Air at the Pula Fižela station
Pula, Croatia
Network: Državna mreža za trajno praćenje kvalitete zraka · Station code: HR0034A
This year, up to yesterday (October 6)
77 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: 41 days above the limit, the target value allows 25 as a three-year average.
Worst day: August 1, 2026, O₃ 158 µg/m³ as a daily average, 1.3 times the limit.
Daily average for 261 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
Moderate
Air now · Measured at 16:00
Latest values
Latest value: 16:00
| Pollutant | Value | Level |
|---|---|---|
| NO₂ | 2.9 µg/m³ | Good |
| O₃ | 109.1 µg/m³ | Moderate |
How the air is changing
Over the last seven days there was more NO₂ and O₃ in the air than the week before.
- NO₂: average 23 µg/m³, week before 20.5 µg/m³
- O₃: average 77.5 µg/m³, week before 64.2 µg/m³
Last month there was more NO₂ and less O₃ in the air than the month before.
- NO₂: average 15.5 µg/m³, month before 14.1 µg/m³
- O₃: average 71.5 µg/m³, month before 89.4 µg/m³
Show
Nitrogen dioxide NO₂
2.9
Nowµg/m³
Measured at 16:00
25
Last 24 hoursµg/m³
measured in 83 % of hours · provisional
23
Last 7 daysµg/m³
measured in 95 % of hours · provisional
17.3
Last 30 daysµg/m³
measured in 99 % of hours · provisional
13.7
Last 12 monthsµg/m³
measured in 97 % of hours · provisional
Days in 2026: NO₂, at least one hour above 200 µg/m³
No measured day above the limit. 8 days without any reading from the station.
- above the limit
- below the limit
- too few readings for the day
- no data from the station
Months of 2026
| Month | Days with an hour above 200 | Hours above 200 | Highest day | No readings |
|---|---|---|---|---|
| January | 0 | 0 | 44 | 0 |
| February | 0 | 0 | 23 | 0 |
| March | 0 | 0 | 24 | 0 |
| April | 0 | 0 | 37 | 0 |
| May | 0 | 0 | 22 | 0 |
| June | 0 | 0 | 15 | 0 |
| July | 0 | 0 | 24 | 8 |
| August | 0 | 0 | 32 | 0 |
| September | 0 | 0 | 31 | 0 |
| October up to yesterday | 0 | 0 | 36 | 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 | ||
| 18:00 | 8 | model estimate, not counted |
| 17:00 | 8 | model estimate, not counted |
| 16:00 | 8 | model estimate, not counted |
| 15:00 | 1.5 | |
| 14:00 | 2.3 | |
| 13:00 | 2.2 | |
| 12:00 | 1.5 | |
| 11:00 | 4.6 | |
| 10:00 | 5.6 | |
| 09:00 | 18.4 | |
| 08:00 | 11.9 | |
| 07:00 | 5.9 | |
| 06:00 | 26.6 | |
| 05:00 | 58.9 | |
| 04:00 | 69.4 | |
| 03:00 | 51.6 | |
| 02:00 | 17.8 | |
| 01:00 | 26.8 | |
| Tuesday, 10/6 | ||
| 00:00 | 34.2 | |
| 23:00 | 62.8 | |
| 22:00 | 28.1 | |
| 21:00 | 57.6 | |
| 20:00 | 12.8 | |
| 19:00 | 8.2 | |
| 18:00 | 5.7 | |
| 17:00 | 8.3 | |
| 16:00 | 5.2 | |
| 15:00 | 6.2 | |
| 14:00 | 13.9 | |
| 13:00 | 12 | |
| 12:00 | 9.2 | |
