Air at the Belgrade-Stari grad station
Stari grad, Serbia
Network: Agency for Environmental Protection · Station code: RS0032A
This year, up to yesterday (October 7)
16 days
with a daily average of particulate matter PM10 above the EU limit of 50 µg/m³.
35 days are allowed in the whole year.
In 2025: 34 days above the limit, 35 allowed.
at least
5 days
with an 8-hour average of ozone (O₃) above the target value of 120 µg/m³.
Readings are missing for part of the period, so the real number may be higher.
Worst day: March 3, 2026, PM10 105 µg/m³ as a daily average, 2.1 times the limit.
Daily average for 258 of 280 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
Poor
Air now · Measured at 00:00
Latest values
Latest value: 00:00
| Pollutant | Value | Level |
|---|---|---|
| PM10 | 70 µg/m³ | Moderate |
| NO₂ | 77.7 µg/m³ | Poor |
| O₃ | 1.6 µg/m³ | Good |
How the air is changing
Over the last seven days there was more PM10, PM2.5, and NO₂ in the air than the week before.
- PM10: average 33.2 µg/m³, week before 22.9 µg/m³
- PM2.5: average 18.7 µg/m³, week before 16.8 µg/m³
- NO₂: average 37.2 µg/m³, week before 24.4 µg/m³
- O₃: average 27.7 µg/m³, week before 25.4 µg/m³
Last month there was more PM2.5 and less O₃ in the air than the month before.
- PM10: average 20.2 µg/m³, month before 19 µg/m³
- PM2.5: average 11.7 µg/m³, month before 9.6 µg/m³
- NO₂: average 21 µg/m³, month before 20.4 µg/m³
- O₃: average 38.7 µg/m³, month before 64.9 µg/m³
Show
Particulate matter PM10
70
Nowµg/m³
Measured at 00:00
49.1
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
33.2
Last 7 daysµg/m³
measured in 99 % of hours · provisional
23.7
Last 30 daysµg/m³
measured in 100 % of hours · provisional
27.8
Last 12 monthsµg/m³
measured in 94 % of hours · provisional
Days in 2023: PM10, daily average above 50 µg/m³
41 days above the limit.
- above the limit
- below the limit
- too few readings for the day
Days above the limit with values (41)
- Jan 1 117
- Jan 2 102
- Jan 3 59
- Jan 5 52
- Jan 7 67
- Jan 8 61
- Jan 12 52
- Jan 14 52
- Feb 11 82
- Feb 12 56
- Feb 13 63
- Feb 15 51
- Feb 16 85
- Feb 17 76
- Feb 18 52
- Feb 22 56
- Feb 23 56
- Mar 4 54
- Mar 20 51
- Mar 23 59
- Sep 29 52
- Oct 13 62
- Oct 14 59
- Oct 18 53
- Nov 21 53
- Nov 24 50
- Dec 9 52
- Dec 10 55
- Dec 11 56
- Dec 17 64
- Dec 18 145
- Dec 19 133
- Dec 20 100
- Dec 24 58
- Dec 25 94
- Dec 26 105
- Dec 27 65
- Dec 28 77
- Dec 29 94
- Dec 30 82
- Dec 31 68
Values in µg/m³, limit 50 µg/m³.
Months of 2023
| Month | Days above 50 | Highest day | No readings |
|---|---|---|---|
| January | 8 above the number allowed | 117 | 0 |
| February | 9 above the number allowed | 85 | 0 |
| March | 3 above the number allowed | 59 | 0 |
| April | 0 | 49 | 0 |
| May | 0 | 33 | 0 |
| June | 0 | 33 | 0 |
| July | 0 | 37 | 0 |
| August | 0 | 43 | 0 |
| September | 1 above the number allowed | 52 | 0 |
| October | 3 above the number allowed | 62 | 0 |
| November | 2 above the number allowed | 53 | 0 |
| December | 15 above the number allowed | 145 | 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 | ||
| 00:00 | 63 | model estimate, not counted |
| 23:00 | 76.4 | |
| 22:00 | 48.1 | |
| 21:00 | 55.9 | |
| 20:00 | 70.1 | |
| 19:00 | 41.3 | |
| 18:00 | 27.9 | |
| 17:00 | 20.8 | |
| 16:00 | 23.1 | |
| 15:00 | 37 | |
| 14:00 | 41.3 | |
| 13:00 | 57.6 | |
| 12:00 | 83.1 | |
| 11:00 | 67.3 | |
| 10:00 | 66.4 | |
| 09:00 | 54.8 | |
| 08:00 | 35.3 | |
| 07:00 | 36.2 | |
| 06:00 | 40.4 | |
| 05:00 | 52.3 | |
| 04:00 | 53.3 | |
| 03:00 | 40.2 | |
| 02:00 | 50.5 | |
| 01:00 | 66.1 | |
| Tuesday, 10/6 | ||
| 00:00 | 75.4 | |
| 23:00 | 54 | |
| 22:00 | 55.8 | |
| 21:00 | 57.3 | |
| 20:00 | 51.8 | |
| 19:00 | 31.5 | |
| 18:00 | 24.7 | |
| 17:00 | 26 | |
| 16:00 | 30 | |
| 15:00 | 51 | |
| 14:00 | 43.6 | |
| 13:00 | 54.2 | |
| 12:00 | 58.5 | |
| 11:00 | 61.5 | |
| 10:00 | 58.2 | |
