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Air at the Maribor Vrbanski plato station

Maribor, Slovenia

Network: Slovenian Environment Agency · Station code: SI0059A

This year, up to yesterday (October 6)

43 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: 39 days above the limit, the target value allows 25 as a three-year average.

4 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 155 µg/m³ as a daily average, 1.3 times the limit.

Daily average for 277 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 19:00

Latest values

Latest value: 19:00

Readings
PollutantValueLevel
PM10Model estimate, not a measurement19 µg/m³no level
NO₂Model estimate, not a measurement8 µg/m³no level
O₃104.5 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 19.5 µg/m³, week before 12.4 µg/m³
  • PM2.5: average 9.9 µg/m³, week before 7 µg/m³
  • NO₂: average 5.3 µg/m³, week before 5 µg/m³
  • O₃: average 70.7 µg/m³, week before 55.1 µg/m³

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

  • PM10: average 9.5 µg/m³, month before 13 µg/m³
  • PM2.5: average 4.8 µg/m³, month before 7.1 µg/m³
  • NO₂: average 4.1 µg/m³, month before 3.7 µg/m³
  • O₃: average 59.8 µg/m³, month before 92.5 µg/m³

Show

Ozone O₃

104.5

Nowµg/m³

Measured at 19:00

61

Last 24 hoursµg/m³

measured in 96 % of hours · provisional

70.7

Last 7 daysµg/m³

measured in 100 % of hours · provisional

60.2

Last 30 daysµg/m³

measured in 100 % of hours · provisional

55.9

Last 12 monthsµg/m³

measured in 97 % of hours · provisional

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

43 days above the limit.

1102031JanFebMarAprApr 25: 128 µg/m³, above the limitMayMay 3: 121 µg/m³, above the limitMay 4: 132 µg/m³, above the limitMay 25: 130 µg/m³, above the limitMay 26: 123 µg/m³, above the limitMay 27: 124 µg/m³, above the limitMay 29: 121 µg/m³, above the limitJunJun 26: 122 µg/m³, above the limitJun 27: 135 µg/m³, above the limitJun 28: 129 µg/m³, above the limitJun 29: 134 µg/m³, above the limitJun 30: 140 µg/m³, above the limitJulJul 3: 121 µg/m³, above the limitJul 13: 120 µg/m³, above the limitJul 15: 133 µg/m³, above the limitJul 16: 129 µg/m³, above the limitJul 17: 122 µg/m³, above the limitJul 18: 125 µg/m³, above the limitJul 26: 123 µg/m³, above the limitJul 29: 133 µg/m³, above the limitJul 30: 145 µg/m³, above the limitJul 31: 150 µg/m³, above the limitAugAug 1: 148 µg/m³, above the limitAug 2: 138 µg/m³, above the limitAug 3: 139 µg/m³, above the limitAug 4: 145 µg/m³, above the limitAug 5: 149 µg/m³, above the limitAug 6: 155 µg/m³, above the limitAug 7: 134 µg/m³, above the limitAug 8: 123 µg/m³, above the limitAug 9: 138 µg/m³, above the limitAug 10: 133 µg/m³, above the limitAug 11: 126 µg/m³, above the limitAug 13: 122 µg/m³, above the limitAug 14: 137 µg/m³, above the limitAug 15: 134 µg/m³, above the limitAug 16: 144 µg/m³, above the limitAug 17: 128 µg/m³, above the limitAug 19: 142 µg/m³, above the limitAug 20: 129 µg/m³, above the limitAug 24: 120 µg/m³, above the limitAug 28: 121 µg/m³, above the limitSepSep 8: 120 µg/m³, above the limitOctNovDec
  • above the limit
  • below the limit
  • too few readings for the day
Days above the limit with values (43)
  1. Apr 25 128
  2. May 3 121
  3. May 4 132
  4. May 25 130
  5. May 26 123
  6. May 27 124
  7. May 29 121
  8. Jun 26 122
  9. Jun 27 135
  10. Jun 28 129
  11. Jun 29 134
  12. Jun 30 140
  13. Jul 3 121
  14. Jul 13 120
  15. Jul 15 133
  16. Jul 16 129
  17. Jul 17 122
  18. Jul 18 125
  19. Jul 26 123
  20. Jul 29 133
  21. Jul 30 145
  22. Jul 31 150
  23. Aug 1 148
  24. Aug 2 138
  25. Aug 3 139
  26. Aug 4 145
  27. Aug 5 149
  28. Aug 6 155
  29. Aug 7 134
  30. Aug 8 123
  31. Aug 9 138
  32. Aug 10 133
  33. Aug 11 126
  34. Aug 13 122
  35. Aug 14 137
  36. Aug 15 134
  37. Aug 16 144
  38. Aug 17 128
  39. Aug 19 142
  40. Aug 20 129
  41. Aug 24 120
  42. Aug 28 121
  43. Sep 8 120

Values in µg/m³, limit 120 µg/m³.

