Air at the Zagreb-3 station
Zagreb, Croatia
Network: Državna mreža za trajno praćenje kvalitete zraka · Station code: HR0009A
This year, up to yesterday (October 6)
at least
31 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: 18 days above the limit, the target value allows 25 as a three-year average.
34 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 6, 2026, O₃ 153 µg/m³ as a daily average, 1.3 times the limit.
Daily average for 245 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
Moderate
Air now · Measured at 18:00
Latest values
Latest value: 18:00
| Pollutant | Value | Level |
|---|---|---|
| PM10 | 31.8 µg/m³ | Fair |
| NO₂ | 29.2 µg/m³ | Moderate |
| O₃ | 84.5 µg/m³ | Fair |
How the air is changing
Over the last seven days there was more PM10, NO₂, and O₃ in the air than the week before.
- PM10: average 41.8 µg/m³, week before 22.6 µg/m³
- NO₂: average 41.4 µg/m³, week before 25.5 µg/m³
- O₃: average 46.4 µg/m³, week before 39.6 µg/m³
Last month there was more NO₂ and less PM10 and O₃ in the air than the month before.
- PM10: average 17.5 µg/m³, month before 19.8 µg/m³
- NO₂: average 22.3 µg/m³, month before 19.6 µg/m³
- O₃: average 50.8 µg/m³, month before 80.6 µg/m³
Show
Particulate matter PM10
31.8
Nowµg/m³
Measured at 18:00
52.8
Last 24 hoursµg/m³
measured in 83 % of hours · provisional
41.8
Last 7 daysµg/m³
measured in 100 % of hours · provisional
23.6
Last 30 daysµg/m³
measured in 97 % of hours · provisional
30.1
Last 12 monthsµg/m³
measured in 97 % of hours · provisional
Days in 2023: PM10, daily average above 50 µg/m³
25 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 (25)
- Jan 12 53
- Jan 13 72
- Jan 14 57
- Feb 1 52
- Feb 7 55
- Feb 8 53
- Feb 10 85
- Feb 11 67
- Feb 12 51
- Feb 14 56
- Feb 15 67
- Feb 16 82
- Feb 22 55
- Feb 23 80
- Dec 4 55
- Dec 7 64
- Dec 8 80
- Dec 12 66
- Dec 17 55
- Dec 18 95
- Dec 19 118
- Dec 20 102
- Dec 21 60
- Dec 23 56
- Dec 24 70
Values in µg/m³, limit 50 µg/m³.
Months of 2023
| Month | Days above 50 | Highest day | No readings |
|---|---|---|---|
| January | 3 above the number allowed | 72 | 0 |
| February | 11 above the number allowed | 85 | 0 |
| March | 0 | 42 | 0 |
| April | 0 | 27 | 0 |
| May | 0 | 18 | 0 |
| June | 0 | 29 | 0 |
| July | 0 | 21 | 0 |
| August | 0 | 27 | 0 |
| September | 0 | 26 | 0 |
| October | 0 | 36 | 0 |
| November | 0 | 49 | 0 |
| December | 11 above the number allowed | 118 | 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 | 49 | model estimate, not counted |
| 19:00 | 42 | model estimate, not counted |
| 18:00 | 31 | model estimate, not counted |
| 17:00 | 22.1 | |
| 16:00 | 24.6 | |
| 15:00 | 25.1 | |
| 14:00 | 19.1 | |
| 13:00 | 26.3 | |
| 12:00 | 25.9 | |
| 11:00 | 37.7 | |
| 10:00 | 47.4 | |
| 09:00 | 76.4 | |
| 08:00 | 71.9 | |