| 09:00 | 46.7 | |
| 08:00 | 41.2 | |
| 07:00 | 31.9 | |
| 06:00 | 28.6 | |
| 05:00 | 32.7 | |
| 04:00 | 36.1 | |
| 03:00 | 41 | |
| 02:00 | 46 | |
| 01:00 | 57.2 | |
| Monday, 10/5 | ||
| 00:00 | 40.4 | |
| 23:00 | 46.2 | |
| 22:00 | 59.2 | |
| 21:00 | 63.2 | |
| 20:00 | 51.7 | |
| 19:00 | 39 | |
| 18:00 | 27.8 | |
| 17:00 | 25.9 | |
| 16:00 | 27 | |
| 15:00 | 31.5 | |
| 14:00 | 47.2 | |
| 13:00 | 71.4 | |
| 12:00 | 71.6 | |
| 11:00 | 54.7 | |
| 10:00 | 37.3 | |
| 09:00 | 31.9 | |
| 08:00 | 24 | |
| 07:00 | 21.5 | |
| 06:00 | 21.2 | |
| 05:00 | 24.7 | |
| 04:00 | 27.4 | |
| 03:00 | 29.7 | |
| 02:00 | 71.1 | |
| 01:00 | 79.9 | |
| Sunday, 10/4 | ||
| 00:00 | 59 | |
| 23:00 | 40.8 | |
| 22:00 | 52.3 | |
| 21:00 | 62.2 | |
| 20:00 | 36.1 | |
| 19:00 | 15.6 | |
| 18:00 | 9.9 | |
| 17:00 | 9.4 | |
| 16:00 | 11.9 | |
| 15:00 | 12.8 | |
| 14:00 | 14.3 | |
| 13:00 | 17.4 | |
| 12:00 | 17.5 | |
| 11:00 | 22.9 | |
| 10:00 | 22.4 | |
| 09:00 | 19.8 | |
| 08:00 | 17.7 | |
| 07:00 | 17 | |
| 06:00 | 17.7 | |
| 05:00 | 17.6 | |
| 04:00 | 26.7 | |
| 03:00 | 29.9 | |
| 02:00 | 26.1 | |
| 01:00 | 34.9 | |
| Saturday, 10/3 | ||
| 00:00 | 46.4 | |
| 23:00 | 42 | |
| 22:00 | 38.7 | |
| 21:00 | 33.7 | |
| 20:00 | 27.4 | |
| 19:00 | 19.5 | |
| 18:00 | 18.7 | |
| 17:00 | 21.9 | |
| 16:00 | 25.9 | |
| 15:00 | 14.4 | |
| 14:00 | 14.4 | |
| 13:00 | 15.4 | |
| 12:00 | 18.2 | |
| 11:00 | 29.6 | |
| 10:00 | 52.7 | |
| 09:00 | 34.7 | |
| 08:00 | 22.6 | |
| 07:00 | 21.9 | |
| 06:00 | 20.9 | |
| 05:00 | 17.6 | |
| 04:00 | 17.3 | |
| 03:00 | 20.3 | |
| 02:00 | 13.9 | |
| 01:00 | 14.9 | |
| Friday, 10/2 | ||
| 00:00 | 39.4 | |
| 23:00 | 43.8 | |
| 22:00 | 48.2 | |
| 21:00 | 42.5 | |
| 20:00 | 23.5 | |
| 19:00 | 13.9 | |
| 18:00 | 14.1 | |
| 17:00 | 23 | |
| 16:00 | 19.5 | |
| 15:00 | 21.8 | |
| 14:00 | 19.1 | |
| 13:00 | 20.9 | |
| 12:00 | 21.9 | |
| 11:00 | 21.6 | |
| 10:00 | 24.7 | |
| 09:00 | 38 | |
| 08:00 | 28.9 | |
| 07:00 | 33.8 | |
| 06:00 | 31.8 | |
| 05:00 | 27 | |
| 04:00 | 19.9 | |
| 03:00 | 17.3 | |
| 02:00 | 18.5 | |
| 01:00 | 19.5 | |
| Thursday, 10/1 | ||
| 00:00 | 19.5 | |
| 23:00 | 21.8 | |
| 22:00 | 23.4 | |
| 21:00 | 24.6 | |
| 20:00 | 20.5 | |
| 19:00 | 13.3 | |
| 18:00 | 15.3 | |
| 17:00 | 17.1 | |
| 16:00 | 14.3 | |
| 15:00 | 16.8 | |
| 14:00 | 19.5 | |
| 13:00 | 14.9 | |
| 12:00 | 17.4 | |
| 11:00 | 19 | |
| 10:00 | 18.4 | |
| 09:00 | 25.7 | |
| 08:00 | 18.3 | |
| 07:00 | 15.1 | |
| 06:00 | 16.8 | |
| 05:00 | 16.6 | |
| 04:00 | 15.7 | |
| 03:00 | 16.3 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Wed, 10/7 | 49.8 | provisional |
| Tue, 10/6 | 45.6 | provisional |
| Mon, 10/5 | 42.7 | provisional |
| Sun, 10/4 | 25.5 | provisional |
| Sat, 10/3 | 25.1 | provisional |
| Fri, 10/2 | 26.4 | provisional |
| Thu, 10/1 | 18.3 | provisional |
| Wed, 9/30 | 17.8 | provisional |
| Tue, 9/29 | 34.5 | provisional |
| Mon, 9/28 | 25.8 | provisional |
| Sun, 9/27 | 26.7 | provisional |
| Sat, 9/26 | 26.2 | provisional |
| Fri, 9/25 | 14.7 | provisional |
| Thu, 9/24 | 14.3 | provisional |
| Wed, 9/23 | 10.4 | provisional |
| Tue, 9/22 | 14.8 | provisional |
| Mon, 9/21 | 25.3 | provisional |
| Sun, 9/20 | 25.5 | provisional |
| Sat, 9/19 | 22.3 | provisional |
| Fri, 9/18 | 19.1 | provisional |
| Thu, 9/17 | 19.2 | provisional |
| Wed, 9/16 | 23 | provisional |
| Tue, 9/15 | 16.8 | provisional |
| Mon, 9/14 | 17.9 | provisional |
| Sun, 9/13 | 15.8 | provisional |
| Sat, 9/12 | 13.1 | provisional |
| Fri, 9/11 | 26.6 | provisional |
| Thu, 9/10 | 23.6 | provisional |
| Wed, 9/9 | 24.9 | provisional |
| Tue, 9/8 | 21.9 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 33.2 | 10.2 | measured in 99 % of hours · provisional · year before: same days |
| September 2026 | 20.2 | 11.2 | measured in 100 % of hours · provisional |
| August 2026 | 19 | 10.1 | measured in 99 % of hours · provisional |
