Air at the Ptuj station
Ptuj, Slovenia
Network: Slovenian Environment Agency · Station code: SI0077A
This year, up to yesterday (October 6)
9 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: 8 days above the limit, 35 allowed.
Worst day: January 24, 2026, PM10 107 µg/m³ as a daily average, 2.1 times the limit.
Daily average for 279 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
Fair
Air now · Measured at 20:00
Latest values
Latest value: 20:00
| Pollutant | Value | Level |
|---|---|---|
| PM10 | 21.7 µg/m³ | Fair |
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 20.7 µg/m³, week before 12.5 µg/m³
- PM2.5: average 11.6 µg/m³, week before 8.3 µg/m³
Last month there was less PM10 and PM2.5 in the air than the month before.
- PM10: average 9.9 µg/m³, month before 14.4 µg/m³
- PM2.5: average 5.5 µg/m³, month before 8.2 µg/m³
Show
Particulate matter PM10
21.7
Nowµg/m³
Measured at 20:00
24.1
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
20.7
Last 7 daysµg/m³
measured in 99 % of hours · provisional
12.4
Last 30 daysµg/m³
measured in 100 % of hours · provisional
18.5
Last 12 monthsµg/m³
measured in 100 % of hours · provisional
Days in 2025: PM10, daily average above 50 µg/m³
8 days above the limit.
- above the limit
- below the limit
Days above the limit with values (8)
- Feb 8 56
- Feb 11 50
- Feb 12 53
- Feb 21 50
- Feb 22 58
- Feb 23 66
- Feb 24 70
- Dec 1 51
Values in µg/m³, limit 50 µg/m³.
Months of 2025
| Month | Days above 50 | Highest day | No readings |
|---|---|---|---|
| January | 0 | 50 | 0 |
| February | 7 above the number allowed | 70 | 0 |
| March | 0 | 46 | 0 |
| April | 0 | 27 | 0 |
| May | 0 | 26 | 0 |
| June | 0 | 29 | 0 |
| July | 0 | 17 | 0 |
| August | 0 | 23 | 0 |
| September | 0 | 19 | 0 |
| October | 0 | 22 | 0 |
| November | 0 | 41 | 0 |
| December | 1 above the number allowed | 51 | 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 | 22 | model estimate, not counted |
| 19:00 | 17.7 | |
| 18:00 | 17.6 | |
| 17:00 | 16.5 | |
| 16:00 | 19.3 | |
| 15:00 | 17.9 | |
| 14:00 | 18.5 | |
| 13:00 | 19.7 | |
| 12:00 | 22.8 | |
| 11:00 | 23 | |
| 10:00 | 28.7 | |
| 09:00 | 33.4 | |
| 08:00 | 35 | |
| 07:00 | 28.1 | |
| 06:00 | 21 | |
| 05:00 | 19.2 | |
| 04:00 | 19.2 | |
| 03:00 | 20.9 | |
| 02:00 | 22.6 | |
| 01:00 | 22.8 | |
| Tuesday, 10/6 | ||
| 00:00 | 30.7 | |
| 23:00 | 34 | |
| 22:00 | 40.8 | |
| 21:00 | 40.2 | |
| 20:00 | 41.4 | |
| 19:00 | 26.9 | |
| 18:00 | 23.1 | |
| 17:00 | 22.2 | |
| 16:00 | 21.1 | |
| 15:00 | 20.1 | |
| 14:00 | 18.8 | |
| 13:00 | 22.8 | |
| 12:00 | 28.6 | |
| 11:00 | 22.1 | |
| 10:00 | 26.5 | |
| 09:00 | 31.2 | |
| 08:00 | 33.8 | |
| 07:00 | 20.7 | |
| 06:00 | 19.5 | |
| 05:00 | 19.6 | |
| 04:00 | 20.9 | |
| 03:00 | 22.8 | |
| 02:00 | 22.5 | |
| 01:00 | 24.3 | |
| Monday, 10/5 | ||
| 00:00 | 23.8 | |
| 23:00 | 24.6 | |
| 22:00 | 29.9 | |
| 21:00 | 27.4 | |
| 20:00 | 29.7 | |
| 19:00 | 19.6 | |
| 18:00 | 15.8 | |
| 17:00 | 15.3 | |
| 16:00 | 14.8 | |
| 15:00 | 15 | |
| 14:00 | 17.9 | |
| 13:00 | 22.3 | |
