Air at the Karpos station
Karpoš, North Macedonia
Network: Ministry of Environment and Physical Planning · Station code: MK0048A
This year, up to yesterday (October 6)
at least
30 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: 17 days above the limit, the target value allows 25 as a three-year average.
29 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.
Worst day: August 24, 2026, O₃ 159 µg/m³ as a daily average, 1.3 times the limit.
Daily average for 244 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
Moderate
Air now · Measured at 20:00
Latest values
Latest value: 20:00
| Pollutant | Value | Level |
|---|---|---|
| PM10 | 66.8 µg/m³ | Moderate |
| O₃ | 16.7 µg/m³ | Good |
| SO₂ | 5.3 µg/m³ | Good |
How the air is changing
Over the last seven days there was more PM10 and PM2.5 in the air than the week before.
- PM10: average 34 µg/m³, week before 21.8 µg/m³
- PM2.5: average 17.1 µg/m³, week before 11.6 µg/m³
- NO₂: too few readings to compare
- O₃: average 36.4 µg/m³, week before 38.6 µg/m³
- SO₂: average 3.5 µg/m³, week before 3.9 µg/m³
Last month there was less PM10 and O₃ in the air than the month before.
- PM10: average 29.6 µg/m³, month before 41.6 µg/m³
- PM2.5: average 14.7 µg/m³, month before 14.4 µg/m³
- NO₂: too few readings to compare
- O₃: average 55.2 µg/m³, month before 82.1 µg/m³
- SO₂: average 4 µg/m³, month before 4 µg/m³
Show
Particulate matter PM10
66.8
Nowµg/m³
Measured at 20:00
48.5
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
34
Last 7 daysµg/m³
measured in 100 % of hours · provisional
29.7
Last 30 daysµg/m³
measured in 100 % of hours · provisional
34
Last 12 monthsµg/m³
measured in 97 % of hours · provisional
Days in 2023: PM10, daily average above 50 µg/m³
53 days above the limit.
- above the limit
- below the limit
- too few readings for the day
- no PM10 data in the EEA database
Days above the limit with values (53)
- Jan 1 76
- Jan 2 62
- Jan 3 73
- Jan 6 126
- Jan 7 95
- Jan 8 117
- Jan 13 54
- Jan 14 109
- Jan 15 66
- Jan 16 76
- Jan 19 64
- Feb 2 53
- Feb 8 53
- Feb 9 59
- Feb 10 80
- Feb 12 73
- Feb 13 71
- Feb 16 81
- Feb 18 87
- Feb 19 73
- Feb 21 60
- Feb 22 68
- Mar 6 56
- Mar 20 55
- Mar 21 53
- Aug 24 63
- Sep 23 71
- Sep 24 55
- Oct 10 53
- Oct 11 52
- Oct 13 55
- Oct 14 57
- Oct 22 51
- Nov 14 54
- Nov 20 51
- Nov 24 51
- Dec 2 75
- Dec 5 92
- Dec 6 98
- Dec 10 66
- Dec 11 66
- Dec 12 74
- Dec 14 67
- Dec 18 76
- Dec 21 134
- Dec 22 76
- Dec 23 86
- Dec 25 138
- Dec 26 140
- Dec 27 129
- Dec 29 182
- Dec 30 182
- Dec 31 172
Values in µg/m³, limit 50 µg/m³.
Months of 2023
| Month | Days above 50 | Highest day | No readings |
|---|---|---|---|
| January | 11 above the number allowed | 126 | 0 |
| February | 11 above the number allowed | 87 | 0 |
| March | 3 above the number allowed | 56 | 0 |
| April | 0 | 38 | 0 |
| May | 0 | 35 | 0 |
| June | 0 | 42 | 0 |
| July | 0 | 44 | 0 |
| August | 1 above the number allowed | 63 | 0 |
| September | 2 above the number allowed | 71 | 0 |
| October | 5 above the number allowed | 57 | 0 |
| November | 3 above the number allowed | 54 | 0 |
| December | 17 above the number allowed | 182 | 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 | ||
| 20:00 | 62 | model estimate, not counted |
| 19:00 | 40.5 | |
| 18:00 | 35.1 | |
| 17:00 | 43.4 | |
| 16:00 | 36.1 | |
| 15:00 | 66 | |
| 14:00 | 44.9 | |
| 13:00 | 59 | |
| 12:00 | 62.7 | |
| 11:00 | 70 | |
| 10:00 | 65.1 | |
| 09:00 | 48.9 | |
| 08:00 | 31.5 | |
| 07:00 | 30.1 | |
| 06:00 | 29 | |
| 05:00 | 28.5 | |
| 04:00 | 35.7 | |
| 03:00 | 41.6 | |
| 02:00 | 63.1 | |
| 01:00 | 39.3 | |
| Tuesday, 10/6 | ||
| 00:00 | 51.4 | |
| 23:00 | 59.4 | |
| 22:00 | 86.4 | |
| 21:00 | 81.6 | |
| 20:00 | 52.5 | |
| 19:00 | 26.5 | |
| 18:00 | 24.7 | |
| 17:00 | 31.8 | |
| 16:00 | 25.7 | |
| 15:00 | 67.5 | |
| 14:00 | 47.2 | |
| 13:00 | 51.9 | |
| 12:00 | 54.8 | |
| 11:00 | 54.2 | |
| 10:00 | 59.6 | |
| 09:00 | 50.1 | |
| 08:00 | 30.6 | |
| 07:00 | 27.4 | |
| 06:00 | 31.4 | |
| 05:00 | 29.4 | |
| 04:00 | 31.3 | |
| 03:00 | 40.3 | |
| 02:00 | 38.7 | |
| 01:00 | 35.8 | |
| Monday, 10/5 | ||
| 00:00 | 59.8 | |
| 23:00 | 68.4 | |
| 22:00 | 87.5 | |
| 21:00 | 70.4 | |
| 20:00 | 53.9 | |
| 19:00 | 20.9 | |
| 18:00 | 23 | |
| 17:00 | 31.4 | |
| 16:00 | 19.4 | |
| 15:00 | 53.8 | |
| 14:00 | 34.8 | |
| 13:00 | 32 | |
| 12:00 | 40.7 | |
| 11:00 | 50.8 | |
| 10:00 | 55 | |
| 09:00 | 36 | |
| 08:00 | 21.5 | |
| 07:00 | 20.5 | |
| 06:00 | 21.5 | |
| 05:00 | 23.6 | |
| 04:00 | 29.6 | |
| 03:00 | 29 | |
| 02:00 | 28.3 | |