| July 2026 | 18.8 | 13.9 | measured in 100 % of hours · provisional |
| June 2026 | too few readings | 20.5 | measured in 70 % of hours · provisional · 8 days without data from the station |
| May 2026 | too few readings | 17.3 | measured in 66 % of hours · provisional · 9 days without data from the station |
| April 2026 | 24.1 | 22.5 | measured in 100 % of hours · provisional |
| March 2026 | 37.6 | 33.9 | measured in 100 % of hours · provisional |
| February 2026 | 25.7 | 43.6 | measured in 100 % of hours · provisional |
| January 2026 | 37.7 | 39 | measured in 100 % of hours · provisional |
| December 2025 | 42.8 | 41.9 | measured in 100 % of hours · verified |
| November 2025 | 30.6 | 41.7 | measured in 100 % of hours · verified |
PM10 by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days above 50 µg/m³ (allowed 35) | 16 | 34 | 58 above the number allowed |
| Annual average, µg/m³ (EU limit 40) | 25.6* | 25.7 | 33.5 |
| Highest daily average, µg/m³ | 105March 3 | 121December 19 | 126December 30 |
| Highest hourly value, µg/m³ | 194January 15 | 735October 30 | 214March 31 |
| Hours measured | 93 % | 100 % | 99 % |
| Days without any reading from the station | 17 | 0 | 0 |
* 2026 up to October 7; 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.
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 45 µg/m³, 18 days allowed. In 2023 there were 59 such days.
- WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2023 there were 59 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2023: 30 µg/m³.
- WHO 2021: annual average 15 µg/m³. Average in 2023: 30 µg/m³.
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 2023
| Day | Average | Times the limit |
|---|---|---|
| Dec 18, 2023 | 145 | 2.9 × |
| Dec 19, 2023 | 133 | 2.7 × |
| Jan 1, 2023 | 117 | 2.3 × |
| Dec 26, 2023 | 105 | 2.1 × |
| Jan 2, 2023 | 102 | 2.0 × |
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
18.7
Last 7 daysµg/m³
measured in 86 % of hours · provisional
14.4
Last 30 daysµg/m³
measured in 97 % of hours · provisional
18.7
Last 12 monthsµg/m³
measured in 94 % of hours · provisional
Months of 2023
| Month | Highest day | No readings |
|---|---|---|
| January | 105 | 0 |
| February | 74 | 0 |
| March | 43 | 0 |
| April | 44 | 0 |
| May | 21 | 0 |
| June | 24 | 0 |
| July | 22 | 0 |
| August | 28 | 0 |
| September | 22 | 0 |
| October | 36 | 0 |
| November | 47 | 0 |
| December | 113 | 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 | ||
| 00:00 | 51.3 | |
| 23:00 | 33.2 | |
| 22:00 | 35.8 | |
| 21:00 | 33.8 | |
| 20:00 | 23.7 | |
| 19:00 | 13.5 | |
| 18:00 | 9.6 | |
| 17:00 | 10.2 | |
| 16:00 | 10.6 | |
| 15:00 | 12.8 | |
| 14:00 | 18.6 | |
| 13:00 | 29.5 | |
| 12:00 | 29.2 | |
| 11:00 | 33.7 | |
| 10:00 | 33.7 | |
| 09:00 | 33.2 | |
| 08:00 | 30.7 | |
| 07:00 | 23.8 | |
| 06:00 | 19.4 | |
| 05:00 | 22 | |
| 04:00 | 24.7 | |
| 03:00 | 29.4 | |
| 02:00 | 31 | |
| 01:00 | 38.5 | |
| Monday, 10/5 | ||
| 00:00 | 25.8 | |
| 23:00 | 33.4 | |
| 22:00 | 42.3 | |
| 21:00 | 39.5 | |
| 20:00 | 29.6 | |
| 19:00 | 23.5 | |
| 18:00 | 17.4 | |
| 17:00 | 11.9 | |
| 16:00 | 12.5 | |
| 15:00 | 18.4 | |
| 14:00 | 23.8 | |
| 13:00 | 36.2 | |
| 12:00 | 42.6 | |
| 11:00 | 35.6 | |
| 10:00 | 20.5 | |
| 09:00 | 21.5 | |
| 08:00 | 16.3 | |
| 07:00 | 16.6 | |
| 06:00 | 16.5 | |
| 05:00 | 18.9 | |
| 04:00 | 20.6 | |
| 03:00 | 23.3 | |
| 02:00 | 61.3 | |
| 01:00 | 66.7 | |
| Sunday, 10/4 | ||
| 00:00 | 51.4 | |
| 23:00 | 34.9 | |
| 22:00 | 41.6 | |
| 21:00 | 45.4 | |
| 20:00 | 27 | |
| 19:00 | 11.2 | |
| 18:00 | 4.6 | |
| 17:00 | 4.4 | |
| 16:00 | 5.5 | |
| 15:00 | 6 | |
| 14:00 | 6.6 | |
| 13:00 | 9.1 | |
| 12:00 | 9.6 | |
| 11:00 | 13.6 | |
| 10:00 | 14.3 | |
| 09:00 | 12.5 | |
| 08:00 | 11.3 | |
| 07:00 | 11.3 | |
| 06:00 | 11.9 | |
| 05:00 | 11.7 | |
| 04:00 | 19.5 | |
| 03:00 | 21.4 | |
| 02:00 | 18.9 | |
| 01:00 | 25.7 | |
| Saturday, 10/3 | ||
| 00:00 | 30.3 | |