| 11:00 | 12.3 | |
| 10:00 | 35.7 | |
| 09:00 | 59.5 | |
| 08:00 | 59.7 | |
| 07:00 | 41 | |
| 06:00 | 28.5 | |
| 05:00 | 16.9 | |
| 04:00 | 44.6 | |
| 03:00 | 19.7 | |
| 02:00 | 30 | |
| 01:00 | 32.9 | |
| Monday, 10/5 | ||
| 00:00 | 41.8 | |
| 23:00 | 19 | |
| 22:00 | 7.3 | |
| 21:00 | 6.1 | |
| 20:00 | 9.5 | |
| 19:00 | 9.6 | |
| 18:00 | 6.2 | |
| 17:00 | 3.5 | |
| 16:00 | 4 | |
| 15:00 | 3 | |
| 14:00 | 3.2 | |
| 13:00 | 5.8 | |
| 12:00 | 8.3 | |
| 02:00 | 33.9 | |
| 01:00 | 49.2 | |
| Sunday, 10/4 | ||
| 00:00 | 30.4 | |
| 23:00 | 4.7 | |
| 22:00 | 5.1 | |
| 21:00 | 5.8 | |
| 20:00 | 5.2 | |
| 19:00 | 4.1 | |
| 18:00 | 2.7 | |
| 17:00 | 1.9 | |
| 16:00 | 1.6 | |
| 15:00 | 1.5 | |
| 14:00 | 1.9 | |
| 13:00 | 2.1 | |
| 12:00 | 6.3 | |
| 11:00 | 10.4 | |
| 10:00 | 50.3 | |
| 09:00 | 66.7 | |
| 08:00 | 59.6 | |
| 07:00 | 30.8 | |
| 06:00 | 23.4 | |
| 05:00 | 12.2 | |
| 04:00 | 9.2 | |
| 03:00 | 19.5 | |
| 02:00 | 8.7 | |
| 01:00 | 21.5 | |
| Saturday, 10/3 | ||
| 00:00 | 28.7 | |
| 23:00 | 6.2 | |
| 22:00 | 4.9 | |
| 21:00 | 4.8 | |
| 20:00 | 3.8 | |
| 19:00 | 2.7 | |
| 18:00 | 1.9 | |
| 17:00 | 1.5 | |
| 16:00 | 1.5 | |
| 15:00 | 1.7 | |
| 14:00 | 2.1 | |
| 13:00 | 2.7 | |
| 12:00 | 3.6 | |
| 11:00 | 24.4 | |
| 10:00 | 48.5 | |
| 09:00 | 74.4 | |
| 08:00 | 55 | |
| 07:00 | 30.7 | |
| 06:00 | 37.2 | |
| 05:00 | 60.1 | |
| 04:00 | 52.3 | |
| 03:00 | 72.9 | |
| 02:00 | 68.3 | |
| 01:00 | 83.3 | |
| Friday, 10/2 | ||
| 00:00 | 50.6 | |
| 23:00 | 20.2 | |
| 22:00 | 33.7 | |
| 21:00 | 15.1 | |
| 20:00 | 10.6 | |
| 19:00 | 3.3 | |
| 18:00 | 3.1 | |
| 17:00 | 3.3 | |
| 16:00 | 3.8 | |
| 15:00 | 9 | |
| 14:00 | 3.9 | |
| 13:00 | 6.2 | |
| 12:00 | 16.9 | |
| 11:00 | 55 | |
| 10:00 | 71.6 | |
| 09:00 | 64.6 | |
| 08:00 | 54.2 | |
| 07:00 | 68 | |
| 06:00 | 71.1 | |
| 05:00 | 65.9 | |
| 04:00 | 60.5 | |
| 03:00 | 63.5 | |
| 02:00 | 58.8 | |
| 01:00 | 50.5 | |
| Thursday, 10/1 | ||
| 00:00 | 44.8 | |
| 23:00 | 36.4 | |
| 22:00 | 28 | |
| 21:00 | 21.1 | |
| 20:00 | 8 | |
| 19:00 | 2.8 | |
| 18:00 | 2.8 | |
| 17:00 | 2.2 | |
| 16:00 | 10.6 | |
| 15:00 | 21.7 | |
| 14:00 | 4.1 | |
| 13:00 | 8 | |
| 12:00 | 10.2 | |
| 11:00 | 35.8 | |
| 10:00 | 62.3 | |
| 09:00 | 64 | |
| 08:00 | 51.9 | |
| 07:00 | 34.5 | |
| 06:00 | 21.2 | |
| 05:00 | 8.5 | |
| 04:00 | 7.7 | |
| 03:00 | 13.4 | |
| 02:00 | 9.7 | |
| 01:00 | 8.7 | |
| Wednesday, 9/30 | ||
| 00:00 | 4.9 | |
| 23:00 | 7.2 | |
| 22:00 | 4.8 | |
| 21:00 | 4.2 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 26.9 | provisional |
| Mon, 10/5 | too few readings | |
| Sun, 10/4 | 16.1 | provisional |
| Sat, 10/3 | 28.1 | provisional |
| Fri, 10/2 | 36 | provisional |
| Thu, 10/1 | 21.6 | provisional |