| 07:00 | 52.4 | |
| 06:00 | 49.8 | |
| 05:00 | 52.5 | |
| 04:00 | 58 | |
| 03:00 | 62.5 | |
| 02:00 | 72.8 | |
| 01:00 | 74.8 | |
| Tuesday, 10/6 | ||
| 00:00 | 89.5 | |
| 23:00 | 83.5 | |
| 22:00 | 83.9 | |
| 21:00 | 82.7 | |
| 20:00 | 74.7 | |
| 19:00 | 52.1 | |
| 18:00 | 45.4 | |
| 17:00 | 37.3 | |
| 16:00 | 41.5 | |
| 15:00 | 37.8 | |
| 14:00 | 37.4 | |
| 13:00 | 46.6 | |
| 12:00 | 50.1 | |
| 11:00 | 51.4 | |
| 10:00 | 80.1 | |
| 09:00 | 69.6 | |
| 08:00 | 61.8 | |
| 07:00 | 52.9 | |
| 06:00 | 37 | |
| 05:00 | 36.1 | |
| 04:00 | 39.1 | |
| 03:00 | 45.3 | |
| 02:00 | 48.1 | |
| 01:00 | 59.5 | |
| Monday, 10/5 | ||
| 00:00 | 66.7 | |
| 23:00 | 71.9 | |
| 22:00 | 67.1 | |
| 21:00 | 75.7 | |
| 20:00 | 66.5 | |
| 19:00 | 50.4 | |
| 18:00 | 43 | |
| 17:00 | 37.9 | |
| 16:00 | 38.9 | |
| 15:00 | 39.3 | |
| 14:00 | 38.1 | |
| 13:00 | 45.4 | |
| 12:00 | 82.5 | |
| 11:00 | 90.4 | |
| 10:00 | 81.3 | |
| 09:00 | 69.2 | |
| 08:00 | 48.6 | |
| 07:00 | 34.9 | |
| 06:00 | 29.5 | |
| 05:00 | 30.1 | |
| 04:00 | 31.1 | |
| 03:00 | 34.4 | |
| 02:00 | 38.5 | |
| 01:00 | 46.9 | |
| Sunday, 10/4 | ||
| 00:00 | 54.2 | |
| 23:00 | 52.6 | |
| 22:00 | 52.3 | |
| 21:00 | 58.3 | |
| 20:00 | 49.4 | |
| 19:00 | 30.9 | |
| 18:00 | 24.9 | |
| 17:00 | 23.4 | |
| 16:00 | 21.9 | |
| 15:00 | 22.5 | |
| 14:00 | 27.4 | |
| 13:00 | 27.3 | |
| 12:00 | 29.3 | |
| 11:00 | 30.9 | |
| 10:00 | 40 | |
| 09:00 | 39.5 | |
| 08:00 | 34.7 | |
| 07:00 | 31.8 | |
| 06:00 | 37.8 | |
| 05:00 | 43.6 | |
| 04:00 | 49.2 | |
| 03:00 | 50.5 | |
| 02:00 | 47.3 | |
| 01:00 | 66 | |
| Saturday, 10/3 | ||
| 00:00 | 71.4 | |
| 23:00 | 78.6 | |
| 22:00 | 57 | |
| 21:00 | 53.3 | |
| 20:00 | 49.7 | |
| 19:00 | 39.6 | |
| 18:00 | 26.7 | |
| 17:00 | 20.7 | |
| 16:00 | 20 | |
| 15:00 | 26 | |
| 14:00 | 28.2 | |
| 13:00 | 35 | |
| 12:00 | 36.9 | |
| 11:00 | 35.2 | |
| 10:00 | 48.1 | |
| 09:00 | 48 | |
| 08:00 | 35.8 | |
| 07:00 | 31 | |
| 06:00 | 31 | |
| 05:00 | 29.3 | |
| 04:00 | 33.7 | |
| 03:00 | 35.7 | |
| 02:00 | 42.1 | |
| 01:00 | 51.2 | |
| Friday, 10/2 | ||
| 00:00 | 61.3 | |
| 23:00 | 63.5 | |
| 22:00 | 34.1 | |
| 21:00 | 46.2 | |
| 20:00 | 56.1 | |
| 19:00 | 55.7 | |
| 18:00 | 28.1 | |
| 17:00 | 24.1 | |
| 16:00 | 23.3 | |
| 15:00 | 28.3 | |
| 14:00 | 30.5 | |
| 13:00 | 36.6 | |
| 12:00 | 39.5 | |
| 11:00 | 43.4 | |
| 10:00 | 56.3 | |
| 09:00 | 52.2 | |
| 08:00 | 32.9 | |
| 07:00 | 29.4 | |
| 06:00 | 27.5 | |
| 05:00 | 25.3 | |
| 04:00 | 28.1 | |
| 03:00 | 32.9 | |
| 02:00 | 38.8 | |
| 01:00 | 45.3 | |
| Thursday, 10/1 | ||
| 00:00 | 40.2 | |
| 23:00 | 36.1 | |
| 22:00 | 35.8 | |
| 21:00 | 35.7 | |
| 20:00 | 43.1 | |
| 19:00 | 51.5 | |
| 18:00 | 27.3 | |
| 17:00 | 18.9 | |
| 16:00 | 20.5 | |
| 15:00 | 22 | |
| 14:00 | 22.2 | |
| 13:00 | 24.7 | |
| 12:00 | 37.6 | |
| 11:00 | 36.1 | |
| 10:00 | 41.2 | |