| 23:00 | 28.5 | |
| 22:00 | 26.5 | |
| 21:00 | 23.5 | |
| 20:00 | 18.2 | |
| 19:00 | 12.2 | |
| 18:00 | 10.5 | |
| 17:00 | 11.4 | |
| 16:00 | 8.9 | |
| 15:00 | 6.4 | |
| 14:00 | 6.2 | |
| 13:00 | 7.9 | |
| 12:00 | 9.1 | |
| 11:00 | 10.7 | |
| 10:00 | 21.2 | |
| 09:00 | 20.2 | |
| 08:00 | 16.8 | |
| 07:00 | 15.6 | |
| 06:00 | 15.4 | |
| 05:00 | 11.7 | |
| 04:00 | 10.9 | |
| 03:00 | 12.8 | |
| 02:00 | 7.7 | |
| 01:00 | 9.7 | |
| Friday, 10/2 | ||
| 00:00 | 27.5 | |
| 23:00 | 28.2 | |
| 22:00 | 34.9 | |
| 21:00 | 25.8 | |
| 20:00 | 13.8 | |
| 19:00 | 6.8 | |
| 18:00 | 6.3 | |
| 17:00 | 7.3 | |
| 16:00 | 7.3 | |
| 15:00 | 8.1 | |
| 14:00 | 7.4 | |
| 13:00 | 9.7 | |
| 12:00 | 11.2 | |
| 11:00 | 11 | |
| 10:00 | 11.3 | |
| 09:00 | 16.5 | |
| 08:00 | 20 | |
| 07:00 | 26.2 | |
| 06:00 | 24.1 | |
| 05:00 | 19.7 | |
| 04:00 | 12.7 | |
| 03:00 | 9.8 | |
| 02:00 | 9.9 | |
| 01:00 | 10.2 | |
| Thursday, 10/1 | ||
| 00:00 | 10.5 | |
| 23:00 | 12.7 | |
| 22:00 | 14.6 | |
| 21:00 | 17.6 | |
| 20:00 | 14.1 | |
| 19:00 | 7.5 | |
| 18:00 | 7.1 | |
| 17:00 | 7.1 | |
| 16:00 | 6.3 | |
| 15:00 | 6.8 | |
| 14:00 | 7.3 | |
| 13:00 | 7.4 | |
| 12:00 | 9.7 | |
| 11:00 | 9.9 | |
| 10:00 | 9.6 | |
| 09:00 | 11.3 | |
| 08:00 | 10.1 | |
| 07:00 | 9.1 | |
| 06:00 | 9.6 | |
| 05:00 | 9.3 | |
| 04:00 | 8.7 | |
| 03:00 | 8.6 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Wed, 10/7 | no measurement | |
| Tue, 10/6 | 26.3 | provisional |
| Mon, 10/5 | 28.1 | provisional |
| Sun, 10/4 | 17.9 | provisional |
| Sat, 10/3 | 14.7 | provisional |
| Fri, 10/2 | 15.2 | provisional |
| Thu, 10/1 | 9.8 | provisional |
| Wed, 9/30 | 10 | provisional |
| Tue, 9/29 | 24.1 | provisional |
| Mon, 9/28 | 18.8 | provisional |
| Sun, 9/27 | 21.9 | provisional |
| Sat, 9/26 | 21.9 | provisional |
| Fri, 9/25 | 13.4 | provisional |
| Thu, 9/24 | 7.3 | provisional |
| Wed, 9/23 | 7.1 | provisional |
| Tue, 9/22 | 9.1 | provisional |
| Mon, 9/21 | 14.7 | provisional |
| Sun, 9/20 | 18.4 | provisional |
| Sat, 9/19 | 15.8 | provisional |
| Fri, 9/18 | 10.1 | provisional |
| Thu, 9/17 | 11 | provisional |
| Wed, 9/16 | 17.2 | provisional |
| Tue, 9/15 | 14.6 | provisional |
| Mon, 9/14 | 10.3 | provisional |
| Sun, 9/13 | 12 | provisional |
| Sat, 9/12 | 9.1 | provisional |
| Fri, 9/11 | 9.7 | provisional |
| Thu, 9/10 | 9 | provisional |
| Wed, 9/9 | 9.5 | provisional |
| Tue, 9/8 | 10.6 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 18.7 | too few readings | measured in 86 % of hours · provisional · year before: same days |
| September 2026 | 11.7 | 8.6 | measured in 100 % of hours · provisional |
| August 2026 | 9.6 | 7.6 | measured in 99 % of hours · provisional |
| July 2026 | 8.8 | 8.3 | measured in 100 % of hours · provisional |
| June 2026 | too few readings | 11.1 | measured in 70 % of hours · provisional · 8 days without data from the station |
| May 2026 | too few readings | 11.2 | measured in 66 % of hours · provisional · 9 days without data from the station |
| April 2026 | 13.5 | 14.5 | measured in 100 % of hours · provisional |
| March 2026 | 24.6 | 25.7 | measured in 100 % of hours · provisional |
| February 2026 | 20.8 | 38.4 | measured in 100 % of hours · provisional |
| January 2026 | 33.5 | 32.6 | measured in 100 % of hours · provisional |
| December 2025 | 35.3 | 37.6 | measured in 100 % of hours · verified |
| November 2025 | 23.3 | 38.7 | measured in 98 % of hours · verified |
PM2.5 by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Annual average, µg/m³ (EU limit 25) | 16.3* | 19.3 | 21.3 |
| Highest daily average, µg/m³ | 86January 15 | 98December 18 | 113December 30 |
| Highest hourly value, µg/m³ | 187January 15 | 166February 21 | 173December 30 |
| Hours measured | 92 % | 96 % | 98 % |
| Days without any reading from the station | 17 | 0 | 0 |
* 2026 up to October 7; 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.