| 01:00 | 29.8 | |
| Sunday, 10/4 | ||
| 00:00 | 31.7 | |
| 23:00 | 37.9 | |
| 22:00 | 61.3 | |
| 21:00 | 63.6 | |
| 20:00 | 48.1 | |
| 19:00 | 20.6 | |
| 18:00 | 10.2 | |
| 17:00 | 25.9 | |
| 16:00 | 27 | |
| 15:00 | 14.7 | |
| 14:00 | 17.2 | |
| 13:00 | 17.7 | |
| 12:00 | 18.7 | |
| 11:00 | 18.8 | |
| 10:00 | 21.3 | |
| 09:00 | 20.3 | |
| 08:00 | 19.1 | |
| 07:00 | 13.8 | |
| 06:00 | 15.7 | |
| 05:00 | 19.5 | |
| 04:00 | 24.1 | |
| 03:00 | 30.2 | |
| 02:00 | 30.7 | |
| 01:00 | 32.1 | |
| Saturday, 10/3 | ||
| 00:00 | 37.4 | |
| 23:00 | 37.7 | |
| 22:00 | 53.1 | |
| 21:00 | 45.5 | |
| 20:00 | 53.3 | |
| 19:00 | 21.5 | |
| 18:00 | 14.3 | |
| 17:00 | 15.8 | |
| 16:00 | 16.6 | |
| 15:00 | 17.3 | |
| 14:00 | 15.9 | |
| 13:00 | 19.5 | |
| 12:00 | 19.4 | |
| 11:00 | 23.3 | |
| 10:00 | 27.9 | |
| 09:00 | 27.6 | |
| 08:00 | 14.3 | |
| 07:00 | 14.3 | |
| 06:00 | 14.6 | |
| 05:00 | 20.5 | |
| 04:00 | 23.6 | |
| 03:00 | 32.5 | |
| 02:00 | 32.3 | |
| 01:00 | 33.6 | |
| Friday, 10/2 | ||
| 00:00 | 36.5 | |
| 23:00 | 42.1 | |
| 22:00 | 50.4 | |
| 21:00 | 57.7 | |
| 20:00 | 52.2 | |
| 19:00 | 26.5 | |
| 18:00 | 34.2 | |
| 17:00 | 48.6 | |
| 16:00 | 15.9 | |
| 15:00 | 80.7 | |
| 14:00 | 60 | |
| 13:00 | 14.6 | |
| 12:00 | 79.4 | |
| 11:00 | 32.1 | |
| 10:00 | 28.1 | |
| 09:00 | 24.1 | |
| 08:00 | 15.8 | |
| 07:00 | 11.8 | |
| 06:00 | 11.9 | |
| 05:00 | 14.2 | |
| 04:00 | 19.4 | |
| 03:00 | 22.8 | |
| 02:00 | 32.2 | |
| 01:00 | 28.1 | |
| Thursday, 10/1 | ||
| 00:00 | 30.7 | |
| 23:00 | 33 | |
| 22:00 | 58 | |
| 21:00 | 67.3 | |
| 20:00 | 50.6 | |
| 19:00 | 19.2 | |
| 18:00 | 10.5 | |
| 17:00 | 26 | |
| 16:00 | 12.4 | |
| 15:00 | 70.1 | |
| 14:00 | 66 | |
| 13:00 | 19.1 | |
| 12:00 | 33.4 | |
| 11:00 | 29.2 | |
| 10:00 | 47.4 | |
| 09:00 | 31.3 | |
| 08:00 | 14.7 | |
| 07:00 | 12.4 | |
| 06:00 | 13.1 | |
| 05:00 | 14.2 | |
| 04:00 | 23.9 | |
| 03:00 | 27.7 | |
| 02:00 | 27.1 | |
| 01:00 | 28.8 | |
| Wednesday, 9/30 | ||
| 00:00 | 32.9 | |
| 23:00 | 35.7 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 45.4 | provisional |
| Mon, 10/5 | 39.2 | provisional |
| Sun, 10/4 | 26.7 | provisional |
| Sat, 10/3 | 26.3 | provisional |
| Fri, 10/2 | 35 | provisional |
| Thu, 10/1 | 31.9 | provisional |
| Wed, 9/30 | 33.5 | provisional |
| Tue, 9/29 | 21.4 | provisional |
| Mon, 9/28 | 18 | provisional |
| Sun, 9/27 | 11.1 | provisional |
| Sat, 9/26 | 13.7 | provisional |
| Fri, 9/25 | 29.8 | provisional |
| Thu, 9/24 | 31.9 | provisional |
| Wed, 9/23 | 26.5 | provisional |
| Tue, 9/22 | 21.1 | provisional |
| Mon, 9/21 | 26.8 | provisional |
| Sun, 9/20 | 27.2 | provisional |
| Sat, 9/19 | 28.9 | provisional |
| Fri, 9/18 | 35.7 | provisional |
| Thu, 9/17 | 33.1 | provisional |
| Wed, 9/16 | 21.8 | provisional |
| Tue, 9/15 | 19.8 | provisional |
| Mon, 9/14 | 18.8 | provisional |
| Sun, 9/13 | 12.8 | provisional |
| Sat, 9/12 | 31.6 | provisional |
| Fri, 9/11 | 46.3 | provisional |
| Thu, 9/10 | 52.9 | above the limit · provisional |
| Wed, 9/9 | 48.7 | provisional |
| Tue, 9/8 | 39.6 | provisional |
| Mon, 9/7 | 35.7 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 34.1 | 8.4 | measured in 100 % of hours · provisional · year before: same days |
| September 2026 | 29.6 | 20.2 | measured in 100 % of hours · provisional |
| August 2026 | 41.6 | 20.9 | measured in 100 % of hours · provisional |
| July 2026 | 24.3 | 22.3 | measured in 100 % of hours · provisional |
| June 2026 | 26 | 21.8 | measured in 100 % of hours · provisional |
| May 2026 | 20.3 | 16.4 | measured in 89 % of hours · provisional · 3 days without data from the station |
| April 2026 | 22.4 | 17.5 | measured in 93 % of hours · provisional · 1 day without data from the station |
| March 2026 | 36.3 | 31.5 | measured in 100 % of hours · provisional |
| February 2026 | 32.4 | 51.2 | measured in 100 % of hours · provisional |
| January 2026 | 51.6 | 59.3 | measured in 100 % of hours · provisional |
| December 2025 | 67.4 | 38.6 | measured in 99 % of hours · verified |
| November 2025 | 27.5 | 46.3 | 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) | 29 | 59 above the number allowed | 67 above the number allowed |
| Annual average, µg/m³ (EU limit 40) | 31.9* | 31.2 | 36 |
| Highest daily average, µg/m³ | 113January 16 | 192December 19 | 157January 2 |
| Highest hourly value, µg/m³ | 294August 16 | 280July 22 | 465September 3 |
| Hours measured | 98 % | 99 % | 97 % |
| Days without any reading from the station | 4 | 2 | 2 |
* 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.