| 09:00 | 44 | |
| 08:00 | 35.6 | |
| 07:00 | 31 | |
| 06:00 | 27.4 | |
| 05:00 | 27.1 | |
| 04:00 | 29.5 | |
| 03:00 | 32.8 | |
| 02:00 | 33 | |
| 01:00 | 37.4 | |
| Wednesday, 9/30 | ||
| 00:00 | 41.3 | |
| 23:00 | 40 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 56 | above the limit · provisional |
| Mon, 10/5 | 52.4 | above the limit · provisional |
| Sun, 10/4 | 39.4 | provisional |
| Sat, 10/3 | 40.2 | provisional |
| Fri, 10/2 | 39.1 | provisional |
| Thu, 10/1 | 32.9 | provisional |
| Wed, 9/30 | 32.2 | provisional |
| Tue, 9/29 | 33.5 | provisional |
| Mon, 9/28 | 34.4 | provisional |
| Sun, 9/27 | 26.1 | provisional |
| Sat, 9/26 | 16.7 | provisional |
| Fri, 9/25 | 13.5 | provisional |
| Thu, 9/24 | 19.1 | provisional |
| Wed, 9/23 | 15.2 | provisional |
| Tue, 9/22 | 14.6 | provisional |
| Mon, 9/21 | 17.1 | provisional |
| Sun, 9/20 | 16.3 | provisional |
| Sat, 9/19 | 14.2 | provisional |
| Fri, 9/18 | 16 | provisional |
| Thu, 9/17 | 14.6 | provisional |
| Wed, 9/16 | 17.8 | provisional |
| Tue, 9/15 | 12.6 | provisional |
| Mon, 9/14 | 15.1 | provisional |
| Sun, 9/13 | 13 | provisional |
| Sat, 9/12 | 10.8 | provisional |
| Fri, 9/11 | 7.3 | provisional |
| Thu, 9/10 | 10.4 | provisional |
| Wed, 9/9 | 29.8 | provisional |
| Tue, 9/8 | 29.6 | provisional |
| Mon, 9/7 | too few readings |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 43.3 | 35.2 | measured in 100 % of hours · provisional · year before: same days |
| September 2026 | 17.5 | 33.4 | measured in 97 % of hours · provisional |
| August 2026 | 19.8 | 48.6 | measured in 100 % of hours · provisional |
| July 2026 | 19.8 | 30.7 | measured in 95 % of hours · provisional |
| June 2026 | 19.5 | 31.8 | measured in 94 % of hours · provisional |
| May 2026 | 15.1 | 28.5 | measured in 95 % of hours · provisional |
| April 2026 | 21.5 | 38.6 | measured in 99 % of hours · provisional |
| March 2026 | 34.6 | 53.7 | measured in 100 % of hours · provisional |
| February 2026 | 43 | 77.9 | measured in 95 % of hours · provisional |
| January 2026 | 47.1 | 29.8 | measured in 97 % of hours · provisional |
| December 2025 | 45.3 | 48.5 | measured in 98 % of hours · verified |
| November 2025 | 37.5 | 39.7 | 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) | 34 | 100 above the number allowed | 48 above the number allowed |
| Annual average, µg/m³ (EU limit 40) | 26.7* | 41.1 above the number allowed | 27.6 |
| Highest daily average, µg/m³ | 121January 24 | 164February 18 | 125December 30 |
| Highest hourly value, µg/m³ | 189March 9 | 496July 2 | 184April 1 |
| Hours measured | 97 % | 96 % | 97 % |
| Days without any reading from the station | 0 | 3 | 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.
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 30 such days.
- WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2023 there were 30 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 19, 2023 | 118 | 2.4 × |
| Dec 20, 2023 | 102 | 2.0 × |
| Dec 18, 2023 | 95 | 1.9 × |
| Feb 10, 2023 | 85 | 1.7 × |
| Feb 16, 2023 | 82 | 1.6 × |
Daily average in µg/m³, daily limit 50 µg/m³. Days with the same unverified value over many hours are not on this list.
Nitrogen dioxide NO₂
29.2
Nowµg/m³
Measured at 18:00
42.5
Last 24 hoursµg/m³
measured in 83 % of hours · provisional
41.4
Last 7 daysµg/m³
measured in 100 % of hours · provisional
27.4
Last 30 daysµg/m³
measured in 100 % of hours · provisional
23.2
Last 12 monthsµg/m³
measured in 96 % 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 | 46 | 0 |
| February | 0 | 0 | 67 | 0 |
| March | 0 | 0 | 42 | 0 |
| April | 0 | 0 | 38 | 0 |
| May | 0 | 0 | 34 | 0 |
| June | 0 | 0 | 32 | 0 |
| July | 0 | 0 | 35 | 0 |
| August | 0 | 0 | 39 | 0 |
| September | 0 | 0 | 50 | 0 |
| October | 0 | 0 | 40 | 0 |
| November | 0 | 0 | 48 | 0 |
| December | 0 | 0 | 61 | 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 | 28 | model estimate, not counted |
| 19:00 | 26 | model estimate, not counted |
| 18:00 | 20 | model estimate, not counted |
| 17:00 | 22.4 | |
| 16:00 | 16.1 | |
| 15:00 | 16.7 | |
| 14:00 | 13.8 | |
| 13:00 | 12.2 | |
| 12:00 | 14.4 | |
| 11:00 | 22.4 | |
| 10:00 | 39.4 | |
| 09:00 | 49 | |
| 08:00 | 55.1 | |
| 07:00 | 42.3 | |
| 06:00 | 29.5 | |
| 05:00 | 40.6 | |
| 04:00 | 44.9 | |
| 03:00 | 49.8 | |
| 02:00 | 61.5 | |
| 01:00 | 77 | |
| Tuesday, 10/6 | ||
| 00:00 | 79.4 | |
| 23:00 | 76.1 | |
| 22:00 | 87.5 | |
| 21:00 | 97.3 | |
| 20:00 | 107.7 | |
| 19:00 | 49.6 | |
| 18:00 | 32.1 | |
| 17:00 | 22.2 | |
| 16:00 | 23.1 | |
| 15:00 | 19.6 | |
| 14:00 | 21.6 | |
| 13:00 | 32.7 | |
| 12:00 | 38.9 | |
| 11:00 | 42.4 | |
| 10:00 | 51.1 | |
| 09:00 | 64.1 | |
| 08:00 | 44.4 | |
| 07:00 | 33.5 | |
| 06:00 | 25 | |
| 05:00 | 21.6 | |
| 04:00 | 25 | |
| 03:00 | 32.9 | |
| 02:00 | 40.9 | |
| 01:00 | 58.9 | |
| Monday, 10/5 | ||
| 00:00 | 71.1 | |
| 23:00 | 87.9 | |
| 22:00 | 98 | |
| 21:00 | 100.2 | |
| 20:00 | 101.7 | |
| 19:00 | 64.9 | |
| 18:00 | 31.4 | |
| 17:00 | 25 | |
| 16:00 | 28.6 | |
| 15:00 | 29 | |
| 14:00 | 31.1 | |
| 13:00 | 38.2 | |
| 12:00 | 56.9 | |
| 11:00 | 65.2 | |
| 10:00 | 62.4 | |
| 09:00 | 50 | |
| 08:00 | 36.4 | |
| 07:00 | 31.9 | |
| 06:00 | 28.4 | |
| 05:00 | 27.7 | |
| 04:00 | 28.5 | |
| 03:00 | 34.8 | |
| 02:00 | 53.2 | |
| 01:00 | 68.6 | |
| Sunday, 10/4 | ||
| 00:00 | 81 | |
| 23:00 | 88.5 | |
| 22:00 | 77.5 | |
| 21:00 | 64.2 | |
| 20:00 | 79.3 | |
| 19:00 | 30.8 | |
| 18:00 | 19.7 | |
| 17:00 | 13.6 | |
| 16:00 | 8.3 | |
| 15:00 | 11.7 | |
| 14:00 | 11.4 | |
| 13:00 | 12.9 | |
| 12:00 | 16.8 | |
| 11:00 | 20.5 | |
| 10:00 | 33.2 | |