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 25 µg/m³, 18 days allowed. In 2023 there were 82 such days.
- WHO 2021: daily 15 µg/m³, at most three to four days a year. In 2023 there were 184 such days.
- EU from 2030: annual average 10 µg/m³. Average in 2023: 21 µg/m³.
- WHO 2021: annual average 5 µg/m³. Average in 2023: 21 µg/m³.
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
77.7
Nowµg/m³
Measured at 00:00
53.3
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
37.2
Last 7 daysµg/m³
measured in 98 % of hours · provisional
25.1
Last 30 daysµg/m³
measured in 98 % of hours · provisional
too few readings
Last 12 months
measured in 79 % of hours · 2 months with too few readings · provisional
Days in 2023: NO₂, at least one hour above 200 µg/m³
No measured day above the limit.
- above the limit
- below the limit
- too few readings for the day
- no NO₂ data in the EEA database
Months of 2023
| Month | Days with an hour above 200 | Hours above 200 | Highest day | No readings |
|---|---|---|---|---|
| January | 0 | 0 | 39 | 0 |
| February | 0 | 0 | 56 | 0 |
| March | 0 | 0 | 50 | 0 |
| April | 0 | 0 | 38 | 0 |
| May | 0 | 0 | 30 | 0 |
| June | 0 | 0 | 30 | 0 |
| July | 0 | 0 | 38 | 0 |
| August | 0 | 0 | 41 | 0 |
| September | 0 | 0 | 59 | 0 |
| October | 0 | 0 | 50 | 0 |
| November | 0 | 0 | 43 | 0 |
| December | 0 | 0 | 58 | 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 | ||
| 00:00 | 21 | model estimate, not counted |
| 23:00 | 76.7 | |
| 22:00 | 77.9 | |
| 21:00 | 75.8 | |
| 20:00 | 71.2 | |
| 19:00 | 64.3 | |
| 18:00 | 34.1 | |
| 17:00 | 35.3 | |
| 16:00 | 30.6 | |
| 15:00 | 48.4 | |
| 14:00 | 53.8 | |
| 13:00 | 69.9 | |
| 12:00 | 75.7 | |
| 11:00 | 58.9 | |
| 10:00 | 40.4 | |
| 09:00 | 36.1 | |
| 08:00 | 35.2 | |
| 07:00 | 34.7 | |
| 06:00 | 38.9 | |
| 05:00 | 45.5 | |
| 04:00 | 45.7 | |
| 03:00 | 59.1 | |
| 02:00 | 65.2 | |
| 01:00 | 73.2 | |
| Tuesday, 10/6 | ||
| 00:00 | 78.5 | |
| 23:00 | 76.6 | |
| 22:00 | 77.9 | |
| 21:00 | 80.1 | |
| 20:00 | 67 | |
| 19:00 | 44.7 | |
| 18:00 | 19.8 | |
| 17:00 | 19.3 | |
| 16:00 | 17.6 | |
| 15:00 | 18.8 | |
| 14:00 | 38.5 | |
| 13:00 | 66.8 | |
| 12:00 | 72.3 | |
| 11:00 | 58.5 | |
| 10:00 | 54.5 | |
| 09:00 | 43 | |
| 08:00 | 43.6 | |
| 07:00 | 39.7 | |
| 06:00 | 40.8 | |
| 05:00 | 56.3 | |
| 04:00 | 64.1 | |
| 03:00 | 45.7 | |
| 02:00 | 71.8 | |
| 01:00 | 70.9 | |
| Monday, 10/5 | ||
| 00:00 | 62.5 | |
| 23:00 | 60.8 | |
| 21:00 | 70.3 | |
| 20:00 | 65.9 | |
| 19:00 | 37.9 | |
| 18:00 | 19.1 | |
| 17:00 | 15.9 | |
| 16:00 | 20.3 | |
| 15:00 | 25.8 | |
| 14:00 | 46.9 | |
| 13:00 | 59.1 | |
| 12:00 | 50.7 | |
| 11:00 | 39.1 | |
| 10:00 | 42.6 | |
| 09:00 | 38.5 | |
| 08:00 | 45.6 | |
| 07:00 | 36.2 | |
| 06:00 | 32.9 | |
| 05:00 | 44.3 | |
| 04:00 | 50.7 | |
| 03:00 | 56.8 | |
| 02:00 | 55.6 | |
| 01:00 | 57.8 | |
| Sunday, 10/4 | ||
| 00:00 | 61.4 | |
| 23:00 | 54.8 | |
| 22:00 | 63.6 | |
| 21:00 | 64 | |
| 20:00 | 62.8 | |
| 19:00 | 20.2 | |
| 18:00 | 13.1 | |
| 17:00 | 11.2 | |
| 16:00 | 13.7 | |
| 15:00 | 11.5 | |
| 14:00 | 10 | |
| 13:00 | 11.1 | |
| 12:00 | 15.7 | |
| 11:00 | 25.1 | |
| 10:00 | 23.3 | |
| 09:00 | 33.4 | |
| 08:00 | 23.6 | |
| 07:00 | 20.2 | |
| 06:00 | 20.1 | |
| 05:00 | 23.5 | |
| 04:00 | 41 | |
| 03:00 | 47.6 | |
| 02:00 | 45.3 | |
| 01:00 | 51.1 | |
| Saturday, 10/3 | ||
| 00:00 | 55.3 | |
| 23:00 | 57.6 | |
| 22:00 | 54.1 | |
| 21:00 | 50.2 | |
| 20:00 | 40.8 | |
| 19:00 | 18.5 | |
| 18:00 | 12.9 | |
| 17:00 | 12.4 | |
| 16:00 | 13.3 | |
| 15:00 | 11 | |
| 14:00 | 14.5 | |
| 13:00 | 16.2 | |
| 12:00 | 20.5 | |
| 11:00 | 25.7 | |
| 10:00 | 35.7 | |
| 09:00 | 30.8 | |
| 08:00 | 25.5 | |
| 07:00 | 29.5 | |
| 06:00 | 27.8 | |
| 05:00 | 24.1 | |
| 04:00 | 32.2 | |