¹ Fewer than 90 % of the hours were measured, so we do not compare this average with the limit.
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 66 such days.
- WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2023 there were 66 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 2023
| Day | Average | Times the limit |
|---|---|---|
| Dec 30, 2023 | 182 | 3.6 × |
| Dec 29, 2023 | 182 | 3.6 × |
| Dec 31, 2023 | 172 | 3.4 × |
| Dec 26, 2023 | 140 | 2.8 × |
| Dec 25, 2023 | 138 | 2.8 × |
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 13 % of hours · provisional
17.1
Last 7 daysµg/m³
measured in 100 % of hours · provisional
15.2
Last 30 daysµg/m³
measured in 100 % of hours · provisional
24.8
Last 12 monthsµg/m³
measured in 97 % of hours · provisional
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Tuesday, 10/6 | ||
| 00:00 | 30.1 | |
| 23:00 | 38.6 | |
| 22:00 | 42 | |
| 21:00 | 29.7 | |
| 20:00 | 21.3 | |
| 19:00 | 14.3 | |
| 18:00 | 11 | |
| 17:00 | 10.7 | |
| 16:00 | 12 | |
| 15:00 | 18.1 | |
| 14:00 | 21.5 | |
| 13:00 | 29.8 | |
| 12:00 | 34.2 | |
| 11:00 | 30.2 | |
| 10:00 | 30.1 | |
| 09:00 | 27.9 | |
| 08:00 | 25.1 | |
| 07:00 | 23.3 | |
| 06:00 | 25.7 | |
| 05:00 | 24.8 | |
| 04:00 | 26.3 | |
| 03:00 | 28.3 | |
| 02:00 | 30 | |
| 01:00 | 27.8 | |
| Monday, 10/5 | ||
| 00:00 | 37.4 | |
| 23:00 | 40.2 | |
| 22:00 | 39.8 | |
| 21:00 | 24.4 | |
| 20:00 | 16.9 | |
| 19:00 | 7.9 | |
| 18:00 | 13.9 | |
| 17:00 | 19.5 | |
| 16:00 | 10.5 | |
| 15:00 | 12.6 | |
| 14:00 | 17.4 | |
| 13:00 | 18.8 | |
| 12:00 | 25.9 | |
| 11:00 | 30.3 | |
| 10:00 | 27.9 | |
| 09:00 | 23.8 | |
| 08:00 | 20.6 | |
| 07:00 | 20 | |
| 06:00 | 20.4 | |
| 05:00 | 20.7 | |
| 04:00 | 20.7 | |
| 03:00 | 21.4 | |
| 02:00 | 20.4 | |
| 01:00 | 21.4 | |
| Sunday, 10/4 | ||
| 00:00 | 21.9 | |
| 23:00 | 23.7 | |
| 22:00 | 33.2 | |
| 21:00 | 28.6 | |
| 20:00 | 21.4 | |
| 19:00 | 9.2 | |
| 18:00 | 6 | |
| 17:00 | 6.8 | |
| 16:00 | 6.3 | |
| 15:00 | 6.9 | |
| 14:00 | 9.3 | |
| 13:00 | 10.5 | |
| 12:00 | 11.7 | |
| 11:00 | 12 | |
| 10:00 | 13.9 | |
| 09:00 | 15.2 | |
| 08:00 | 16.6 | |
| 07:00 | 13.8 | |
| 06:00 | 13.4 | |
| 05:00 | 13.8 | |
| 04:00 | 16.3 | |
| 03:00 | 18.8 | |
| 02:00 | 17.8 | |
| 01:00 | 18.2 | |
| Saturday, 10/3 | ||
| 00:00 | 18.5 | |
| 23:00 | 21 | |
| 22:00 | 22.9 | |
| 21:00 | 21.1 | |
| 20:00 | 18.8 | |
| 19:00 | 9.8 | |
| 18:00 | 7.6 | |
| 17:00 | 8.2 | |
| 16:00 | 6.6 | |
| 15:00 | 6 | |
| 14:00 | 5.6 | |
| 13:00 | 6.3 | |
| 12:00 | 9.1 | |
| 11:00 | 12.9 | |
| 10:00 | 14.7 | |
| 09:00 | 11.8 | |
| 08:00 | 10.6 | |
| 07:00 | 10.3 | |
| 06:00 | 12.1 | |
| 05:00 | 15 | |
| 04:00 | 18.2 | |
| 03:00 | 25.2 | |
| 02:00 | 26.3 | |
| 01:00 | 24.1 | |
| Friday, 10/2 | ||
| 00:00 | 18.3 | |
| 23:00 | 14.2 | |
| 22:00 | 13.3 | |
| 21:00 | 12.7 | |
| 20:00 | 10.1 | |
| 19:00 | 6.3 | |
| 18:00 | 7.1 | |
| 17:00 | 8.4 | |
| 16:00 | 6 | |
| 15:00 | 9.2 | |
| 14:00 | 8.3 | |
| 13:00 | 5 | |
| 12:00 | 12.8 | |
| 11:00 | 13.2 | |
| 10:00 | 13.5 | |
| 09:00 | 12.4 | |
| 08:00 | 11.2 | |
| 07:00 | 8.9 | |
| 06:00 | 10 | |
| 05:00 | 11.8 | |
| 04:00 | 14.8 | |
| 03:00 | 15.4 | |
| 02:00 | 20.5 | |
| 01:00 | 17.5 | |
| Thursday, 10/1 | ||
| 00:00 | 18.5 | |
| 23:00 | 18.9 | |
| 22:00 | 18.2 | |
| 21:00 | 15.9 | |
| 20:00 | 12.9 | |
| 19:00 | 6.2 | |
| 18:00 | 3.9 | |
| 17:00 | 5.1 | |
| 16:00 | 4.3 | |
| 15:00 | 8.6 | |
| 14:00 | 8 | |
| 13:00 | 8.5 | |
| 12:00 | 13.1 | |
| 11:00 | 14 | |
| 10:00 | 16.5 | |