| 09:00 | 31.1 | |
| 08:00 | 32.7 | |
| 07:00 | 31.4 | |
| 06:00 | 33 | |
| 05:00 | 36.7 | |
| 04:00 | 36.7 | |
| 03:00 | 43 | |
| 02:00 | 55.2 | |
| 01:00 | 61.8 | |
| Saturday, 10/3 | ||
| 00:00 | 68.4 | |
| 23:00 | 75.5 | |
| 22:00 | 86.2 | |
| 21:00 | 92.8 | |
| 20:00 | 70.9 | |
| 19:00 | 40.2 | |
| 18:00 | 14.2 | |
| 17:00 | 10.3 | |
| 16:00 | 6.8 | |
| 15:00 | 10.7 | |
| 14:00 | 14.2 | |
| 13:00 | 16.6 | |
| 12:00 | 21.7 | |
| 11:00 | 31 | |
| 10:00 | 47 | |
| 09:00 | 44.2 | |
| 08:00 | 41.9 | |
| 07:00 | 37.7 | |
| 06:00 | 35 | |
| 05:00 | 32.9 | |
| 04:00 | 39.2 | |
| 03:00 | 44.4 | |
| 02:00 | 49.7 | |
| 01:00 | 56.5 | |
| Friday, 10/2 | ||
| 00:00 | 63.5 | |
| 23:00 | 71.8 | |
| 22:00 | 47.1 | |
| 21:00 | 55.4 | |
| 20:00 | 78.2 | |
| 19:00 | 59.3 | |
| 18:00 | 25 | |
| 17:00 | 14.7 | |
| 16:00 | 14.8 | |
| 15:00 | 11.3 | |
| 14:00 | 10.7 | |
| 13:00 | 14.8 | |
| 12:00 | 30.5 | |
| 11:00 | 34.3 | |
| 10:00 | 47.8 | |
| 09:00 | 50.5 | |
| 08:00 | 52.6 | |
| 07:00 | 40.8 | |
| 06:00 | 36.6 | |
| 05:00 | 28.4 | |
| 04:00 | 37.1 | |
| 03:00 | 42.7 | |
| 02:00 | 46.6 | |
| 01:00 | 55.2 | |
| Thursday, 10/1 | ||
| 00:00 | 57.8 | |
| 23:00 | 49.4 | |
| 22:00 | 47.9 | |
| 21:00 | 42.6 | |
| 20:00 | 43.4 | |
| 19:00 | 36.8 | |
| 18:00 | 13.4 | |
| 17:00 | 8.9 | |
| 16:00 | 6.7 | |
| 15:00 | 12.2 | |
| 14:00 | 11.5 | |
| 13:00 | 14.3 | |
| 12:00 | 17.3 | |
| 11:00 | 25.8 | |
| 10:00 | 45 | |
| 09:00 | 48 | |
| 08:00 | 41.6 | |
| 07:00 | 32 | |
| 06:00 | 31.7 | |
| 05:00 | 29.4 | |
| 04:00 | 33.5 | |
| 03:00 | 42.2 | |
| 02:00 | 51.2 | |
| 01:00 | 62.7 | |
| Wednesday, 9/30 | ||
| 00:00 | 64.8 | |
| 23:00 | 56.5 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 47 | provisional |
| Mon, 10/5 | 52.1 | provisional |
| Sun, 10/4 | 38.8 | provisional |
| Sat, 10/3 | 41.2 | provisional |
| Fri, 10/2 | 40.4 | provisional |
| Thu, 10/1 | 33.6 | provisional |
| Wed, 9/30 | 36.8 | provisional |
| Tue, 9/29 | 35.2 | provisional |
| Mon, 9/28 | 35.5 | provisional |
| Sun, 9/27 | 20.7 | provisional |
| Sat, 9/26 | 19.7 | provisional |
| Fri, 9/25 | 17.3 | provisional |
| Thu, 9/24 | 27 | provisional |
| Wed, 9/23 | 22.8 | provisional |
| Tue, 9/22 | 20 | provisional |
| Mon, 9/21 | 22.1 | provisional |
| Sun, 9/20 | 21.3 | provisional |
| Sat, 9/19 | 20.7 | provisional |
| Fri, 9/18 | 22.6 | provisional |
| Thu, 9/17 | 28.9 | provisional |
| Wed, 9/16 | 25 | provisional |
| Tue, 9/15 | 22 | provisional |
| Mon, 9/14 | 27.5 | provisional |
| Sun, 9/13 | 17.9 | provisional |
| Sat, 9/12 | 16.3 | provisional |
| Fri, 9/11 | 15.1 | provisional |
| Thu, 9/10 | 14.6 | provisional |
| Wed, 9/9 | 34.1 | provisional |
| Tue, 9/8 | 29.6 | provisional |
| Mon, 9/7 | 15.3 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 42.2 | 18.7 | measured in 100 % of hours · provisional · year before: same days |