| 03:00 | 46.3 | |
| 02:00 | 26.2 | |
| 01:00 | 38.8 | |
| Friday, 10/2 | ||
| 00:00 | 61.6 | |
| 23:00 | 59.7 | |
| 22:00 | 61.1 | |
| 20:00 | 35.5 | |
| 19:00 | 16.3 | |
| 18:00 | 13 | |
| 17:00 | 15.2 | |
| 16:00 | 13.5 | |
| 15:00 | 12.5 | |
| 14:00 | 12.9 | |
| 13:00 | 17.3 | |
| 12:00 | 23.9 | |
| 11:00 | 24.1 | |
| 10:00 | 27.7 | |
| 09:00 | 35.3 | |
| 08:00 | 25.5 | |
| 07:00 | 21.7 | |
| 06:00 | 27.6 | |
| 05:00 | 18.9 | |
| 04:00 | 19.9 | |
| 03:00 | 16.4 | |
| 02:00 | 19.6 | |
| 01:00 | 24.9 | |
| Thursday, 10/1 | ||
| 00:00 | 30.1 | |
| 23:00 | 31.6 | |
| 22:00 | 38.4 | |
| 21:00 | 38.3 | |
| 20:00 | 30 | |
| 19:00 | 19.3 | |
| 18:00 | 15.3 | |
| 17:00 | 15.4 | |
| 16:00 | 14.2 | |
| 15:00 | 13.7 | |
| 14:00 | 13.3 | |
| 13:00 | 13.3 | |
| 12:00 | 16.8 | |
| 11:00 | 20.7 | |
| 10:00 | 27.8 | |
| 09:00 | 35.7 | |
| 08:00 | 21.9 | |
| 07:00 | 11.4 | |
| 06:00 | 12.1 | |
| 05:00 | 11.2 | |
| 04:00 | 10.8 | |
| 03:00 | 12.1 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Wed, 10/7 | 54.2 | provisional |
| Tue, 10/6 | 52.8 | provisional |
| Mon, 10/5 | 45 | provisional |
| Sun, 10/4 | 32 | provisional |
| Sat, 10/3 | 30 | provisional |
| Fri, 10/2 | 26.3 | provisional |
| Thu, 10/1 | 20.5 | provisional |
| Wed, 9/30 | 19.5 | provisional |
| Tue, 9/29 | 39.7 | provisional |
| Mon, 9/28 | 30 | provisional |
| Sun, 9/27 | 26.7 | provisional |
| Sat, 9/26 | 19.6 | provisional |
| Fri, 9/25 | 15.3 | provisional |
| Thu, 9/24 | 20.3 | provisional |
| Wed, 9/23 | 17 | provisional |
| Tue, 9/22 | 15.3 | provisional |
| Mon, 9/21 | 21.2 | provisional |
| Sun, 9/20 | 31.6 | provisional |
| Sat, 9/19 | 21.4 | provisional |
| Fri, 9/18 | 19 | provisional |
| Thu, 9/17 | 29.3 | provisional |
| Wed, 9/16 | 24.9 | provisional |
| Tue, 9/15 | 14.8 | provisional |
| Mon, 9/14 | 24.6 | provisional |
| Sun, 9/13 | 15.3 | provisional |
| Sat, 9/12 | 12.4 | provisional |
| Fri, 9/11 | 19 | provisional |
| Thu, 9/10 | 15.4 | provisional |
| Wed, 9/9 | 17.8 | provisional |
| Tue, 9/8 | 24.6 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 37.2 | 13.5 | measured in 98 % of hours · provisional · year before: same days |
| September 2026 | 21 | 19.5 | measured in 98 % of hours · provisional |
| August 2026 | 20.4 | 19.1 | measured in 95 % of hours · provisional |
| July 2026 | 18.7 | 18.4 | measured in 99 % of hours · provisional |
| June 2026 | too few readings | 21.1 | measured in 68 % of hours · provisional · 8 days without data from the station |
| May 2026 | too few readings | 17.3 | measured in 65 % of hours · provisional · 9 days without data from the station |
| April 2026 | 18.2 | 19.5 | measured in 99 % of hours · provisional |
| March 2026 | 22 | 29.9 | measured in 98 % of hours · provisional |
| February 2026 | too few readings | 25.1 | measured in 32 % of hours · provisional |
| January 2026 | too few readings | 31.9 | |
| December 2025 | 22.1 | 30.5 | measured in 99 % of hours · verified |
| November 2025 | 19.2 | 32.7 | measured in 91 % of hours · verified |
NO₂ by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Hours above 200 µg/m³ (allowed 18) | 0² | 0 | 0 |
| Hours above 400 µg/m³, three hours in a row (alert threshold) | 0 | 0 | 0 |
| Annual average, µg/m³ (EU limit 40) | too few | 21.8 | 26.8 |
| Highest daily average, µg/m³ | 54October 7 | 70March 21 | 59February 1 |
| Highest hourly value, µg/m³ | 119August 4 | 144March 21 | 143September 2 |
| Hours measured | 73 % | 97 % | 98 % |
| Days without any reading from the station | 17 | 0 | 0 |
* 2026 up to October 7; 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 warning and alert thresholds: every such hour or day 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 2023 there were 11 such days.
