Skip to content

Air at the Novo mesto station

Novo mesto, Slovenia

Network: Slovenian Environment Agency · Station code: SI0061A

This year, up to yesterday (October 6)

47 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: 25 days above the limit, the target value allows 25 as a three-year average.

3 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 160 µg/m³ as a daily average, 1.3 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

Fair

Air now · Measured at 21:00

Latest values

Latest value: 21:00

Readings
PollutantValueLevel
PM1021.5 µg/m³Fair
NO₂24.2 µg/m³Fair
O₃78.2 µg/m³Fair

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 17.7 µg/m³, week before 11.9 µg/m³
  • PM2.5: average 11 µg/m³, week before 7.6 µg/m³
  • NO₂: too few readings to compare
  • O₃: average 60.2 µg/m³, week before 45.9 µg/m³

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

  • PM10: average 10.5 µg/m³, month before 13.5 µg/m³
  • PM2.5: average 5.6 µg/m³, month before 7.3 µg/m³
  • NO₂: too few readings to compare
  • O₃: average 55.4 µg/m³, month before 90.6 µg/m³

Show

Ozone O₃

78.2

Nowµg/m³

Measured at 21:00

61.2

Last 24 hoursµg/m³

measured in 96 % of hours · provisional

60.2

Last 7 daysµg/m³

measured in 100 % of hours · provisional

50.8

Last 30 daysµg/m³

measured in 100 % of hours · provisional

52.1

Last 12 monthsµg/m³

measured in 97 % of hours · provisional

Days in 2025: O₃, 8-hour average above 120 µg/m³

25 days above the limit.

1102031JanFebMarAprApr 11: 123 µg/m³, above the limitApr 30: 124 µg/m³, above the limitMayMay 1: 133 µg/m³, above the limitMay 2: 122 µg/m³, above the limitMay 3: 130 µg/m³, above the limitJunJun 11: 137 µg/m³, above the limitJun 12: 126 µg/m³, above the limitJun 13: 130 µg/m³, above the limitJun 14: 139 µg/m³, above the limitJun 15: 130 µg/m³, above the limitJun 23: 151 µg/m³, above the limitJun 24: 148 µg/m³, above the limitJun 25: 152 µg/m³, above the limitJun 26: 142 µg/m³, above the limitJun 27: 132 µg/m³, above the limitJulJul 2: 135 µg/m³, above the limitJul 3: 121 µg/m³, above the limitJul 4: 136 µg/m³, above the limitJul 19: 123 µg/m³, above the limitAugAug 11: 129 µg/m³, above the limitAug 12: 130 µg/m³, above the limitAug 13: 128 µg/m³, above the limitAug 14: 141 µg/m³, above the limitAug 15: 131 µg/m³, above the limitAug 16: 121 µg/m³, above the limitSepOctNovDec
  • above the limit
  • below the limit
  • too few readings for the day
Days above the limit with values (25)
  1. Apr 11 123
  2. Apr 30 124
  3. May 1 133
  4. May 2 122
  5. May 3 130
  6. Jun 11 137
  7. Jun 12 126
  8. Jun 13 130
  9. Jun 14 139
  10. Jun 15 130
  11. Jun 23 151
  12. Jun 24 148
  13. Jun 25 152
  14. Jun 26 142
  15. Jun 27 132
  16. Jul 2 135
  17. Jul 3 121
  18. Jul 4 136
  19. Jul 19 123
  20. Aug 11 129
  21. Aug 12 130
  22. Aug 13 128
  23. Aug 14 141
  24. Aug 15 131
  25. Aug 16 121

Values in µg/m³, limit 120 µg/m³.

Months of 2025

MonthDays above 120Highest 8 hNo readings
January0760
February0870
March01100
April2 above the number allowed1240
May3 above the number allowed1330
June10 above the number allowed1520
July4 above the number allowed1360
August6 above the number allowed1410
September0900
October0750
November0850
December0420