Months of 2026

MonthDays above 120Highest 8 hNo readings
January0770
February0840
March01190
April1 above the number allowed1280
May6 above the number allowed1320
June5 above the number allowed1400
July10 above the number allowed1500
August20 above the number allowed1550
September1 above the number allowed1200
October up to yesterday01150

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 130 µg/m³, latest 105 µg/m³ (19:00)050100150ThuFriSatSunMonTueWedlatest 105 (19:00)
measured
Last 7 days, every hour: O₃ in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
19:00104.5
18:00111.5
17:00112.6
16:00113.4
15:00111.8
14:00112.3
13:00108.1
12:0094.5
11:0076.3
10:0052
09:0014.3
08:0010.6
07:0017.7
06:0022.2
05:0029.1
04:0026.3
03:0029.8
02:0029.6
01:0029.9
Tuesday, 10/6
00:0047.1
23:0047.6
22:0042.8
21:0058.6
20:0073.8
19:00107.5
18:00121.4
17:00123.3
16:00129.6
15:00127.5
14:00122
13:00102.1
12:0069.1
11:0048
10:0038
09:0027.3
08:0027.7
07:0031.6
06:0039.8
05:0048.7
04:0051.2
03:0054
02:0056.1
01:0055.9
Monday, 10/5
00:0057.2
23:0055.2
22:0064.4
21:0063.1
20:0061.8
19:0072.6
18:00107.3
17:00116.5
16:00118
15:00116.1
14:00110.7
13:0078.6
12:0060.8
11:0046.9
10:0042.4
09:0041.3
08:0040.1
07:0045.6
06:0050.3
05:0053.4
04:0055.9
03:0056.5
02:0053.5
01:0048.2
Sunday, 10/4
00:0046.9
23:0049.7
22:0054.1
21:0056
20:0068.6
19:0097
18:00114.8
17:00119.9
16:00119.9
15:00118.4
14:00112
13:0097.2
12:0076
11:0067.5
10:0063.7
09:0060.5
08:0060.1
07:0064
06:0068.5
05:0068.4
04:0051.6
03:0053.1
02:0050.6
01:0053.6
Saturday, 10/3
00:0056.9
23:0060.4
22:0065.3
21:0067.6
20:0075.5
19:00107.6
18:00121.8
17:00124.2
16:00125.4
15:00125.7
14:00119.8
13:00106.8
12:0087.7
11:0067.5
10:0056.3
09:0052.2
08:0053.3
07:0057.1
06:0060.4
05:0063.5
04:0063.4
03:0056.7
02:0054.2
01:0059.2
Friday, 10/2
00:0066.6
23:0062.8
22:0065.4
21:0063.7
20:0065.3
19:0087.7
18:00113.9
17:00112.1
16:00111.9
15:00111.2
14:00110.5
13:00100.4
12:0087.5
11:0070.2
10:0054.9
09:0055.4
08:0049.9
07:0059.3
06:0059.2
05:0054.4
04:0055.7
03:0056.2
02:0055.8
01:0053.8
Thursday, 10/1
00:0055.6
23:0062.1
22:0053.4
21:0058.8
20:0057.8
19:0082.6
18:00108.4
17:00109.3
16:00106
15:00102.4
14:0098.3
13:0094.6
12:0088.6
11:0073.4
10:0057.1
09:0038.6
08:0016.9
07:0039.8
06:0037
05:0033.3
04:0041.3
03:0045.9
02:0051.6
01:0060.8
Wednesday, 9/30
00:0065.3
23:0052.9
22:0062.4
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³ · 1 day above the limithighest 120 µg/m³, latest 113 µg/m³0501001509/99/169/239/30highest 120latest 113
day above the limittarget value, 120 µg/m³
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³ · 1 day above the limit
Values as a table
Dayµg/m³Note
Tue, 10/6113.4provisional
Mon, 10/597.7provisional
Sun, 10/4106.9provisional
Sat, 10/3114.9provisional
Fri, 10/2104.4provisional
Thu, 10/198.8provisional
Wed, 9/30101provisional
Tue, 9/29110.1provisional
Mon, 9/28109.9provisional
Sun, 9/27102.6provisional
Sat, 9/2691provisional
Fri, 9/2581.4provisional
Thu, 9/2453.3provisional
Wed, 9/2380.2provisional
Tue, 9/2274.3provisional
Mon, 9/2175.9provisional
Sun, 9/2081.4provisional
Sat, 9/1998.3provisional
Fri, 9/1881.4provisional
Thu, 9/1769.6provisional
Wed, 9/1695provisional
Tue, 9/1590.2provisional
Mon, 9/1458.3provisional
Sun, 9/1389provisional
Sat, 9/1295.1provisional
Fri, 9/1164.9provisional
Thu, 9/1079.1provisional
Wed, 9/9107.5provisional
Tue, 9/8120.1above the limit · provisional
Mon, 9/7115.5provisional
Last 12 months, monthly average: O₃ in µg/m³highest 93 µg/m³, latest 72 µg/m³050100150DecFebAprJunAugOcthighest 93latest 72
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 far71.642.8measured in 100 % of hours · provisional · year before: same days
September 202659.845.3measured in 100 % of hours · provisional
August 202692.575.4measured in 100 % of hours · provisional
July 202683.577.9measured in 100 % of hours · provisional
June 202667.788.7measured in 94 % of hours · provisional
May 202679.173.2measured in 97 % of hours · provisional
April 202669.669.9measured in 99 % of hours · provisional
March 202661.759.7measured in 96 % of hours · provisional
February 202632.237.1measured in 96 % of hours · provisional
January 202632.135.9measured in 99 % of hours · provisional
December 202514.422.5measured in 96 % of hours · verified
November 202528.824.4measured in 95 % 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)433915
Annual average, µg/m³64.8*53.849.8
Highest 8-hour average, µg/m³155August 6159June 11139September 3
Hours measured98 %96 %94 %
Days without any reading from the station004

* 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, 2026provisional1551.3 ×
Jul 31, 2026provisional1501.3 ×
Aug 5, 2026provisional1491.2 ×
Aug 1, 2026provisional1481.2 ×
Jul 30, 2026provisional1451.2 ×

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.