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Air at the Velika Gorica station

Velika Gorica, Croatia

Network: Državna mreža za trajno praćenje kvalitete zraka · Station code: HR0046A

This year, up to yesterday (October 6)

31 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.

Worst day: July 30, 2026, O₃ 154 µg/m³ as a daily average, 1.3 times the limit.

Daily average for 259 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 17:00

Latest values

Latest value: 17:00

Readings
PollutantValueLevel
NO₂5.3 µg/m³Good
O₃114.3 µg/m³Moderate

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 23.4 µg/m³, week before 18.7 µg/m³
  • O₃: average 55.8 µg/m³, week before 45.7 µg/m³

Last month there was more NO₂ in the air than the month before.

  • NO₂: average 15.9 µg/m³, month before 11.8 µg/m³
  • O₃: too few readings to compare

Show

Ozone O₃

114.3

Nowµg/m³

Measured at 17:00

44.1

Last 24 hoursµg/m³

measured in 83 % of hours · provisional

55.8

Last 7 daysµg/m³

measured in 100 % of hours · provisional

51

Last 30 daysµg/m³

measured in 100 % of hours · provisional

53.3

Last 12 monthsµg/m³

measured in 91 % of hours · provisional

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

31 days above the limit. 8 days without any reading from the station.

1102031JanFebMarAprMayMay 25: 126 µg/m³, above the limitMay 26: 125 µg/m³, above the limitMay 29: 123 µg/m³, above the limitJunJun 21: 126 µg/m³, above the limitJun 22: 121 µg/m³, above the limitJun 24: 122 µg/m³, above the limitJun 25: 126 µg/m³, above the limitJun 26: 150 µg/m³, above the limitJun 27: 139 µg/m³, above the limitJun 28: 145 µg/m³, above the limitJun 29: 135 µg/m³, above the limitJun 30: 143 µg/m³, above the limitJulJul 1: 120 µg/m³, above the limitJul 3: 133 µg/m³, above the limitJul 14: no data from the stationJul 19: 125 µg/m³, above the limitJul 26: 121 µg/m³, above the limitJul 27: 132 µg/m³, above the limitJul 30: 154 µg/m³, above the limitJul 31: 151 µg/m³, above the limitAugAug 1: 139 µg/m³, above the limitAug 2: 129 µg/m³, above the limitAug 3: 129 µg/m³, above the limitAug 4: 127 µg/m³, above the limitAug 5: 148 µg/m³, above the limitAug 6: 153 µg/m³, above the limitAug 7: 132 µg/m³, above the limitAug 12: no data from the stationAug 13: no data from the stationAug 14: no data from the stationAug 15: no data from the stationAug 16: no data from the stationAug 17: no data from the stationAug 18: no data from the stationAug 20: 130 µg/m³, above the limitAug 24: 120 µg/m³, above the limitAug 26: 124 µg/m³, above the limitAug 31: 131 µg/m³, above the limitSepSep 8: 126 µg/m³, above the limitOctNovDec
  • 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 (31)
  1. May 25 126
  2. May 26 125
  3. May 29 123
  4. Jun 21 126
  5. Jun 22 121
  6. Jun 24 122
  7. Jun 25 126
  8. Jun 26 150
  9. Jun 27 139
  10. Jun 28 145
  11. Jun 29 135
  12. Jun 30 143
  13. Jul 1 120
  14. Jul 3 133
  15. Jul 19 125
  16. Jul 26 121
  17. Jul 27 132
  18. Jul 30 154
  19. Jul 31 151
  20. Aug 1 139
  21. Aug 2 129
  22. Aug 3 129
  23. Aug 4 127
  24. Aug 5 148
  25. Aug 6 153
  26. Aug 7 132
  27. Aug 20 130
  28. Aug 24 120
  29. Aug 26 124
  30. Aug 31 131
  31. Sep 8 126

Values in µg/m³, limit 120 µg/m³.