| Wed, 9/30 | 15 | provisional |
| Tue, 9/29 | 27.6 | provisional |
| Mon, 9/28 | 16.1 | provisional |
| Sun, 9/27 | 21.8 | provisional |
| Sat, 9/26 | 11.5 | provisional |
| Fri, 9/25 | 30.5 | provisional |
| Thu, 9/24 | 23.6 | provisional |
| Wed, 9/23 | 12.2 | provisional |
| Tue, 9/22 | 25.7 | provisional |
| Mon, 9/21 | 15.7 | provisional |
| Sun, 9/20 | 7 | provisional |
| Sat, 9/19 | 9.9 | provisional |
| Fri, 9/18 | 13 | provisional |
| Thu, 9/17 | 8.9 | provisional |
| Wed, 9/16 | 21.3 | provisional |
| Tue, 9/15 | 27.3 | provisional |
| Mon, 9/14 | 21 | provisional |
| Sun, 9/13 | 5.1 | provisional |
| Sat, 9/12 | 21.1 | provisional |
| Fri, 9/11 | 8.1 | provisional |
| Thu, 9/10 | 3.9 | provisional |
| Wed, 9/9 | 6.3 | provisional |
| Tue, 9/8 | 11.9 | provisional |
| Mon, 9/7 | 11.2 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 24.4 | 14.7 | measured in 94 % of hours · provisional · year before: same days |
| September 2026 | 15.5 | 9.8 | measured in 100 % of hours · provisional |
| August 2026 | 14.1 | 13.3 | measured in 100 % of hours · provisional |
| July 2026 | too few readings | too few readings | measured in 71 % of hours · provisional · 8 days without data from the station |
| June 2026 | 7.9 | 9.4 | measured in 96 % of hours · provisional |
| May 2026 | 9.4 | 7.2 | measured in 98 % of hours · provisional |
| April 2026 | 16.1 | 9.4 | measured in 100 % of hours · provisional |
| March 2026 | 13.6 | 10 | measured in 100 % of hours · provisional |
| February 2026 | 10.9 | 17.6 | measured in 100 % of hours · provisional |
| January 2026 | 16.9 | 12.3 | measured in 100 % of hours · provisional |
| December 2025 | 18.9 | 16.9 | measured in 100 % of hours · verified |
| November 2025 | 14.1 | 11.7 | 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) | 13.1* | 12.2 | 10.2 |
| Highest daily average, µg/m³ | 44January 19 | 36December 30 | 43June 24 |
| Highest hourly value, µg/m³ | 88August 8 | 94June 12 | 136September 22 |
| Hours measured | 96 % | 97 % | 96 % |
| Days without any reading from the station | 8 | 0 | 9 |
* 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 2026 there were 0 such days.
- WHO 2021: daily 25 µg/m³, at most three to four days a year. In 2026 there were 15 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
109.1
Nowµg/m³
Measured at 16:00
65.9
Last 24 hoursµg/m³
measured in 83 % of hours · provisional
77.5
Last 7 daysµg/m³
measured in 95 % of hours · provisional
69.7
Last 30 daysµg/m³
measured in 99 % of hours · provisional
69.8
Last 12 monthsµg/m³
measured in 96 % of hours · provisional
Days in 2026: O₃, 8-hour average above 120 µg/m³
77 days above the limit. 8 days without any reading from the station.