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 124 µg/m³, latest 57 µg/m³ (21:00)050100150ThuFriSatSunMonTueWedlatest 57 (21:00)
measured
Last 7 days, every hour: O₃ in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
21:0057.1
20:0095
19:00112.5
18:00114.5
17:00112.3
16:00108.2
15:00111.1
14:00106.5
13:00104.7
12:0090.1
11:0043.7
10:0019.7
09:0011.4
08:007.7
07:0017.3
06:0023.7
05:0029.9
04:0031.9
03:0041.8
02:0043.6
01:0046
Tuesday, 10/6
00:0042.3
23:0037.2
22:0043.2
21:0042
20:0052.6
19:0088.7
18:00100.8
17:00115.5
16:00123.9
15:00123.3
14:00120.9
13:00110.5
12:0082
11:0064.4
10:0037.3
09:0014.2
08:007.6
07:0011
06:0021.2
05:0021.1
04:0032.2
03:0029.7
02:0029.9
01:0039.5
Monday, 10/5
00:0035.7
23:0032.3
22:0043.3
21:0042.3
20:0050.4
19:0061.7
18:00103
17:00111.3
16:00111.6
15:00107.3
14:00104.2
13:0095
12:0083.6
11:0062.2
10:0036.5
09:0021.2
08:0013.6
07:0018.8
06:0026
05:0033.8
04:0039.7
03:0041.6
02:0044.4
01:0049.6
Sunday, 10/4
00:0053
23:0058.8
22:0060.4
21:0061.3
20:0080.7
19:0097.4
18:00118.9
17:00121.8
16:00120.4
15:00117.6
14:00114.7
13:00104.5
12:0087.8
11:0070.2
10:0048
09:0040.9
08:0028
07:0027.4
06:0037.8
05:0033.8
04:0036.5
03:0043.1
02:0044
01:0048.3
Saturday, 10/3
00:0051.3
23:0053.2
22:0058.2
21:0060.3
20:0075.6
19:00100.8
18:00121.7
17:00119.4
16:00116.7
15:00116.1
14:00119.7
13:00113.3
12:0087.4
11:0061
10:0048
09:0028.7
08:0016
07:0015.5
06:0025.7
05:0029.5
04:0034.5
03:0039
02:0038.8
01:0039.5
Friday, 10/2
00:0042
23:0041.2
22:0035.2
21:0040.4
20:0063.7
19:0083
18:00116.1
17:00115.6
16:00114.9
15:00108
14:00101.4
13:0095.9
12:0069.6
11:0056.2
10:0032.7
09:0014.1
08:0010.6
07:0014
06:0021.5
05:0031.7
04:0030.8
03:0035
02:0039.2
01:0037.7
Thursday, 10/1
00:0042.9
23:0042.6
22:0048.1
21:0057.7
20:0067.4
19:0097.6
18:00117.6
17:00117.3
16:00109
15:00105.4
14:00101.6
13:0098.9
12:0090.5
11:0066.1
10:0043
09:0016.9
08:006.5
07:005.4
06:0013.9
05:0019.8
04:0026
03:0031.9
02:0031.5
01:0038.5
Wednesday, 9/30
00:0041.4
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³ · 2 days above the limithighest 127 µg/m³, latest 108 µg/m³0501001509/99/169/239/30highest 127latest 108
day above the limittarget value, 120 µg/m³
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³ · 2 days above the limit
Values as a table
Dayµg/m³Note
Tue, 10/6108.2provisional
Mon, 10/597.3provisional
Sun, 10/4110.4provisional
Sat, 10/3111.9provisional
Fri, 10/2100.6provisional
Thu, 10/1104.7provisional
Wed, 9/30102.8provisional
Tue, 9/29107.7provisional
Mon, 9/28103.3provisional
Sun, 9/2794.5provisional
Sat, 9/2687.1provisional
Fri, 9/2577.9provisional
Thu, 9/2447.2provisional
Wed, 9/2377.6provisional
Tue, 9/2275.8provisional
Mon, 9/2167.6provisional
Sun, 9/2079provisional
Sat, 9/1971.7provisional
Fri, 9/1853.5provisional
Thu, 9/1755.8provisional
Wed, 9/1696.5provisional
Tue, 9/1584.6provisional
Mon, 9/1482.9provisional
Sun, 9/1394.2provisional
Sat, 9/1286.6provisional
Fri, 9/1164.9provisional
Thu, 9/1058.6provisional
Wed, 9/999.6provisional
Tue, 9/8127.3above the limit · provisional
Mon, 9/7122.2above the limit · provisional
Last 12 months, monthly average: O₃ in µg/m³highest 91 µg/m³, latest 61 µg/m³050100150DecFebAprJunAugOcthighest 91latest 61
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 far60.638.1measured in 100 % of hours · provisional · year before: same days
September 202655.439.2measured in 100 % of hours · provisional
August 202690.661.7measured in 100 % of hours · provisional
July 202679.166measured in 100 % of hours · provisional
June 202669.585.1measured in 92 % of hours · provisional
May 20267163measured in 97 % of hours · provisional
April 202668.461.9measured in 95 % of hours · provisional
March 202654.555.7measured in 95 % of hours · provisional
February 202629.434measured in 97 % of hours · provisional
January 202630.233.4measured in 100 % of hours · provisional
December 202511.916.8measured in 96 % of hours · verified
November 202530.222.3measured 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)47259
Annual average, µg/m³61.2*47.642
Highest 8-hour average, µg/m³160August 6152June 25127July 16
Hours measured98 %96 %95 %
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 2025

DayHighest 8 hTimes the limit
Jun 25, 20251521.3 ×
Jun 23, 20251511.3 ×
Jun 24, 20251481.2 ×
Jun 26, 20251421.2 ×
Aug 14, 20251411.2 ×

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.