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Air at the Iskrba station

Kočevje, Slovenia

Network: Slovenian Environment Agency · Station code: SI0008R

This year, up to yesterday (October 6)

33 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: 30 days above the limit, the target value allows 25 as a three-year average.

1 day

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 149 µg/m³ as a daily average, 1.2 times the limit.

Daily average for 275 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)

All figures by year and month

Moderate

Air now · Measured at 18:00

Latest values

Latest value: 18:00

Readings
PollutantValueLevel
PM10Model estimate, not a measurement18 µg/m³no level
NO₂Model estimate, not a measurement1 µg/m³no level
O₃112.1 µg/m³Moderate

How the air is changing

Over the last seven days there was more PM10, PM2.5, and O₃ in the air than the week before.

  • PM10: average 17.4 µg/m³, week before 9.6 µg/m³
  • PM2.5: average 7.3 µg/m³, week before 4.9 µg/m³
  • NO₂: too few readings to compare
  • O₃: average 43.4 µg/m³, week before 38.2 µg/m³
  • SO₂: average 3.9 µg/m³, week before 3.7 µg/m³

Last month there was less PM10, PM2.5, and O₃ in the air than the month before.

  • PM10: average 10.7 µg/m³, month before 17.3 µg/m³
  • PM2.5: average 4.2 µg/m³, month before 7.6 µg/m³
  • NO₂: too few readings to compare
  • O₃: average 43.7 µg/m³, month before 73 µg/m³
  • SO₂: average 3.2 µg/m³, month before 3.4 µg/m³

Show

Ozone O₃

112.1

Nowµg/m³

Measured at 18:00

40.8

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

43.4

Last 7 daysµg/m³

measured in 100 % of hours · provisional

40.5

Last 30 daysµg/m³

measured in 100 % of hours · provisional

51.1

Last 12 monthsµg/m³

measured in 97 % of hours · provisional

Days in 2026: O₃, 8-hour average above 120 µg/m³

33 days above the limit.

1102031JanFebMarAprApr 25: 137 µg/m³, above the limitApr 26: 131 µg/m³, above the limitMayMay 4: 123 µg/m³, above the limitJunJun 26: 133 µg/m³, above the limitJun 27: 127 µg/m³, above the limitJun 29: 126 µg/m³, above the limitJulJul 14: 121 µg/m³, above the limitJul 16: 126 µg/m³, above the limitJul 19: 120 µg/m³, above the limitJul 26: 121 µg/m³, above the limitJul 30: 129 µg/m³, above the limitJul 31: 134 µg/m³, above the limitAugAug 1: 132 µg/m³, above the limitAug 2: 129 µg/m³, above the limitAug 3: 123 µg/m³, above the limitAug 4: 126 µg/m³, above the limitAug 6: 149 µg/m³, above the limitAug 7: 134 µg/m³, above the limitAug 8: 132 µg/m³, above the limitAug 9: 129 µg/m³, above the limitAug 10: 132 µg/m³, above the limitAug 11: 132 µg/m³, above the limitAug 12: 135 µg/m³, above the limitAug 13: 140 µg/m³, above the limitAug 14: 134 µg/m³, above the limitAug 15: 145 µg/m³, above the limitAug 16: 144 µg/m³, above the limitAug 17: 132 µg/m³, above the limitAug 19: 143 µg/m³, above the limitAug 20: 129 µg/m³, above the limitAug 21: 123 µg/m³, above the limitAug 24: 123 µg/m³, above the limitSepSep 4: 122 µg/m³, above the limitOctNovDec
  • 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 (33)
  1. Apr 25 137
  2. Apr 26 131
  3. May 4 123
  4. Jun 26 133
  5. Jun 27 127
  6. Jun 29 126
  7. Jul 14 121
  8. Jul 16 126
  9. Jul 19 120
  10. Jul 26 121
  11. Jul 30 129
  12. Jul 31 134
  13. Aug 1 132
  14. Aug 2 129
  15. Aug 3 123
  16. Aug 4 126
  17. Aug 6 149
  18. Aug 7 134
  19. Aug 8 132
  20. Aug 9 129
  21. Aug 10 132
  22. Aug 11 132
  23. Aug 12 135
  24. Aug 13 140
  25. Aug 14 134
  26. Aug 15 145
  27. Aug 16 144
  28. Aug 17 132
  29. Aug 19 143
  30. Aug 20 129
  31. Aug 21 123
  32. Aug 24 123
  33. Sep 4 122

Values in µg/m³, limit 120 µg/m³.

Months of 2026

MonthDays above 120Highest 8 hNo readings
January0810
February0940
March01140
April2 above the number allowed1370
May1 above the number allowed1230
June3 above the number allowed1330
July6 above the number allowed1340
August20 above the number allowed1490
September1 above the number allowed1220
October up to yesterday01050

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.