| September 2026 | 22.3 | 19.9 | measured in 100 % of hours · provisional |
| August 2026 | 19.6 | 18.2 | measured in 91 % of hours · provisional |
| July 2026 | 18.4 | 19 | measured in 100 % of hours · provisional |
| June 2026 | 18 | 20 | measured in 96 % of hours · provisional |
| May 2026 | 18.2 | 19.9 | measured in 99 % of hours · provisional |
| April 2026 | 19.4 | 23.9 | measured in 100 % of hours · provisional |
| March 2026 | 21.8 | too few readings | measured in 77 % of hours · provisional |
| February 2026 | 30.1 | 32.6 | measured in 100 % of hours · provisional |
| January 2026 | 31 | 24.9 | measured in 100 % of hours · provisional |
| December 2025 | 25.3 | 31.5 | measured in 100 % of hours · verified |
| November 2025 | 24.2 | 28 | 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) | 0 | 0 | 0 |
| Hours above 400 µg/m³, three hours in a row (alert threshold) | 0 | 0 | 0 |
| Annual average, µg/m³ (EU limit 40) | 22.5* | 23.6 | 28.4 |
| Highest daily average, µg/m³ | 64January 9 | 62March 8 | 70January 22 |
| Highest hourly value, µg/m³ | 108October 6 | 129March 8 | 122January 22 |
| Hours measured | 96 % | 93 % | 96 % |
| Days without any reading from the station | 0 | 3 | 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.
■ 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 205 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2023: 28 µg/m³.
- WHO 2021: annual average 10 µg/m³. Average in 2023: 28 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
84.5
Nowµg/m³
Measured at 18:00
36
Last 24 hoursµg/m³
measured in 83 % of hours · provisional
46.4
Last 7 daysµg/m³
measured in 92 % of hours · provisional
44.4
Last 30 daysµg/m³
measured in 98 % of hours · provisional
48.2
Last 12 monthsµg/m³
measured in 92 % 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)
- Jun 21 134
Values in µg/m³, limit 120 µg/m³.
Months of 2023
| Month | Days above 120 | Highest 8 h | No readings |
|---|---|---|---|
| January | 0 | 61 | 0 |
| February | 0 | 81 | 0 |
| March | 0 | 97 | 0 |
| April | 0 | 97 | 0 |
| May | 0 | 107 | 0 |
| June | 1 above the number allowed | 134 | 0 |
| July | 0 | 109 | 0 |
| August | 0 | 109 | 0 |
| September | 0 | 101 | 0 |
| October | 0 | 71 | 0 |
| November | 0 | 62 | 0 |
| December | 0 | 59 | 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 | 40 | model estimate, not counted |
| 19:00 | 41 | model estimate, not counted |
| 18:00 | 63 | model estimate, not counted |
| 17:00 | 93.3 | |
| 16:00 | 99.8 | |
| 15:00 | 95.9 | |
| 14:00 | 96.8 | |
| 13:00 | 96.8 | |
| 12:00 | 83.6 | |
| 11:00 | 52.4 | |
| 10:00 | 29.2 | |
| 09:00 | 7.7 | |
| 08:00 | 2.4 | |
| 07:00 | 6.3 | |
| 06:00 | 18.5 | |
| 05:00 | 6.8 | |
| 04:00 | 3.2 | |
| 03:00 | 3.1 | |