| 12:00 | 31.8 | |
| 11:00 | 23.4 | |
| 10:00 | 29.7 | |
| 09:00 | 31 | |
| 08:00 | 29 | |
| 07:00 | 19.1 | |
| 06:00 | 16.7 | |
| 05:00 | 15.9 | |
| 04:00 | 16.2 | |
| 03:00 | 14.4 | |
| 02:00 | 13.7 | |
| 01:00 | 14.5 | |
| Sunday, 10/4 | ||
| 00:00 | 14.9 | |
| 23:00 | 16.6 | |
| 22:00 | 20.9 | |
| 21:00 | 24.7 | |
| 20:00 | 24.1 | |
| 19:00 | 15.6 | |
| 18:00 | 13.8 | |
| 17:00 | 13.5 | |
| 16:00 | 13.3 | |
| 15:00 | 13.5 | |
| 14:00 | 14.7 | |
| 13:00 | 17.9 | |
| 12:00 | 16.9 | |
| 11:00 | 17 | |
| 09:00 | 15.8 | |
| 08:00 | 14.5 | |
| 07:00 | 13.5 | |
| 06:00 | 11.7 | |
| 05:00 | 13.9 | |
| 04:00 | 16.5 | |
| 03:00 | 15 | |
| 02:00 | 14.8 | |
| 01:00 | 18.3 | |
| Saturday, 10/3 | ||
| 00:00 | 20.9 | |
| 23:00 | 27.9 | |
| 22:00 | 27.4 | |
| 21:00 | 37.8 | |
| 20:00 | 33.6 | |
| 19:00 | 17.4 | |
| 18:00 | 16.1 | |
| 17:00 | 15.5 | |
| 16:00 | 14 | |
| 15:00 | 15.9 | |
| 14:00 | 16 | |
| 13:00 | 19.9 | |
| 12:00 | 22 | |
| 11:00 | 24 | |
| 10:00 | 19.5 | |
| 09:00 | 23.3 | |
| 08:00 | 17.6 | |
| 07:00 | 15.3 | |
| 06:00 | 15.3 | |
| 05:00 | 13.9 | |
| 04:00 | 14 | |
| 03:00 | 14 | |
| 02:00 | 14.8 | |
| 01:00 | 18.6 | |
| Friday, 10/2 | ||
| 00:00 | 21.2 | |
| 23:00 | 20.7 | |
| 22:00 | 24.8 | |
| 21:00 | 28.6 | |
| 20:00 | 27.9 | |
| 19:00 | 16.5 | |
| 18:00 | 17.3 | |
| 17:00 | 17.6 | |
| 16:00 | 17.8 | |
| 15:00 | 17 | |
| 14:00 | 27.9 | |
| 13:00 | 30 | |
| 12:00 | 24.2 | |
| 11:00 | 24.9 | |
| 10:00 | 25.4 | |
| 09:00 | 26 | |
| 08:00 | 31.3 | |
| 07:00 | 16.8 | |
| 06:00 | 16.7 | |
| 05:00 | 13.5 | |
| 04:00 | 13.5 | |
| 03:00 | 14.2 | |
| 02:00 | 16.1 | |
| 01:00 | 20 | |
| Thursday, 10/1 | ||
| 00:00 | 19.2 | |
| 23:00 | 21.6 | |
| 22:00 | 25.6 | |
| 21:00 | 40.9 | |
| 20:00 | 19.8 | |
| 19:00 | 18.7 | |
| 18:00 | 14.8 | |
| 17:00 | 16 | |
| 16:00 | 18.5 | |
| 15:00 | 19.2 | |
| 14:00 | 17.8 | |
| 13:00 | 22.4 | |
| 12:00 | 23.2 | |
| 11:00 | 27.2 | |
| 10:00 | 32.7 | |
| 09:00 | 30.7 | |
| 08:00 | 30.2 | |
| 07:00 | 24 | |
| 06:00 | 17.5 | |
| 05:00 | 17.4 | |
| 04:00 | 14.3 | |
| 03:00 | 14 | |
| 02:00 | 14 | |
| 01:00 | 14.8 | |
| Wednesday, 9/30 | ||
| 00:00 | 15.9 | |
| 23:00 | 18.7 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 26.4 | provisional |
| Mon, 10/5 | 21.3 | provisional |
| Sun, 10/4 | 16.1 | provisional |
| Sat, 10/3 | 19.8 | provisional |
| Fri, 10/2 | 21.2 | provisional |
| Thu, 10/1 | 21.4 | provisional |
| Wed, 9/30 | 18.3 | provisional |
| Tue, 9/29 | 20.7 | provisional |
| Mon, 9/28 | 19.5 | provisional |
| Sun, 9/27 | 13.2 | provisional |
| Sat, 9/26 | 7.6 | provisional |
| Fri, 9/25 | 6.1 | provisional |
| Thu, 9/24 | 12.6 | provisional |
| Wed, 9/23 | 8.2 | provisional |
| Tue, 9/22 | 8.7 | provisional |
| Mon, 9/21 | 10.1 | provisional |
| Sun, 9/20 | 8.9 | provisional |
| Sat, 9/19 | 9.7 | provisional |
| Fri, 9/18 | 7.5 | provisional |
| Thu, 9/17 | 9.8 | provisional |
| Wed, 9/16 | 8.6 | provisional |
| Tue, 9/15 | 7.1 | provisional |
| Mon, 9/14 | 7.5 | provisional |
| Sun, 9/13 | 8 | provisional |