- WHO 2021: daily 25 µg/m³, at most three to four days a year. In 2023 there were 163 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2023: 25 µg/m³.
- WHO 2021: annual average 10 µg/m³. Average in 2023: 25 µg/m³.
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
1.6
Nowµg/m³
Measured at 00:00
13.7
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
27.7
Last 7 daysµg/m³
measured in 96 % of hours · provisional
32.8
Last 30 daysµg/m³
measured in 98 % of hours · provisional
too few readings
Last 12 months
measured in 88 % of hours · 1 month with too few readings · provisional
Days in 2023: O₃, 8-hour average above 120 µg/m³
No measured day above the limit.
- above the limit
- below the limit
- too few readings for the day
Months of 2023
| Month | Days above 120 | Highest 8 h | No readings |
|---|---|---|---|
| January | 0 | 45 | 0 |
| February | 0 | 62 | 0 |
| March | 0 | 80 | 0 |
| April | 0 | 93 | 0 |
| May | 0 | 94 | 0 |
| June | 0 | 102 | 0 |
| July | 0 | 100 | 0 |
| August | 0 | 105 | 0 |
| September | 0 | 96 | 0 |
| October | 0 | 56 | 0 |
| November | 0 | 49 | 0 |
| December | 0 | 45 | 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 | ||
| 00:00 | 34 | model estimate, not counted |
| 23:00 | 2.8 | |
| 22:00 | 2.4 | |
| 21:00 | 3 | |
| 20:00 | 6.4 | |
| 19:00 | 12.2 | |
| 18:00 | 52.8 | |
| 17:00 | 52.5 | |
| 16:00 | 63.4 | |
| 15:00 | 48 | |
| 14:00 | 32.9 | |
| 13:00 | 13 | |
| 12:00 | 2.9 | |
| 11:00 | 0.9 | |
| 10:00 | 1.4 | |
| 09:00 | 1.5 | |
| 08:00 | 0.9 | |
| 07:00 | 0.6 | |
| 06:00 | 0.6 | |
| 05:00 | 0.9 | |
| 04:00 | 0.5 | |
| 03:00 | 0.8 | |
| 02:00 | 0.8 | |
| 01:00 | 1.6 | |
| Tuesday, 10/6 | ||
| 00:00 | 1.9 | |
| 23:00 | 1.7 | |
| 22:00 | 2.2 | |
| 21:00 | 1.6 | |
| 20:00 | 9.7 | |
| 19:00 | 37 | |
| 18:00 | 88.3 | |
| 17:00 | 88.8 | |
| 16:00 | 95.4 | |
| 15:00 | 88.6 | |
| 14:00 | 66.3 | |
| 13:00 | 26.3 | |
| 12:00 | 7.3 | |
| 11:00 | 1.8 | |
| 10:00 | 0.5 | |
| 09:00 | 0.7 | |
| 08:00 | 0.6 | |
| 07:00 | 3.6 | |
| 06:00 | 10.4 | |
| 05:00 | 1.9 | |
| 04:00 | 1.2 | |
| 03:00 | 12.2 | |
| 02:00 | 2.4 | |
| 01:00 | 1 | |
| Monday, 10/5 | ||
| 00:00 | 3.3 | |
| 23:00 | 7.4 | |
| 21:00 | 2.4 | |
| 20:00 | 9.7 | |
| 19:00 | 41.1 | |
| 18:00 | 77.8 | |
| 17:00 | 78.4 | |
| 16:00 | 72 | |
| 15:00 | 58.2 | |
| 14:00 | 37.8 | |
| 13:00 | 12.6 | |
| 12:00 | 13.8 | |
| 11:00 | 14.7 | |
| 10:00 | 6.5 | |
| 09:00 | 1.4 | |
| 08:00 | 1.4 | |
| 07:00 | 5 | |
| 06:00 | 8.4 | |
| 05:00 | 3.6 | |
| 04:00 | 1.5 | |
| 03:00 | 1.7 | |
| 02:00 | 1.4 | |
| 01:00 | 1.3 | |
| Sunday, 10/4 | ||
| 00:00 | 1.8 | |
| 23:00 | 3.8 | |
| 22:00 | 2.6 | |
| 21:00 | 3.3 | |
| 20:00 | 9.2 | |
| 19:00 | 53 | |
| 18:00 | 71.6 | |
| 17:00 | 77.5 | |
| 16:00 | 75.3 | |
| 15:00 | 73.7 | |
| 14:00 | 72.7 | |
| 13:00 | 64.9 | |
| 12:00 | 49.8 | |
| 11:00 | 22.8 | |
| 10:00 | 15.5 | |
| 09:00 | 5.5 | |
| 08:00 | 13.2 | |
| 07:00 | 17.8 | |
| 06:00 | 17.2 | |
| 05:00 | 16.1 | |
| 04:00 | 2.6 | |
| 03:00 | 1.3 | |
| 02:00 | 3.4 | |
| 01:00 | 1.7 | |
| Saturday, 10/3 | ||
| 00:00 | 1 | |
| 23:00 | 1.3 | |
| 22:00 | 2.4 | |
| 21:00 | 6.6 | |
| 20:00 | 20.6 | |
| 19:00 | 53.9 | |
| 18:00 | 72.2 | |
| 17:00 | 84.3 | |
| 16:00 | 74.9 | |
| 15:00 | 77.7 | |
| 14:00 | 68.4 | |
| 13:00 | 59.3 | |
| 09:00 | 1.6 | |
| 08:00 | 3.3 | |
| 07:00 | 2.3 | |
| 06:00 | 4.6 | |
| 05:00 | 15.8 | |
| 04:00 | 12.4 | |
| 03:00 | 6 | |
| 02:00 | 29.1 | |
| 01:00 | 20.6 | |
| Friday, 10/2 | ||
| 00:00 | 3.1 | |
| 23:00 | 1.1 | |
| 22:00 | 1.7 | |
| 20:00 | 22.8 | |
| 19:00 | 51.7 | |
| 18:00 | 70 | |
| 17:00 | 76.4 | |
| 16:00 | 78.6 | |
| 15:00 | 77.2 | |
| 14:00 | 72.2 | |
| 13:00 | 62.8 | |
| 12:00 | 46.6 | |
| 11:00 | 46 | |
| 10:00 | 33.8 | |
| 09:00 | 12.9 | |
| 08:00 | 8.9 | |
| 07:00 | 3.2 | |
| 06:00 | 4.7 | |
| 05:00 | 17.6 | |