| 02:00 | 2.8 | |
| 01:00 | 3.2 | |
| Tuesday, 10/6 | ||
| 00:00 | 4.1 | |
| 23:00 | 5.6 | |
| 22:00 | 8 | |
| 21:00 | 9.5 | |
| 20:00 | 16.4 | |
| 19:00 | 76.4 | |
| 18:00 | 106.7 | |
| 17:00 | 121.4 | |
| 16:00 | 120.1 | |
| 15:00 | 117.1 | |
| 14:00 | 102 | |
| 13:00 | 78.7 | |
| 12:00 | 57.1 | |
| Monday, 10/5 | ||
| 21:00 | 11.7 | |
| 20:00 | 15.3 | |
| 19:00 | 53.8 | |
| 18:00 | 93.6 | |
| 17:00 | 100.8 | |
| 16:00 | 94.6 | |
| 15:00 | 91.3 | |
| 14:00 | 86.8 | |
| 13:00 | 75.1 | |
| 12:00 | 39.4 | |
| 11:00 | 19.7 | |
| 10:00 | 13.7 | |
| 09:00 | 11.7 | |
| 08:00 | 9.6 | |
| 07:00 | 11.2 | |
| 06:00 | 18.3 | |
| 05:00 | 23.6 | |
| 04:00 | 21.2 | |
| 03:00 | 18.8 | |
| 02:00 | 10.2 | |
| 01:00 | 8.9 | |
| Sunday, 10/4 | ||
| 00:00 | 9.7 | |
| 23:00 | 9.8 | |
| 22:00 | 18.5 | |
| 21:00 | 37.9 | |
| 20:00 | 30.2 | |
| 19:00 | 89.1 | |
| 18:00 | 114.2 | |
| 17:00 | 129.9 | |
| 16:00 | 130.2 | |
| 15:00 | 132.3 | |
| 14:00 | 122.3 | |
| 13:00 | 112 | |
| 12:00 | 91.5 | |
| 11:00 | 68.3 | |
| 10:00 | 31.3 | |
| 09:00 | 23.7 | |
| 08:00 | 21.5 | |
| 07:00 | 17.6 | |
| 06:00 | 11.5 | |
| 05:00 | 12.2 | |
| 04:00 | 13.3 | |
| 03:00 | 11.7 | |
| 02:00 | 10.7 | |
| 01:00 | 9.7 | |
| Saturday, 10/3 | ||
| 00:00 | 9.5 | |
| 23:00 | 10.9 | |
| 22:00 | 10.1 | |
| 21:00 | 13.1 | |
| 20:00 | 35.6 | |
| 19:00 | 75.7 | |
| 18:00 | 115.2 | |
| 17:00 | 119.4 | |
| 16:00 | 122.2 | |
| 15:00 | 124 | |
| 14:00 | 117.2 | |
| 13:00 | 107.1 | |
| 12:00 | 93 | |
| 11:00 | 69.6 | |
| 10:00 | 28.6 | |
| 09:00 | 12.6 | |
| 08:00 | 8.6 | |
| 07:00 | 8.2 | |
| 06:00 | 9.6 | |
| 05:00 | 11.6 | |
| 04:00 | 7.3 | |
| 03:00 | 7.4 | |
| 02:00 | 7.2 | |
| 01:00 | 7.3 | |
| Friday, 10/2 | ||
| 00:00 | 7.5 | |
| 23:00 | 11.3 | |
| 22:00 | 44.9 | |
| 21:00 | 37.4 | |
| 20:00 | 23.8 | |
| 19:00 | 43.1 | |
| 18:00 | 86.2 | |
| 17:00 | 108.4 | |
| 16:00 | 111.2 | |
| 15:00 | 107.7 | |
| 14:00 | 106 | |
| 13:00 | 97.6 | |
| 12:00 | 76.8 | |
| 11:00 | 57.8 | |
| 10:00 | 22.7 | |
| 09:00 | 10.1 | |
| 08:00 | 7.9 | |
| 07:00 | 7.7 | |
| 06:00 | 10.3 | |
| 05:00 | 18 | |
| 04:00 | 11.1 | |
| 03:00 | 7.4 | |
| 02:00 | 7.2 | |
| 01:00 | 7.8 | |
| Thursday, 10/1 | ||
| 00:00 | 17.1 | |
| 23:00 | 34 | |
| 22:00 | 35.2 | |
| 21:00 | 41.6 | |
| 20:00 | 47.8 | |
| 19:00 | 65 | |
| 18:00 | 100.2 | |
| 17:00 | 107.7 | |
| 16:00 | 109.6 | |
| 15:00 | 105.5 | |
| 14:00 | 98.9 | |
| 13:00 | 90.3 | |
| 12:00 | 77.2 | |
| 11:00 | 59.2 | |
| 10:00 | 33.5 | |
| 09:00 | 8.9 | |
| 08:00 | 6.8 | |
| 07:00 | 6.4 | |
| 06:00 | 6 | |
| 05:00 | 6.5 | |
| 04:00 | 6.8 | |
| 03:00 | 6.8 | |
| 02:00 | 10 | |
| 01:00 | 6.3 | |
| Wednesday, 9/30 | ||
| 00:00 | 6.4 | |
| 23:00 | 19.8 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | too few readings | |
| Mon, 10/5 | 79.4 | provisional |
| Sun, 10/4 | 115.2 | provisional |