| 09:00 | 13.6 | |
| 08:00 | 10.6 | |
| 07:00 | 10 | |
| 06:00 | 10.7 | |
| 05:00 | 13.1 | |
| 04:00 | 17.4 | |
| 03:00 | 18.7 | |
| 02:00 | 18.1 | |
| 01:00 | 19.5 | |
| Wednesday, 9/30 | ||
| 00:00 | 22 | |
| 23:00 | 19.8 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 25.5 | provisional |
| Mon, 10/5 | 22.2 | provisional |
| Sun, 10/4 | 15.2 | provisional |
| Sat, 10/3 | 14.3 | provisional |
| Fri, 10/2 | 11.7 | provisional |
| Thu, 10/1 | 12.7 | provisional |
| Wed, 9/30 | 18.1 | provisional |
| Tue, 9/29 | 12 | provisional |
| Mon, 9/28 | 9 | provisional |
| Sun, 9/27 | 8.7 | provisional |
| Sat, 9/26 | 12.6 | provisional |
| Fri, 9/25 | 19.3 | provisional |
| Thu, 9/24 | 12.8 | provisional |
| Wed, 9/23 | 7.2 | provisional |
| Tue, 9/22 | 5.7 | provisional |
| Mon, 9/21 | 18.2 | provisional |
| Sun, 9/20 | 17.9 | provisional |
| Sat, 9/19 | 15.8 | provisional |
| Fri, 9/18 | 18.4 | provisional |
| Thu, 9/17 | 15.7 | provisional |
| Wed, 9/16 | 10.8 | provisional |
| Tue, 9/15 | 11.7 | provisional |
| Mon, 9/14 | 11 | provisional |
| Sun, 9/13 | 8.7 | provisional |
| Sat, 9/12 | 15.8 | provisional |
| Fri, 9/11 | 20.1 | provisional |
| Thu, 9/10 | 28.2 | provisional |
| Wed, 9/9 | 25.5 | provisional |
| Tue, 9/8 | 19.7 | provisional |
| Mon, 9/7 | 11.4 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 16.9 | 9.1 | measured in 100 % of hours · provisional · year before: same days |
| September 2026 | 14.7 | 12.4 | measured in 100 % of hours · provisional |
| August 2026 | 14.4 | 12.5 | measured in 100 % of hours · provisional |
| July 2026 | 10.6 | 10.5 | measured in 100 % of hours · provisional |
| June 2026 | 9.8 | 10.4 | measured in 100 % of hours · provisional |
| May 2026 | 10.3 | 9.8 | measured in 89 % of hours · provisional · 3 days without data from the station |
| April 2026 | 13.5 | 12.2 | measured in 93 % of hours · provisional · 1 day without data from the station |
| March 2026 | 27.5 | 24.9 | measured in 100 % of hours · provisional |
| February 2026 | 28.6 | 48.2 | measured in 100 % of hours · provisional |
| January 2026 | 50.9 | 63 | measured in 100 % of hours · provisional |
| December 2025 | 63.3 | 43.6 | measured in 99 % of hours · verified |
| November 2025 | 29.6 | 47 | measured in 100 % 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) | 20.1* | 26.5 above the number allowed | too few |
| Highest daily average, µg/m³ | 107January 15 | 159December 19 | 108December 20 |
| Highest hourly value, µg/m³ | 163January 15 | 224January 1 | 180December 31 |
| Hours measured | 98 % | 98 % | 73 % |
| Days without any reading from the station | 4 | 2 | 2 |
* 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.
Nitrogen dioxide NO₂
no measurement
Now
too few readings
Last 24 hours
measured in 0 % of hours
too few readings
Last 7 days
measured in 0 % of hours
too few readings
Last 30 days
measured in 0 % of hours
too few readings
Last 12 months
measured in 55 % of hours · 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 | 27 | 0 |
| February | 0 | 0 | 30 | 0 |
| March | 0 | 0 | 24 | 0 |
| April | 0 | 0 | 18 | 0 |
| May | 0 | 0 | 4 | 0 |
| June | 0 | 0 | 6 | 0 |
| July | 0 | 0 | 7 | 0 |
| August | 0 | 0 | 4 | 0 |
| September | 0 | 0 | 4 | 0 |
| October | 0 | 0 | 6 | 0 |
| November | 0 | 0 | 8 | 0 |
| December | 0 | 0 | 7 | 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.
There are no readings for this period.
There are no readings for this period.