- above the limit
- below the limit
- too few readings for the day
- no O₃ data in the EEA database
- no data from the station
Days above the limit with values (77)
- Apr 5 123
- Apr 7 122
- Apr 12 122
- Apr 18 123
- Apr 19 121
- Apr 20 124
- Apr 23 127
- Apr 24 125
- Apr 25 139
- Apr 26 146
- Apr 27 136
- Apr 28 137
- May 1 124
- May 2 139
- May 3 121
- May 4 125
- May 14 122
- May 20 134
- May 21 130
- May 24 128
- May 25 137
- May 26 139
- May 28 135
- May 29 131
- May 30 130
- May 31 147
- Jun 1 130
- Jun 9 128
- Jun 13 130
- Jun 14 124
- Jun 15 128
- Jun 18 157
- Jun 19 132
- Jun 20 125
- Jun 21 141
- Jun 22 137
- Jun 23 137
- Jun 24 123
- Jun 25 133
- Jun 26 122
- Jun 27 141
- Jun 28 131
- Jun 29 157
- Jun 30 138
- Jul 1 123
- Jul 3 133
- Jul 5 128
- Jul 7 133
- Jul 8 141
- Jul 11 122
- Jul 12 139
- Jul 27 121
- Jul 29 126
- Jul 30 146
- Jul 31 152
- Aug 1 158
- Aug 2 134
- Aug 7 139
- Aug 8 130
- Aug 9 133
- Aug 10 140
- Aug 11 129
- Aug 12 134
- Aug 13 130
- Aug 14 130
- Aug 15 138
- Aug 16 139
- Aug 17 131
- Aug 18 128
- Aug 19 120
- Aug 20 124
- Aug 21 121
- Aug 31 125
- Sep 3 126
- Sep 5 127
- Sep 8 132
- Oct 3 122
Values in µg/m³, limit 120 µg/m³.
Months of 2026
| Month | Days above 120 | Highest 8 h | No readings |
|---|---|---|---|
| January | 0 | 91 | 0 |
| February | 0 | 99 | 0 |
| March | 0 | 115 | 0 |
| April | 12 above the number allowed | 146 | 0 |
| May | 14 above the number allowed | 147 | 0 |
| June | 18 above the number allowed | 157 | 0 |
| July | 11 above the number allowed | 152 | 8 |
| August | 18 above the number allowed | 158 | 0 |
| September | 3 above the number allowed | 132 | 0 |
| October up to yesterday | 1 above the number allowed | 122 | 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 | ||
| 18:00 | 96 | model estimate, not counted |
| 17:00 | 96 | model estimate, not counted |
| 16:00 | 95 | model estimate, not counted |
| 15:00 | 105.5 | |
| 14:00 | 96.3 | |
| 13:00 | 102.4 | |
| 12:00 | 105.2 | |
| 11:00 | 98.4 | |
| 10:00 | 90.8 | |
| 09:00 | 68.9 | |
| 08:00 | 74.4 | |
| 07:00 | 83 | |
| 06:00 | 64.5 | |
| 05:00 | 16.2 | |
| 04:00 | 13 | |
| 03:00 | 26.7 | |
| 02:00 | 66.4 | |
| 01:00 | 59.6 | |
| Tuesday, 10/6 | ||
| 00:00 | 46 | |
| 23:00 | 19.2 | |
| 22:00 | 64.3 | |
| 21:00 | 31.5 | |
| 20:00 | 85.7 | |
| 19:00 | 94.8 | |
| 18:00 | 102.9 | |
| 17:00 | 99.9 | |
| 16:00 | 103.2 | |
| 15:00 | 106.3 | |
| 14:00 | 97.5 | |
| 13:00 | 97.6 | |
| 12:00 | 88.5 | |
| 11:00 | 79.7 | |
| 10:00 | 49.4 | |
| 09:00 | 23 | |
| 08:00 | 12.2 | |
| 07:00 | 35 | |
| 06:00 | 52.3 | |
| 05:00 | 66.9 | |
| 04:00 | 27.1 | |
| 03:00 | 74.4 | |
| 02:00 | 39.2 | |
| 01:00 | 38.7 | |
| Monday, 10/5 | ||