Last 7 days, every hour: O₃ in µg/m³highest 115 µg/m³, latest 115 µg/m³ (16:00)050100150ThuFriSatSunMonTueWedlatest 115 (16:00)
measuredmodel estimate, not counted
Last 7 days, every hour: O₃ in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
17:0095model estimate, not counted
16:00114.9
15:00111.6
14:00109.4
13:00107
12:00109.7
11:00111.5
10:0047.3
09:008.3
08:004.7
07:004.6
06:004.8
05:005
04:005.6
03:006.6
02:007.4
01:006.4
Tuesday, 10/6
00:006
23:006.7
22:009.7
21:0020.9
20:0035.3
19:0054
18:0087.3
17:0096.8
16:0098.7
15:0099.1
14:0097.5
13:0092.5
12:0094
11:0076.8
10:0036.4
09:007.6
08:004.6
07:004.6
06:004.6
05:004.7
04:004.6
03:004.6
02:004.9
01:005.1
Monday, 10/5
00:005.7
23:007.1
22:0011.1
21:0022.1
20:0040.7
19:0067.3
18:00101.7
17:0099.7
16:0096.3
15:0095.8
14:0092.8
13:0093.3
12:0087.2
11:0070.4
10:0030.9
09:0010.5
08:004.4
07:004.4
06:004.4
05:004.7
04:004.7
03:004.9
02:005
01:005.8
Sunday, 10/4
00:006.5
23:009.1
22:0016.6
21:0027.3
20:0044.1
19:0080.2
18:00110.7
17:00112.5
16:00110.3
15:00108.5
14:00104.7
13:0099.8
12:0093.6
11:0072.1
10:0047.3
09:009.4
08:004.6
07:004.4
06:004.4
05:004.6
04:004.7
03:005.4
02:005.8
01:006.4
Saturday, 10/3
00:008.2
23:0013
22:0019.6
21:0034.9
20:0054.2
19:0086.2
18:00111.7
17:00114.6
16:00111.2
15:00108.5
14:00107.9
13:00106.3
12:0096.6
11:0068.4
10:0041.9
09:006.9
08:004.2
07:004.2
06:004.3
05:004.2
04:004.4
03:004.8
02:005.3
01:006.2
Friday, 10/2
00:007.7
23:0012.2
22:0020.1
21:0030.8
20:0051.4
19:0079
18:00105.1
17:00105.3
16:00105.1
15:00103
14:00102
13:0099.8
12:0089.1
11:0068.5
10:0021.5
09:005.6
08:004.5
07:004.2
06:004.3
05:004.6
04:004.6
03:005.1
02:005.5
01:006.4
Thursday, 10/1
00:008.5
23:0012.3
22:0018.3
21:0034.2
20:0054.1
19:0085.7
18:00107.2
17:00107.4
16:00102.9
15:0098.6
14:0097.6
13:0091.5
12:0089.5
11:0073.2
10:0048.2
09:009.8
08:004.6
07:004.2
06:004.3
05:004.4
04:004.4
03:004.5
02:004.9
01:005.1
Wednesday, 9/30
00:005.9
23:008.7
22:0013.9
21:0023.4
20:0042.4
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³highest 114 µg/m³, latest 93 µg/m³0501001509/99/169/239/30highest 114latest 93
target value, 120 µg/m³
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³
Values as a table
Dayµg/m³Note
Tue, 10/692.9provisional
Mon, 10/592.1provisional
Sun, 10/4102.5provisional
Sat, 10/3105.4provisional
Fri, 10/298.5provisional
Thu, 10/197.5provisional
Wed, 9/3097.8provisional
Tue, 9/29105.2provisional
Mon, 9/2893.2provisional
Sun, 9/2789.8provisional
Sat, 9/2685.5provisional
Fri, 9/2574.2provisional
Thu, 9/2471.1provisional
Wed, 9/2369.2provisional
Tue, 9/2276provisional
Mon, 9/2169.5provisional
Sun, 9/2074.9provisional
Sat, 9/1957.1provisional
Fri, 9/1850.7provisional
Thu, 9/1761provisional
Wed, 9/1688.1provisional
Tue, 9/1585.9provisional
Mon, 9/1477.6provisional
Sun, 9/1390.2provisional
Sat, 9/1284.7provisional
Fri, 9/1159.1provisional
Thu, 9/1060.9provisional
Wed, 9/991.7provisional
Tue, 9/8114.3provisional
Mon, 9/7108.8provisional
Last 12 months, monthly average: O₃ in µg/m³highest 73 µg/m³, latest 44 µg/m³050100DecFebAprJunAugOcthighest 73latest 44
Last 12 monthsthis month so fara year earlier
Last 12 months, monthly average: O₃ in µg/m³
Values as a table
Monthµg/m³a year earlierNote
October 2026 so far43.545.5measured in 100 % of hours · provisional · year before: same days
September 202643.735.8measured in 100 % of hours · provisional
August 20267353.4measured in 100 % of hours · provisional
July 202663.557.3measured in 100 % of hours · provisional
June 202657.372.7measured in 91 % of hours · provisional
May 202663.862measured in 97 % of hours · provisional
April 202664.866.9measured in 99 % of hours · provisional
March 202653.764.5measured in 94 % of hours · provisional
February 202643.349measured in 97 % of hours · provisional
January 202648.157.3measured in 100 % of hours · provisional
December 202521.934.2measured in 96 % of hours · verified
November 202540.943.7measured in 96 % of hours · verified

O₃ by year

Yardstick: EU limits (Directive 2008/50/EC)

Measure2026*20252024
Days with 8-hour average above 120 µg/m³ (target value 25)333017
Annual average, µg/m³56.7*51.650.8
Highest 8-hour average, µg/m³149August 6153June 26145July 19
Hours measured98 %96 %94 %
Days without any reading from the station000

* 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

DayHighest 8 hTimes the limit
Aug 6, 2026provisional1491.2 ×
Aug 15, 2026provisional1451.2 ×
Aug 16, 2026provisional1441.2 ×
Aug 19, 2026provisional1431.2 ×
Aug 13, 2026provisional1401.2 ×

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: 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.

How we measure

samoEKO is a brand of samoLabs, Juelich.