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | no measurement | |
| Mon, 10/5 | no measurement | |
| Sun, 10/4 | no measurement | |
| Sat, 10/3 | no measurement | |
| Fri, 10/2 | no measurement | |
| Thu, 10/1 | no measurement | |
| Wed, 9/30 | no measurement | |
| Tue, 9/29 | no measurement | |
| Mon, 9/28 | no measurement | |
| Sun, 9/27 | no measurement | |
| Sat, 9/26 | no measurement | |
| Fri, 9/25 | no measurement | |
| Thu, 9/24 | no measurement | |
| Wed, 9/23 | no measurement | |
| Tue, 9/22 | no measurement | |
| Mon, 9/21 | no measurement | |
| Sun, 9/20 | no measurement | |
| Sat, 9/19 | no measurement | |
| Fri, 9/18 | no measurement | |
| Thu, 9/17 | no measurement | |
| Wed, 9/16 | no measurement | |
| Tue, 9/15 | no measurement | |
| Mon, 9/14 | no measurement | |
| Sun, 9/13 | no measurement | |
| Sat, 9/12 | no measurement | |
| Fri, 9/11 | no measurement | |
| Thu, 9/10 | no measurement | |
| Wed, 9/9 | no measurement | |
| Tue, 9/8 | no measurement | |
| Mon, 9/7 | no measurement |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | too few readings | 19.9 | year before: same days |
| September 2026 | too few readings | 24.1 | |
| August 2026 | too few readings | 19.6 | |
| July 2026 | too few readings | 15.6 | |
| June 2026 | too few readings | 15 | |
| May 2026 | too few readings | 18.2 | 3 days without data from the station |
| April 2026 | 19 | 15.7 | measured in 93 % of hours · provisional · 1 day without data from the station |
| March 2026 | 26.3 | 32.6 | measured in 100 % of hours · provisional |
| February 2026 | 24.3 | 29.9 | measured in 99 % of hours · provisional |
| January 2026 | 28 | 29.2 | measured in 100 % of hours · provisional |
| December 2025 | 26.2 | 32.4 | measured in 100 % of hours · verified |
| November 2025 | 22.3 | 37.3 | measured in 100 % 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 | 0² |
| Hours above 400 µg/m³, three hours in a row (alert threshold) | 0 | 0 | 0 |
| Annual average, µg/m³ (EU limit 40) | too few | 22.5 | too few |
| Highest daily average, µg/m³ | 44January 13 | 48March 7 | 54November 27 |
| Highest hourly value, µg/m³ | 83March 2 | 118December 19 | 102November 27 |
| Hours measured | 42 % | 98 % | 74 % |
| Days without any reading from the station | 4 | 2 | 2 |
* 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 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 0 such days.
- WHO 2021: daily 25 µg/m³, at most three to four days a year. In 2023 there were 10 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
16.7
Nowµg/m³
Measured at 20:00
28.3
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
36.4
Last 7 daysµg/m³
measured in 100 % of hours · provisional
47.7
Last 30 daysµg/m³
measured in 100 % of hours · provisional
39.7
Last 12 monthsµg/m³
measured in 90 % of hours · provisional
Days in 2023: O₃, 8-hour average above 120 µg/m³
1 day above the limit.
- above the limit
- below the limit
- too few readings for the day
- no O₃ data in the EEA database
Days above the limit with values (1)
- Jul 14 122
Values in µg/m³, limit 120 µg/m³.
Months of 2023
| Month | Days above 120 | Highest 8 h | No readings |
|---|---|---|---|
| January | 0 | 39 | 0 |
| February | 0 | 65 | 0 |
| March | 0 | 82 | 0 |
| April | 0 | 95 | 0 |
| May | 0 | 77 | 0 |
| June | 0 | 92 | 0 |
| July | 1 above the number allowed | 122 | 0 |
| August | 0 | 100 | 0 |
| September | 0 | 92 | 0 |
| October | 0 | 113 | 0 |
| November | 0 | 112 | 0 |
| December | 0 | 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 |
|---|---|---|
| Wednesday, 10/7 | ||
| 20:00 | 38 | model estimate, not counted |
| 19:00 | 37.2 | |
| 18:00 | 78.9 | |
| 17:00 | 102.2 | |
| 16:00 | 97.6 | |
| 15:00 | 84.5 | |
| 14:00 | 52.2 | |
| 13:00 | 35 | |
| 12:00 | 17.7 | |
| 11:00 | 16.3 | |
| 10:00 | 8.9 | |
| 09:00 | 5.6 | |
| 08:00 | 6.8 | |
| 07:00 | 13.6 | |
| 06:00 | 15.4 | |
| 05:00 | 12.1 | |
| 04:00 | 6.3 | |
| 03:00 | 4.4 | |
| 02:00 | 4.6 | |
| 01:00 | 7 | |
| Tuesday, 10/6 | ||
| 00:00 | 6.6 | |
| 23:00 | 4.5 | |
| 22:00 | 4.8 | |
| 21:00 | 4.7 | |
| 20:00 | 8.6 | |
| 19:00 | 54.8 | |
| 18:00 | 86.3 | |