| 04:00 | 27.1 | |
| 03:00 | 34.5 | |
| 02:00 | 39.6 | |
| 01:00 | 40.4 | |
| Thursday, 10/1 | ||
| 00:00 | 35.4 | |
| 23:00 | 36 | |
| 22:00 | 28.9 | |
| 21:00 | 28 | |
| 20:00 | 31.7 | |
| 19:00 | 54.4 | |
| 18:00 | 64 | |
| 17:00 | 64.1 | |
| 16:00 | 65.8 | |
| 15:00 | 68.8 | |
| 14:00 | 65.6 | |
| 13:00 | 62.2 | |
| 12:00 | 52.3 | |
| 11:00 | 42.3 | |
| 10:00 | 33.7 | |
| 09:00 | 16.5 | |
| 08:00 | 22.9 | |
| 07:00 | 31.2 | |
| 06:00 | 35 | |
| 05:00 | 33.2 | |
| 04:00 | 46.3 | |
| 03:00 | 48.4 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Wed, 10/7 | 35.2 | provisional |
| Tue, 10/6 | 62.6 | provisional |
| Mon, 10/5 | 49 | provisional |
| Sun, 10/4 | 67.3 | provisional |
| Sat, 10/3 | 72.8 | provisional |
| Fri, 10/2 | 66.9 | provisional |
| Thu, 10/1 | 62.1 | provisional |
| Wed, 9/30 | 57 | provisional |
| Tue, 9/29 | 46.1 | provisional |
| Mon, 9/28 | 57.6 | provisional |
| Sun, 9/27 | 59.3 | provisional |
| Sat, 9/26 | 48.9 | provisional |
| Fri, 9/25 | 37.1 | provisional |
| Thu, 9/24 | 45.6 | provisional |
| Wed, 9/23 | 42.4 | provisional |
| Tue, 9/22 | 45.5 | provisional |
| Mon, 9/21 | 52.1 | provisional |
| Sun, 9/20 | 92.9 | provisional |
| Sat, 9/19 | 74 | provisional |
| Fri, 9/18 | 61.8 | provisional |
| Thu, 9/17 | 66.1 | provisional |
| Wed, 9/16 | 57.1 | provisional |
| Tue, 9/15 | 50.5 | provisional |
| Mon, 9/14 | 59.9 | provisional |
| Sun, 9/13 | 68.4 | provisional |
| Sat, 9/12 | 67.2 | provisional |
| Fri, 9/11 | 55.3 | provisional |
| Thu, 9/10 | 67.5 | provisional |
| Wed, 9/9 | 89.3 | provisional |
| Tue, 9/8 | 95.9 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 27.7 | 20.7 | measured in 96 % of hours · provisional · year before: same days |
| September 2026 | 38.7 | 34.1 | measured in 98 % of hours · provisional |
| August 2026 | 64.9 | 51 | measured in 97 % of hours · provisional |
| July 2026 | 46.9 | 50 | measured in 99 % of hours · provisional |
| June 2026 | too few readings | 55 | measured in 19 % of hours · provisional · 8 days without data from the station |
| May 2026 | too few readings | 43.3 | measured in 65 % of hours · provisional · 9 days without data from the station |
| April 2026 | 53.1 | 50.5 | measured in 97 % of hours · provisional |
| March 2026 | 48.5 | 49.3 | measured in 98 % of hours · provisional |
| February 2026 | 31.8 | 42.6 | measured in 99 % of hours · provisional |
| January 2026 | 27.9 | 29.5 | measured in 99 % of hours · provisional |
| December 2025 | 15.7 | 20.7 | measured in 99 % of hours · verified |
| November 2025 | 17.8 | 22.7 | measured in 91 % of hours · verified |
O₃ by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days with 8-hour average above 120 µg/m³ (target value 25) | ≥ 5² | 5 | 15 |
| Annual average, µg/m³ | too few | 38.6 | 41 |
| Highest 8-hour average, µg/m³ | 139July 17 | 138July 6 | 182July 13 |
| Hours measured | 86 % | 96 % | 97 % |
| Days without any reading from the station | 17 | 0 | 0 |
* 2026 up to October 7; 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.
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: 19
2 outages, 462 hours in total in the last 12 months.
Timeline of outages from October 8, 2025 to today
| From | To | Duration |
|---|---|---|
| Jun 10, 2026 13:00 | Jun 19, 2026 13:00 | 9 days |
| May 18, 2026 11:00 | May 28, 2026 17:00 | 10 days |
Calculated from the hourly values the EEA publishes. If late values arrive afterwards, an outage gets shorter or disappears.
Where the data comes from
Measured by Agency for Environmental Protection. 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 EU limits come from Directive 2008/50/EC. Here they serve as a yardstick for comparison. 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.
samoEKO is a brand of samoLabs, Juelich.