| Sat, 9/12 | 6.6 | provisional |
| Fri, 9/11 | 4.1 | provisional |
| Thu, 9/10 | 4.2 | provisional |
| Wed, 9/9 | 15.9 | provisional |
| Tue, 9/8 | 12.3 | provisional |
| Mon, 9/7 | 10.9 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 21.1 | 11 | measured in 99 % of hours · provisional · year before: same days |
| September 2026 | 9.9 | 9.7 | measured in 100 % of hours · provisional |
| August 2026 | 14.4 | 12.2 | measured in 100 % of hours · provisional |
| July 2026 | 12 | 9.1 | measured in 100 % of hours · provisional |
| June 2026 | 12.8 | 14.5 | measured in 100 % of hours · provisional |
| May 2026 | 10.8 | 11 | measured in 100 % of hours · provisional |
| April 2026 | 15.7 | 14.6 | measured in 100 % of hours · provisional |
| March 2026 | 23.2 | 15.9 | measured in 100 % of hours · provisional |
| February 2026 | 24.5 | 37.7 | measured in 100 % of hours · provisional |
| January 2026 | 41.4 | 20.2 | measured in 100 % of hours · provisional |
| December 2025 | 24.9 | 26.9 | measured in 100 % of hours · verified |
| November 2025 | 18.6 | 24.8 | 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) | 9 | 8 | 13 |
| Annual average, µg/m³ (EU limit 40) | 18.3* | 16.5 | 19.3 |
| Highest daily average, µg/m³ | 107January 24 | 70February 24 | 134April 1 |
| Highest hourly value, µg/m³ | 142March 9 | 115December 12 | 254April 1 |
| Hours measured | 100 % | 100 % | 100 % |
| Days without any reading from the station | 0 | 0 | 0 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
Unverified hourly values of particulate matter from 975 µg/m³ up, and single spikes from 500 µg/m³ up between low values, count as missing. In the verified data for BiH from 2023 to 2025 no hour was above 600 µg/m³.
■ and a figure in red: more than is allowed for the whole year.
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 2025 there were 14 such days.
- WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2025 there were 14 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2025: 17 µg/m³.
- WHO 2021: annual average 15 µg/m³. Average in 2025: 17 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 2025
| Day | Average | Times the limit |
|---|---|---|
| Feb 24, 2025 | 70 | 1.4 × |
| Feb 23, 2025 | 66 | 1.3 × |
| Feb 22, 2025 | 58 | 1.2 × |
| Feb 8, 2025 | 56 | 1.1 × |
| Feb 12, 2025 | 53 | 1.1 × |
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
11.6
Last 7 daysµg/m³
measured in 99 % of hours · provisional
7.1
Last 30 daysµg/m³
measured in 100 % of hours · provisional
14.1
Last 12 monthsµg/m³
measured in 100 % of hours · provisional
Months of 2025
| Month | Highest day | No readings |
|---|---|---|
| January | 49 | 0 |
| February | 67 | 0 |
| March | 32 | 0 |
| April | 15 | 0 |
| May | 21 | 0 |
| June | 23 | 0 |
| July | 12 | 0 |
| August | 14 | 0 |
| September | 11 | 0 |
| October | 15 | 0 |
| November | 37 | 0 |
| December | 46 | 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 | 21.5 | |
| 23:00 | 21.7 | |
| 22:00 | 22.6 | |
| 21:00 | 21.6 | |
| 20:00 | 20.7 | |