| 17:00 | 103.9 | |
| 16:00 | 97.4 | |
| 15:00 | 79.9 | |
| 14:00 | 70.4 | |
| 13:00 | 46.7 | |
| 12:00 | 21.8 | |
| 11:00 | 16.5 | |
| 10:00 | 8.3 | |
| 09:00 | 5.3 | |
| 08:00 | 4.6 | |
| 07:00 | 7.1 | |
| 06:00 | 11.6 | |
| 05:00 | 10.6 | |
| 04:00 | 12.9 | |
| 03:00 | 11.3 | |
| 02:00 | 12.3 | |
| 01:00 | 17.8 | |
| Monday, 10/5 | ||
| 00:00 | 6.4 | |
| 23:00 | 4.6 | |
| 22:00 | 5.3 | |
| 21:00 | 9.7 | |
| 20:00 | 14.9 | |
| 19:00 | 61.3 | |
| 18:00 | 92.7 | |
| 17:00 | 108 | |
| 16:00 | 87.5 | |
| 15:00 | 77.3 | |
| 14:00 | 45.3 | |
| 13:00 | 35.4 | |
| 12:00 | 18.4 | |
| 11:00 | 8.1 | |
| 10:00 | 6.9 | |
| 09:00 | 5.1 | |
| 08:00 | 5.6 | |
| 07:00 | 13 | |
| 06:00 | 14.3 | |
| 05:00 | 13.1 | |
| 04:00 | 10.6 | |
| 03:00 | 7.6 | |
| 02:00 | 11.5 | |
| 01:00 | 12.9 | |
| Sunday, 10/4 | ||
| 00:00 | 21 | |
| 23:00 | 24.1 | |
| 22:00 | 8.1 | |
| 21:00 | 6.6 | |
| 20:00 | 10 | |
| 19:00 | 54.2 | |
| 18:00 | 86.9 | |
| 17:00 | 92.4 | |
| 16:00 | 92.1 | |
| 15:00 | 92.2 | |
| 14:00 | 81.9 | |
| 13:00 | 68.6 | |
| 12:00 | 51.4 | |
| 11:00 | 34.9 | |
| 10:00 | 21.6 | |
| 09:00 | 15.5 | |
| 08:00 | 14.3 | |
| 07:00 | 17.3 | |
| 06:00 | 18.6 | |
| 05:00 | 16.8 | |
| 04:00 | 11.7 | |
| 03:00 | 6.9 | |
| 02:00 | 6.8 | |
| 01:00 | 5.8 | |
| Saturday, 10/3 | ||
| 00:00 | 7.7 | |
| 23:00 | 15.3 | |
| 22:00 | 15.5 | |
| 21:00 | 13.3 | |
| 20:00 | 29.1 | |
| 19:00 | 70.6 | |
| 18:00 | 97.2 | |
| 17:00 | 98.1 | |
| 16:00 | 94.5 | |
| 15:00 | 92.7 | |
| 14:00 | 89.1 | |
| 13:00 | 82.4 | |
| 12:00 | 74.6 | |
| 11:00 | 51.3 | |
| 10:00 | 36.9 | |
| 09:00 | 31.9 | |
| 08:00 | 35.7 | |
| 07:00 | 34.1 | |
| 06:00 | 31.6 | |
| 05:00 | 26.7 | |
| 04:00 | 19 | |
| 03:00 | 7 | |
| 02:00 | 12.8 | |
| 01:00 | 16.4 | |
| Friday, 10/2 | ||
| 00:00 | 12.2 | |
| 23:00 | 21.8 | |
| 22:00 | 25.7 | |
| 21:00 | 34.2 | |
| 20:00 | 57.6 | |
| 19:00 | 83.8 | |
| 18:00 | 91 | |
| 17:00 | 98.5 | |
| 16:00 | 94.9 | |
| 15:00 | 92.7 | |
| 14:00 | 85.6 | |
| 13:00 | 80.2 | |
| 12:00 | 62.7 | |
| 11:00 | 42.3 | |
| 10:00 | 21.3 | |
| 09:00 | 14.9 | |
| 08:00 | 18.4 | |
| 07:00 | 31.5 | |
| 06:00 | 33.8 | |
| 05:00 | 26.2 | |
| 04:00 | 21 | |
| 03:00 | 14.1 | |
| 02:00 | 5 | |
| 01:00 | 6.1 | |
| Thursday, 10/1 | ||
| 00:00 | 9.8 | |
| 23:00 | 8.8 | |
| 22:00 | 4.9 | |
| 21:00 | 5.9 | |
| 20:00 | 13.1 | |
| 19:00 | 48.7 | |
| 18:00 | 80.9 | |
| 17:00 | 85 | |
| 16:00 | 85.2 | |
| 15:00 | 81.9 | |
| 14:00 | 74.2 | |
| 13:00 | 51.9 | |
| 12:00 | 31.9 | |
| 11:00 | 24.1 | |
| 10:00 | 12.3 | |
| 09:00 | 13.5 | |
| 08:00 | 21.4 | |
| 07:00 | 28.4 | |
| 06:00 | 27.3 | |
| 05:00 | 20.2 | |
| 04:00 | 9.6 | |
| 03:00 | 6.3 | |
| 02:00 | 8.6 | |
| 01:00 | 6.3 | |
| Wednesday, 9/30 | ||
| 00:00 | 5.1 | |
| 23:00 | 5.7 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 70.2 | provisional |
| Mon, 10/5 | 65.7 | provisional |
| Sun, 10/4 | 77.5 | provisional |
| Sat, 10/3 | 87.4 | provisional |
| Fri, 10/2 | 86.2 | provisional |
| Thu, 10/1 | 67.5 | provisional |
| Wed, 9/30 | 78.8 | provisional |
| Tue, 9/29 | 64.7 | provisional |
| Mon, 9/28 | 77.8 | provisional |
| Sun, 9/27 | 69.5 | provisional |
| Sat, 9/26 | 43.2 | provisional |
| Fri, 9/25 | 43.8 | provisional |
| Thu, 9/24 | 69.4 | provisional |
| Wed, 9/23 | 58.9 | provisional |
| Tue, 9/22 | 75.8 | provisional |
| Mon, 9/21 | 86.7 | provisional |
| Sun, 9/20 | 97.2 | provisional |
| Sat, 9/19 | 110.5 | provisional |
| Fri, 9/18 | 99.7 | provisional |
| Thu, 9/17 | 95 | provisional |
| Wed, 9/16 | 87.1 | provisional |
| Tue, 9/15 | 88.9 | provisional |
| Mon, 9/14 | 104.1 | provisional |
| Sun, 9/13 | 86.7 | provisional |
| Sat, 9/12 | 58 | provisional |
| Fri, 9/11 | 101 | provisional |
| Thu, 9/10 | 114.3 | provisional |
| Wed, 9/9 | 102.7 | provisional |
| Tue, 9/8 | 114.2 | provisional |
| Mon, 9/7 | 115.7 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 35.9 | 23.4 | measured in 100 % of hours · provisional · year before: same days |
| September 2026 | 55.2 | 42.4 | measured in 100 % of hours · provisional |
| August 2026 | 82.1 | 66.6 | measured in 100 % of hours · provisional |
| July 2026 | too few readings | 76.9 | measured in 54 % of hours · provisional |