| Sat, 10/3 | 109.2 | provisional |
| Fri, 10/2 | 94 | provisional |
| Thu, 10/1 | 94.3 | provisional |
| Wed, 9/30 | 96.9 | provisional |
| Tue, 9/29 | 99.4 | provisional |
| Mon, 9/28 | 107.7 | provisional |
| Sun, 9/27 | 100.7 | provisional |
| Sat, 9/26 | 92.9 | provisional |
| Fri, 9/25 | 73 | provisional |
| Thu, 9/24 | 52.3 | provisional |
| Wed, 9/23 | 73.7 | provisional |
| Tue, 9/22 | 72.9 | provisional |
| Mon, 9/21 | 71.1 | provisional |
| Sun, 9/20 | 88.6 | provisional |
| Sat, 9/19 | 94.1 | provisional |
| Fri, 9/18 | 60.1 | provisional |
| Thu, 9/17 | 49.1 | provisional |
| Wed, 9/16 | 95.6 | provisional |
| Tue, 9/15 | 84.4 | provisional |
| Mon, 9/14 | 72.5 | provisional |
| Sun, 9/13 | 98.7 | provisional |
| Sat, 9/12 | 82.8 | provisional |
| Fri, 9/11 | 47.7 | provisional |
| Thu, 9/10 | 54 | provisional |
| Wed, 9/9 | 99 | provisional |
| Tue, 9/8 | 130.1 | above the limit · provisional |
| Mon, 9/7 | 117.2 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 47.4 | 39 | measured in 90 % of hours · provisional · year before: same days |
| September 2026 | 50.8 | 32.3 | measured in 100 % of hours · provisional |
| August 2026 | 80.6 | 59.3 | measured in 93 % of hours · provisional |
| July 2026 | 72 | 62.2 | measured in 100 % of hours · provisional |
| June 2026 | 62.1 | 73.8 | measured in 96 % of hours · provisional |
| May 2026 | 67.8 | 55.7 | measured in 99 % of hours · provisional |
| April 2026 | 63.9 | 54.4 | measured in 94 % of hours · provisional |
| March 2026 | 56.7 | 47.4 | measured in 85 % of hours · provisional |
| February 2026 | too few readings | 33.4 | measured in 49 % of hours · provisional |
| January 2026 | 28.4 | 35.5 | measured in 100 % of hours · provisional |
| December 2025 | 9.8 | 22.3 | measured in 100 % of hours · verified |
| November 2025 | 25.3 | 21.6 | 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) | ≥ 31 | 18 | 6 |
| Annual average, µg/m³ | 57.9* | 42.5 | 38.9 |
| Highest 8-hour average, µg/m³ | 153August 6 | 149July 3 | 128July 15 |
| Hours measured | 91 % | 96 % | 96 % |
| Days without any reading from the station | 0 | 3 | 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.
■ 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 |
|---|---|---|
| Jun 21, 2023 | 134 | 1.1 × |
Daily average in µg/m³, daily limit 120 µg/m³. Days with the same unverified value over many hours are not on this list.
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: 4
2 outages, 85 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Jun 4, 2026 09:00 | Jun 5, 2026 11:00 | 26 hours |
| Oct 25, 2025 00:00 | Oct 27, 2025 10:00 | 2 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 Državna mreža za trajno praćenje kvalitete zraka. 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.