| 19:00 | 16.1 | |
| 18:00 | 14 | |
| 17:00 | 12.6 | |
| 16:00 | 11.8 | |
| 15:00 | 12.1 | |
| 14:00 | 11.7 | |
| 13:00 | 13.3 | |
| 12:00 | 14.4 | |
| 11:00 | 13.5 | |
| 10:00 | 15.5 | |
| 09:00 | 16.1 | |
| 08:00 | 16.7 | |
| 07:00 | 15.4 | |
| 06:00 | 15.2 | |
| 05:00 | 15.3 | |
| 04:00 | 16.7 | |
| 03:00 | 18.5 | |
| 02:00 | 17.6 | |
| 01:00 | 17.4 | |
| Monday, 10/5 | ||
| 00:00 | 15.9 | |
| 23:00 | 16.5 | |
| 22:00 | 16.9 | |
| 21:00 | 13.9 | |
| 20:00 | 13.6 | |
| 19:00 | 10.6 | |
| 18:00 | 8.8 | |
| 17:00 | 8.6 | |
| 16:00 | 8.3 | |
| 15:00 | 8.6 | |
| 14:00 | 10.1 | |
| 13:00 | 11.3 | |
| 12:00 | 14.7 | |
| 11:00 | 14 | |
| 10:00 | 15.8 | |
| 09:00 | 15.1 | |
| 08:00 | 13.9 | |
| 07:00 | 11.8 | |
| 06:00 | 11.7 | |
| 05:00 | 11.9 | |
| 04:00 | 11.9 | |
| 03:00 | 11.1 | |
| 02:00 | 10.7 | |
| 01:00 | 10.3 | |
| Sunday, 10/4 | ||
| 00:00 | 10.4 | |
| 23:00 | 11.4 | |
| 22:00 | 13 | |
| 21:00 | 12.5 | |
| 20:00 | 11.4 | |
| 19:00 | 8.7 | |
| 18:00 | 7.5 | |
| 17:00 | 7.3 | |
| 16:00 | 7.2 | |
| 15:00 | 7.9 | |
| 14:00 | 8.3 | |
| 13:00 | 10.9 | |
| 12:00 | 10.5 | |
| 11:00 | 11.2 | |
| 09:00 | 10.6 | |
| 08:00 | 9.4 | |
| 07:00 | 9.8 | |
| 06:00 | 9.2 | |
| 05:00 | 10.1 | |
| 04:00 | 11.5 | |
| 03:00 | 10.4 | |
| 02:00 | 10.8 | |
| 01:00 | 11.9 | |
| Saturday, 10/3 | ||
| 00:00 | 14.2 | |
| 23:00 | 17.2 | |
| 22:00 | 16.8 | |
| 21:00 | 19.9 | |
| 20:00 | 17.1 | |
| 19:00 | 9.5 | |
| 18:00 | 8.9 | |
| 17:00 | 8.3 | |
| 16:00 | 7.3 | |
| 15:00 | 7.7 | |
| 14:00 | 8 | |
| 13:00 | 9.6 | |
| 12:00 | 11.3 | |
| 11:00 | 14.3 | |
| 10:00 | 11.6 | |
| 09:00 | 13.1 | |
| 08:00 | 11.2 | |
| 07:00 | 10.2 | |
| 06:00 | 10 | |
| 05:00 | 9.1 | |
| 04:00 | 8.9 | |
| 03:00 | 9 | |
| 02:00 | 9.4 | |
| 01:00 | 10.7 | |
| Friday, 10/2 | ||
| 00:00 | 11.8 | |
| 23:00 | 10.5 | |
| 22:00 | 10.7 | |
| 21:00 | 11.2 | |
| 20:00 | 9.3 | |
| 19:00 | 7.5 | |
| 18:00 | 7 | |
| 17:00 | 7 | |
| 16:00 | 7.9 | |
| 15:00 | 8.1 | |
| 14:00 | 11.3 | |
| 13:00 | 13.1 | |
| 12:00 | 11.1 | |
| 11:00 | 12.8 | |
| 10:00 | 12.8 | |
| 09:00 | 11.9 | |
| 08:00 | 12.3 | |
| 07:00 | 10 | |
| 06:00 | 9.8 | |
| 05:00 | 8.7 | |
| 04:00 | 8.5 | |
| 03:00 | 8.8 | |
| 02:00 | 9.6 | |
| 01:00 | 11.3 | |
| Thursday, 10/1 | ||
| 00:00 | 10.2 | |
| 23:00 | 10.5 | |
| 22:00 | 11.5 | |
| 21:00 | 11.8 | |
| 20:00 | 9 | |
| 19:00 | 7.1 | |
| 18:00 | 6.3 | |
| 17:00 | 6.7 | |
| 16:00 | 7.9 | |
| 15:00 | 8.6 | |
| 14:00 | 8.4 | |
| 13:00 | 11 | |
| 12:00 | 12.8 | |
| 11:00 | 14.8 | |
| 10:00 | 17.3 | |
| 09:00 | 16.5 | |
| 08:00 | 16.1 | |
| 07:00 | 14.8 | |
| 06:00 | 11.9 | |
| 05:00 | 12 | |
| 04:00 | 10.2 | |
| 03:00 | 9.4 | |
| 02:00 | 9.3 | |
| 01:00 | 10.5 | |
| Wednesday, 9/30 | ||
| 00:00 | 10.8 | |
| 23:00 | 10.8 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 16.3 | provisional |
| Mon, 10/5 | 12.3 | provisional |
| Sun, 10/4 | 10.1 | provisional |
| Sat, 10/3 | 11.4 | provisional |
| Fri, 10/2 | 10.1 | provisional |
| Thu, 10/1 | 11 | provisional |
| Wed, 9/30 | 9.8 | provisional |
| Tue, 9/29 | 13.4 | provisional |
