazette RS 124/12). The republic’s monitoring network is run by the Republic Hydrometeorological Institute (RHMZ RS), which publishes an air quality report every year.
We take the limit values from the RHMZ RS report for 2025, which cites the regulation. Unlike in the Federation of BiH, the hourly limit for nitrogen dioxide is 150 µg/m³, at most 18 times a year. As in the Federation, nitrogen dioxide also has a daily limit of 85 µg/m³ with no exceedance allowed. The regulation calls 500 µg/m³ of sulphur dioxide and 400 µg/m³ of nitrogen dioxide over three hours in a row a concentration dangerous to health.
We have not yet checked in the text of the law who in Republika Srpska must adopt a plan when a limit is exceeded, so we do not state it here.
We show measured values only. Whether an episode has been declared is decided by the competent authorities, who publish it on their own pages.
The limit values in BiH match the EU rules of 2008. Since 2021 the World Health Organization has recommended much lower values, for PM10 45 µg/m³ a day and 15 µg/m³ a year. From 2030 the EU lowers the annual PM10 limit to 20 µg/m³ (Directive (EU) 2024/2881).
We checked the rules against the published texts on 7 October 2026.
Where the data comes from
Measured by Republic Hydrometeorological Institute of Republic of Srpska. We take the values from the European Environment Agency (EEA) under the CC BY 4.0 licence.
Values marked provisional have not been fully checked by the network yet. The EEA publishes verified data for the previous year once a year, usually by the end of September.
An hourly value is the average of one hour. We show the end of the hour: the value to 18:00 was measured from 17:00 to 18:00.
A day runs from midnight to midnight local time.
We only show an average when at least three out of four hours in the period have a reading. The EU air quality directive requires this for daily averages, and we apply the same rule to longer periods. We compare an annual average with the EU limit only once 90 % of hours are measured, as the directive requires. For 12 months and for a year we ask for more: if less than 90 % of hours are measured, every full calendar month needs readings for at least half of its hours. Otherwise a whole season could be missing from the average, such as summer, when ozone is highest.
We do not call a difference of up to 10 % a change, nor one of up to 1 µg/m³ at low levels, because weather and measurement uncertainty alone cause differences that size.
When a station sends no reading, the EEA sometimes fills the hour with a model estimate. We draw those hours dashed and leave them out of every average.
The limits are those of Republika Srpska (Uredba o vrijednostima kvaliteta vazduha, Official Gazette RS 124/12), as listed by RHMZ RS in its report for 2025. Unlike in the FBiH, the hourly limit for NO₂ is 150 µg/m³. When more than a tenth of the days or hours are missing, the number of exceedances can only be higher, so we write “at least” in front of it.
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