| 00:00 | 32.5 | |
| 23:00 | 66.3 | |
| 22:00 | 93.3 | |
| 21:00 | 109 | |
| 20:00 | 119.6 | |
| 19:00 | 123.4 | |
| 18:00 | 128.6 | |
| 17:00 | 134 | |
| 16:00 | 132.6 | |
| 15:00 | 129.6 | |
| 14:00 | 127.3 | |
| 13:00 | 120.3 | |
| 12:00 | 114.3 | |
| 02:00 | 34.3 | |
| 01:00 | 22.6 | |
| Sunday, 10/4 | ||
| 00:00 | 48.9 | |
| 23:00 | 100.6 | |
| 22:00 | 99.9 | |
| 21:00 | 104 | |
| 20:00 | 116.2 | |
| 19:00 | 120.1 | |
| 18:00 | 124.6 | |
| 17:00 | 119.1 | |
| 16:00 | 121.3 | |
| 15:00 | 118.8 | |
| 14:00 | 119.9 | |
| 13:00 | 113.9 | |
| 12:00 | 109.8 | |
| 11:00 | 96.2 | |
| 10:00 | 45.7 | |
| 09:00 | 11.5 | |
| 08:00 | 14.5 | |
| 07:00 | 40.4 | |
| 06:00 | 53.6 | |
| 05:00 | 74.1 | |
| 04:00 | 85.9 | |
| 03:00 | 74.1 | |
| 02:00 | 88 | |
| 01:00 | 75.6 | |
| Saturday, 10/3 | ||
| 00:00 | 61.2 | |
| 23:00 | 94.8 | |
| 22:00 | 105.7 | |
| 21:00 | 109.5 | |
| 20:00 | 118.5 | |
| 19:00 | 124.6 | |
| 18:00 | 124.4 | |
| 17:00 | 121.1 | |
| 16:00 | 124 | |
| 15:00 | 123.5 | |
| 14:00 | 122.6 | |
| 13:00 | 116.3 | |
| 12:00 | 113.2 | |
| 11:00 | 87.2 | |
| 10:00 | 55.6 | |
| 09:00 | 22.7 | |
| 08:00 | 40.1 | |
| 07:00 | 64.9 | |
| 06:00 | 59.6 | |
| 05:00 | 40.6 | |
| 04:00 | 46.6 | |
| 03:00 | 19.3 | |
| 02:00 | 24.8 | |
| 01:00 | 7.3 | |
| Friday, 10/2 | ||
| 00:00 | 44.1 | |
| 23:00 | 81.4 | |
| 22:00 | 58.8 | |
| 21:00 | 79.1 | |
| 20:00 | 94.4 | |
| 19:00 | 107.3 | |
| 18:00 | 114.5 | |
| 17:00 | 112.5 | |
| 16:00 | 111.7 | |
| 15:00 | 98.6 | |
| 14:00 | 103.8 | |
| 13:00 | 106.9 | |
| 12:00 | 84.2 | |
| 11:00 | 42.9 | |
| 10:00 | 22.3 | |
| 09:00 | 28.2 | |
| 08:00 | 39.2 | |
| 07:00 | 26.4 | |
| 06:00 | 23.7 | |
| 05:00 | 25.9 | |
| 04:00 | 31.2 | |
| 03:00 | 29.1 | |
| 02:00 | 31.1 | |
| 01:00 | 44.7 | |
| Thursday, 10/1 | ||
| 00:00 | 47.5 | |
| 23:00 | 60.2 | |
| 22:00 | 56.4 | |
| 21:00 | 65.2 | |
| 20:00 | 87.6 | |
| 19:00 | 102.2 | |
| 18:00 | 110.4 | |
| 17:00 | 124.4 | |
| 16:00 | 124.7 | |
| 15:00 | 109.2 | |
| 14:00 | 121.8 | |
| 13:00 | 107.4 | |
| 12:00 | 98.3 | |
| 11:00 | 69.5 | |
| 10:00 | 40.1 | |
| 09:00 | 9.3 | |
| 08:00 | 14.3 | |
| 07:00 | 22.5 | |
| 06:00 | 40.1 | |
| 05:00 | 61.1 | |
| 04:00 | 65.1 | |
| 03:00 | 58 | |
| 02:00 | 69.2 | |
| 01:00 | 82.3 | |
| Wednesday, 9/30 | ||
| 00:00 | 89.9 | |
| 23:00 | 85.5 | |
| 22:00 | 91.7 | |
| 21:00 | 96.2 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 98.8 | provisional |
| Mon, 10/5 | too few readings | |
| Sun, 10/4 | 119.2 | provisional |
| Sat, 10/3 | 121.9 | above the limit · provisional |
| Fri, 10/2 | 106.2 | provisional |
| Thu, 10/1 | 112.3 | provisional |
| Wed, 9/30 | 111.5 | provisional |
| Tue, 9/29 | 102.1 | provisional |