| June 2026 | 68.8 | 70.7 | measured in 100 % of hours · provisional |
| May 2026 | 55.1 | 42.1 | measured in 89 % of hours · provisional · 3 days without data from the station |
| April 2026 | 50.6 | 37.4 | measured in 93 % of hours · provisional · 1 day without data from the station |
| March 2026 | 31.7 | too few readings | measured in 100 % of hours · provisional |
| February 2026 | too few readings | 12.1 | measured in 55 % of hours · provisional |
| January 2026 | 12.4 | 6.4 | measured in 100 % of hours · provisional |
| December 2025 | 9.7 | 6.6 | measured in 100 % of hours · verified |
| November 2025 | 9.9 | 7.4 | measured in 100 % 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) | ≥ 30 | 17 | ≥ 22² |
| Annual average, µg/m³ | 49.3* | 35.3 | too few |
| Highest 8-hour average, µg/m³ | 159August 24 | 139July 5 | 143July 19 |
| Hours measured | 88 % | 93 % | 90 % |
| Days without any reading from the station | 4 | 2 | 2 |
* 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 2023
| Day | Highest 8 h | Times the limit |
|---|---|---|
| Jul 14, 2023 | 122 | 1.0 × |
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
5.3
Nowµg/m³
Measured at 20:00
3.8
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
3.5
Last 7 daysµg/m³
measured in 99 % of hours · provisional
3.9
Last 30 daysµg/m³
measured in 100 % of hours · provisional
3
Last 12 monthsµg/m³
measured in 97 % of hours · provisional
Days in 2023: SO₂, daily average above 125 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 125 | Hours above 350 | Highest day | No readings |
|---|---|---|---|---|
| January | 0 | 0 | 6 | 0 |
| February | 0 | 0 | 5 | 0 |
| March | 0 | 0 | 3 | 0 |
| April | 0 | 0 | 3 | 0 |
| May | 0 | 0 | 1 | 0 |
| June | 0 | 0 | 3 | 0 |
| July | 0 | 0 | 4 | 0 |
| August | 0 | 0 | 4 | 0 |
| September | 0 | 0 | 3 | 0 |
| October | 0 | 0 | 3 | 0 |
| November | 0 | 0 | 4 | 0 |
| December | 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 | ||
| 19:00 | 6 | |
| 18:00 | 7.2 | |
| 17:00 | 5.3 | |
| 16:00 | 4.8 | |
| 15:00 | 4.8 | |
| 14:00 | 5.3 | |
| 13:00 | 3.2 | |
| 12:00 | 3.9 | |
| 11:00 | 3.5 | |
| 10:00 | 3.2 | |
| 09:00 | 1.4 | |
| 08:00 | 1.8 | |
| 07:00 | 2.3 | |
| 06:00 | 3 | |
| 05:00 | 3.1 | |
| 04:00 | 3.3 | |
| 03:00 | 4.6 | |
| 02:00 | 3.5 | |
| 01:00 | 3.4 | |
| Tuesday, 10/6 | ||
| 00:00 | 3.3 | |
| 23:00 | 2.8 | |
| 22:00 | 4.8 | |
| 21:00 | 4.5 | |
| 20:00 | 5.1 | |
| 19:00 | 5.1 | |
| 18:00 | 5 | |
| 17:00 | 4.3 | |
| 16:00 | 3.6 | |
| 15:00 | 5 | |
| 14:00 | 5.2 | |
| 13:00 | 4.2 | |
| 12:00 | 3.3 | |
| 11:00 | 5.5 | |
| 10:00 | 4.3 | |
| 09:00 | 4.5 | |
| 08:00 | 4.6 | |
| 07:00 | 4.4 | |
| 06:00 | 4.3 | |
| 05:00 | 4.3 | |
| 04:00 | 3.8 | |
| 03:00 | 1.9 | |
| 02:00 | 4.2 | |
| 01:00 | 3.9 | |
| Monday, 10/5 | ||
| 00:00 | 3.7 | |
| 23:00 | 2.9 | |
| 22:00 | 4.9 | |
| 21:00 | 4.8 | |
| 20:00 | 3.5 | |
| 19:00 | 4.4 | |
| 18:00 | 4.3 | |
| 17:00 | 5.5 | |
| 16:00 | 4.5 | |
| 15:00 | 5.4 | |
| 14:00 | 5 | |
| 13:00 | 4.2 | |
| 12:00 | 3.9 | |
| 11:00 | 4.5 | |
| 10:00 | 3.8 | |
| 09:00 | 3.5 | |
| 08:00 | 3.9 | |
| 07:00 | 3.6 | |
| 06:00 | 3.6 | |
| 05:00 | 3 | |
| 04:00 | 2.5 | |
| 03:00 | 2.4 | |
| 02:00 | 2.2 | |
| 01:00 | 2.7 | |
| Sunday, 10/4 | ||
| 00:00 | 2.9 | |
| 23:00 | 2.7 | |
| 22:00 | 4.8 | |
| 21:00 | 3.6 | |
| 20:00 | 3.6 | |
| 19:00 | 5.5 | |
| 18:00 | 3.9 | |
| 17:00 | 3.8 | |
| 16:00 | 4.4 | |
| 15:00 | 4.3 | |
| 14:00 | 4.3 | |
| 13:00 | 3.5 | |
| 12:00 | 2.4 | |
| 11:00 | 2.8 | |
| 10:00 | 1.1 | |
| 09:00 | 1.7 | |
| 08:00 | 1 | |
| 07:00 | 2.7 | |
| 06:00 | 3 | |
| 05:00 | 3.1 | |
| 04:00 | 4.1 | |
| 03:00 | 4.5 | |
| 02:00 | 2 | |
| Saturday, 10/3 | ||
| 00:00 | 0.3 | |
| 23:00 | 3.3 | |
| 22:00 | 3.2 | |
| 21:00 | 2.8 | |
| 20:00 | 3.5 | |
| 19:00 | 4 | |
| 18:00 | 3.3 | |
| 17:00 | 2.9 | |
| 16:00 | 3.9 | |
| 15:00 | 3.8 | |
| 14:00 | 3 | |
| 13:00 | 3 | |
| 12:00 | 2.4 | |
| 11:00 | 3.9 | |
| 10:00 | 3.4 | |
| 09:00 | 3.5 | |
| 08:00 | 3.4 | |
| 07:00 | 3.6 | |
| 06:00 | 3.4 | |
| 05:00 | 2.6 | |
| 04:00 | 1.9 | |
| 03:00 | 2.3 | |
| 02:00 | 2.9 | |
| 01:00 | 3.9 | |
| Friday, 10/2 | ||
| 00:00 | 2.7 | |