| Mon, 9/28 | 14.4 | provisional |
| Sun, 9/27 | 10.3 | provisional |
| Sat, 9/26 | 4.7 | provisional |
| Fri, 9/25 | 3.9 | provisional |
| Thu, 9/24 | 7.1 | provisional |
| Wed, 9/23 | 4.1 | provisional |
| Tue, 9/22 | 3.9 | provisional |
| Mon, 9/21 | 4.7 | provisional |
| Sun, 9/20 | 5.9 | provisional |
| Sat, 9/19 | 5.5 | provisional |
| Fri, 9/18 | 4.2 | provisional |
| Thu, 9/17 | 5 | provisional |
| Wed, 9/16 | 4.6 | provisional |
| Tue, 9/15 | 3.8 | provisional |
| Mon, 9/14 | 4.8 | provisional |
| Sun, 9/13 | 4.8 | provisional |
| Sat, 9/12 | 4 | provisional |
| Fri, 9/11 | 2.4 | provisional |
| Thu, 9/10 | 2.5 | provisional |
| Wed, 9/9 | 6.5 | provisional |
| Tue, 9/8 | 5.3 | provisional |
| Mon, 9/7 | 4.8 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 11.9 | 7.8 | measured in 99 % of hours · provisional · year before: same days |
| September 2026 | 5.5 | 5.9 | measured in 100 % of hours · provisional |
| August 2026 | 8.2 | 7.5 | measured in 100 % of hours · provisional |
| July 2026 | 7.1 | 5.4 | measured in 100 % of hours · provisional |
| June 2026 | 7.9 | 9.4 | measured in 100 % of hours · provisional |
| May 2026 | 6.2 | 7.2 | measured in 100 % of hours · provisional |
| April 2026 | 9.9 | 8.4 | measured in 100 % of hours · provisional |
| March 2026 | 16.5 | 11.6 | measured in 100 % of hours · provisional |
| February 2026 | 21.2 | 34.1 | measured in 100 % of hours · provisional |
| January 2026 | 38.9 | 17.6 | measured in 100 % of hours · provisional |
| December 2025 | 23.1 | 24.4 | measured in 100 % of hours · verified |
| November 2025 | 15.9 | 21.9 | 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) | 13.4* | 12.7 | 14.2 |
| Highest daily average, µg/m³ | 102January 24 | 67February 24 | 71January 14 |
| Highest hourly value, µg/m³ | 127January 24 | 92February 24 | 96December 31 |
| Hours measured | 100 % | 100 % | 100 % |
| Days without any reading from the station | 0 | 0 | 0 |
* 2026 up to October 6; the average since the start of the year is not yet an annual average.
The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.
Unverified hourly values of particulate matter from 975 µg/m³ up, and single spikes from 500 µg/m³ up between low values, count as missing. In the verified data for BiH from 2023 to 2025 no hour was above 600 µg/m³.
■ and a figure in red: more than is allowed for the whole year.
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 2025 there were 44 such days.
- WHO 2021: daily 15 µg/m³, at most three to four days a year. In 2025 there were 90 such days.
- EU from 2030: annual average 10 µg/m³. Average in 2025: 13 µg/m³.
- WHO 2021: annual average 5 µg/m³. Average in 2025: 13 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: 0
Timeline of outages from October 7, 2025 to today
In the last 12 months this station had no outage of 24 hours or longer.
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 Slovenian Environment Agency. 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.