| Mon, 9/28 | 111.5 | provisional |
| Sun, 9/27 | 100.9 | provisional |
| Sat, 9/26 | 95.3 | provisional |
| Fri, 9/25 | 72.4 | provisional |
| Thu, 9/24 | 99.5 | provisional |
| Wed, 9/23 | 82.3 | provisional |
| Tue, 9/22 | 78.3 | provisional |
| Mon, 9/21 | 83.6 | provisional |
| Sun, 9/20 | 97.6 | provisional |
| Sat, 9/19 | 96.5 | provisional |
| Fri, 9/18 | 81.7 | provisional |
| Thu, 9/17 | 83.4 | provisional |
| Wed, 9/16 | 100.9 | provisional |
| Tue, 9/15 | 92.1 | provisional |
| Mon, 9/14 | 111.1 | provisional |
| Sun, 9/13 | 102.3 | provisional |
| Sat, 9/12 | 89.3 | provisional |
| Fri, 9/11 | 79.9 | provisional |
| Thu, 9/10 | 86.3 | provisional |
| Wed, 9/9 | 104.1 | provisional |
| Tue, 9/8 | 132.1 | above the limit · provisional |
| Mon, 9/7 | 116.4 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 76.4 | 58.8 | measured in 94 % of hours · provisional · year before: same days |
| September 2026 | 71.5 | 70.7 | measured in 100 % of hours · provisional |
| August 2026 | 89.4 | 89.8 | measured in 100 % of hours · provisional |
| July 2026 | too few readings | 92.6 | measured in 71 % of hours · provisional · 8 days without data from the station |
| June 2026 | 94.6 | 88.4 | measured in 96 % of hours · provisional |
| May 2026 | 93.1 | 80.8 | measured in 98 % of hours · provisional |
| April 2026 | 82.3 | 76.1 | measured in 100 % of hours · provisional |
| March 2026 | 70.3 | 69.5 | measured in 93 % of hours · provisional |
| February 2026 | 59 | 52.7 | measured in 100 % of hours · provisional |
| January 2026 | 45.7 | 51.5 | measured in 100 % of hours · provisional |
| December 2025 | 29.5 | 42.2 | measured in 100 % of hours · verified |
| November 2025 | 52.2 | 47.8 | 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) | 77 | 41 | 42 |
| Annual average, µg/m³ | 77.5* | 67.8 | 67.7 |
| Highest 8-hour average, µg/m³ | 158August 1 | 167July 3 | 144August 30 |
| Hours measured | 95 % | 100 % | 96 % |
| Days without any reading from the station | 8 | 0 | 9 |
* 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.
The column for 2023 is shown on wider screens.
The worst days of 2026
| Day | Highest 8 h | Times the limit |
|---|---|---|
| Aug 1, 2026provisional | 158 | 1.3 × |
| Jun 29, 2026provisional | 157 | 1.3 × |
| Jun 18, 2026provisional | 157 | 1.3 × |
| Jul 31, 2026provisional | 152 | 1.3 × |
| May 31, 2026provisional | 147 | 1.2 × |
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: 10
2 outages, 243 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Jul 13, 2026 12:00 | Jul 22, 2026 13:00 | 9 days |
| Jun 4, 2026 09:00 | Jun 5, 2026 11:00 | 26 hours |
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.