| 23:00 | 3.6 | |
| 22:00 | 4.2 | |
| 21:00 | 4.2 | |
| 20:00 | 3.8 | |
| 19:00 | 2.6 | |
| 18:00 | 2.7 | |
| 17:00 | 3.7 | |
| 16:00 | 4 | |
| 15:00 | 2.5 | |
| 14:00 | 3.4 | |
| 13:00 | 2.8 | |
| 12:00 | 3.1 | |
| 11:00 | 3.1 | |
| 10:00 | 1.1 | |
| 09:00 | 2.2 | |
| 08:00 | 2 | |
| 07:00 | 2.8 | |
| 06:00 | 3.5 | |
| 05:00 | 3.4 | |
| 04:00 | 2.4 | |
| 03:00 | 2.7 | |
| 02:00 | 3.5 | |
| 01:00 | 2.8 | |
| Thursday, 10/1 | ||
| 00:00 | 3.7 | |
| 23:00 | 3.3 | |
| 22:00 | 3.5 | |
| 21:00 | 4.1 | |
| 20:00 | 4.4 | |
| 19:00 | 4.1 | |
| 18:00 | 3.2 | |
| 17:00 | 3.2 | |
| 16:00 | 3.2 | |
| 15:00 | 4.3 | |
| 14:00 | 3.4 | |
| 13:00 | 3.8 | |
| 12:00 | 3.8 | |
| 11:00 | 3.5 | |
| 10:00 | 2.5 | |
| 09:00 | 3.1 | |
| 08:00 | 4.3 | |
| 07:00 | 4 | |
| 06:00 | 2.7 | |
| 05:00 | 2.2 | |
| 04:00 | 3.5 | |
| 03:00 | 2 | |
| 02:00 | 0.6 | |
| 01:00 | 3.5 | |
| Wednesday, 9/30 | ||
| 00:00 | 2.2 | |
| 23:00 | 2.7 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 4.2 | provisional |
| Mon, 10/5 | 3.9 | provisional |
| Sun, 10/4 | 3.3 | provisional |
| Sat, 10/3 | 3.1 | provisional |
| Fri, 10/2 | 3 | provisional |
| Thu, 10/1 | 3.3 | provisional |
| Wed, 9/30 | 3.5 | provisional |
| Tue, 9/29 | 3.6 | provisional |
| Mon, 9/28 | 3.5 | provisional |
| Sun, 9/27 | 3.5 | provisional |
| Sat, 9/26 | 3.8 | provisional |
| Fri, 9/25 | 3.9 | provisional |
| Thu, 9/24 | 4.1 | provisional |
| Wed, 9/23 | 4.9 | provisional |
| Tue, 9/22 | 4.9 | provisional |
| Mon, 9/21 | 4.6 | provisional |
| Sun, 9/20 | 3.8 | provisional |
| Sat, 9/19 | 4.4 | provisional |
| Fri, 9/18 | 4 | provisional |
| Thu, 9/17 | 4.2 | provisional |
| Wed, 9/16 | 3.8 | provisional |
| Tue, 9/15 | 4.1 | provisional |
| Mon, 9/14 | 4.4 | provisional |
| Sun, 9/13 | 3.9 | provisional |
| Sat, 9/12 | 3.6 | provisional |
| Fri, 9/11 | 3.9 | provisional |
| Thu, 9/10 | 3.9 | provisional |
| Wed, 9/9 | 4.1 | provisional |
| Tue, 9/8 | 3.7 | provisional |
| Mon, 9/7 | 3.7 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 3.5 | 3.2 | measured in 99 % of hours · provisional · year before: same days |
| September 2026 | 4 | 3 | measured in 100 % of hours · provisional |
| August 2026 | 4 | 4 | measured in 99 % of hours · provisional |
| July 2026 | 3.4 | 5.3 | measured in 100 % of hours · provisional |
| June 2026 | 3.1 | 4 | measured in 99 % of hours · provisional |
| May 2026 | 2.7 | 3.3 | measured in 88 % of hours · provisional · 3 days without data from the station |
| April 2026 | 2.7 | 2.8 | measured in 92 % of hours · provisional · 1 day without data from the station |
| March 2026 | 2.5 | 4.2 | measured in 99 % of hours · provisional |
| February 2026 | 2.4 | 3.4 | measured in 99 % of hours · provisional |
| January 2026 | 2.9 | 3 | measured in 100 % of hours · provisional |
| December 2025 | 2.6 | 2.6 | measured in 99 % of hours · verified |
| November 2025 | 2.2 | 2.5 | measured in 99 % of hours · verified |
SO₂ by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days above 125 µg/m³ (allowed 3) | 0 | 0 | 0 |
| Hours above 350 µg/m³ (allowed 24) | 0 | 0 | 0 |
| Hours above 500 µg/m³, three hours in a row (alert threshold) | 0 | 0 | 0 |
| Annual average, µg/m³ | 3.1* | 3.4 | 2.2 |
| Highest daily average, µg/m³ | 9June 16 | 10July 24 | 7February 4 |
| Highest hourly value, µg/m³ | 19June 16 | 27July 24 | 32August 10 |
| Hours measured | 97 % | 98 % | 97 % |
| Days without any reading from the station | 4 | 2 | 2 |
* 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.
■ 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 0 such days.
- WHO 2021: daily 40 µg/m³, at most three to four days a year. In 2023 there were 0 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2023: 2 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.
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: 8
2 outages, 193 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Apr 29, 2026 13:00 | May 4, 2026 12:00 | 5 days |
| Oct 23, 2025 10:00 | Oct 26, 2025 11:00 | 3 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 Ministry of Environment and Physical Planning. 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.