Months of 2026

MonthDays above 120Highest 8 hNo readings
January0770
February0950
March01110
April01200
May3 above the number allowed1260
June9 above the number allowed1500
July7 above the number allowed1541
August11 above the number allowed1537
September1 above the number allowed1260
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 135 µg/m³, latest 112 µg/m³ (16:00)0100200ThuFriSatSunMonTueWedlatest 112 (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
19:0054model estimate, not counted
18:0067model estimate, not counted
17:0082model estimate, not counted
16:00112.4
15:00111.4
14:00110.3
13:00110.5
12:0093.7
11:0044.5
10:0016.2
09:0013.1
08:006.5
07:0024.1
06:0033.2
05:0036.6
04:0036.4
03:0018.4
02:0014.2
01:0011.3
Tuesday, 10/6
00:005.6
23:008.2
22:0019
21:0056.4
20:0070.2
19:0087.7
18:00127.8
17:00133.3
16:00134.7
15:00130.5
14:00119.1
13:00110.8
12:0079.3
11:0050.2
10:0027.1
09:0016.5
08:009
07:0017.7
06:0033.4
05:0044.2
04:0048.3
03:0047.1
02:0047.1
01:0040.6
Monday, 10/5
00:0035.3
23:0033.4
22:0029.8
21:0034.9
20:0030.2
19:0086.4
18:00118.1
17:00118.1
16:00119.5
15:00120.2
14:00108.8
13:0092.7
12:0057.3
11:0031.2
10:0018.9
09:0011.2
08:0011.3
07:0020.2
06:0041.4
05:0045
04:0052.4
03:0051.9
02:0053.2
01:0047.8
Sunday, 10/4
00:0039
23:0038.9
22:008.7
21:008.6
20:0040.3
19:0083.5
18:00118.8
17:00125.6
16:00126.8
15:00125.6
14:00125.5
13:00114.4
12:0095.6
11:0075.8
10:0051.2
09:0046.9
08:0041.9
07:0040
06:0039.3
05:0044.8
04:0045.9
03:0046.6
02:0041.2
01:0039.1
Saturday, 10/3
00:0039.9
23:0043.2
22:0041.6
21:0029.2
20:0051.1
19:00106.5
18:00119.4
17:00122.7
16:00120.6
15:00124
14:00120.5
13:00109.6
12:0091.2
11:0070.7
10:0043.1
09:0028.6
08:0021.8
07:0027.4
06:0027.8
05:0027.5
04:0028.9
03:0026.4
02:0026.7
01:0026.6
Friday, 10/2
00:0014.9
23:0011.5
22:0017.2
21:0020.7
20:0028
19:0083.8
18:0094.9
17:00111.1
16:00112.5
15:00109.6
14:00105
13:0097.8
12:0079
11:0069.5
10:0033.7
09:0020.8
08:0017.2
07:0027.4
06:0036.8
05:0036
04:0033.5
03:0029.2
02:0028.8
01:0020
Thursday, 10/1
00:006.9
23:005.4
22:0012.3
21:0040
20:0033.3
19:0080.8
18:00106.2
17:00108.7
16:00109.3
15:00106.5
14:00101.7
13:0097.1
12:0081.4
11:0057.6
10:0046.6
09:0019
08:0011.1
07:0013.3
06:0014.3
05:0016.8
04:0015.3
03:0012.6
02:009.9
01:009.2
Wednesday, 9/30
00:005.1
23:005.2
22:005.6
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³ · 1 day above the limithighest 126 µg/m³, latest 115 µg/m³0501001509/99/169/239/30highest 126latest 115
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, 10/6115.4provisional
Mon, 10/5102.6provisional
Sun, 10/4114.5provisional
Sat, 10/3114.3provisional
Fri, 10/299.2provisional
Thu, 10/199provisional
Wed, 9/30100.6provisional
Tue, 9/29103.3provisional
Mon, 9/28112.5provisional
Sun, 9/27102.2provisional
Sat, 9/2693.7provisional
Fri, 9/2574.4provisional
Thu, 9/2467.6provisional
Wed, 9/2377.9provisional
Tue, 9/2274.2provisional
Mon, 9/2176.7provisional
Sun, 9/2094.3provisional
Sat, 9/1998.2provisional
Fri, 9/1874provisional
Thu, 9/1756.5provisional
Wed, 9/16100.9provisional
Tue, 9/1591.4provisional
Mon, 9/1475.9provisional
Sun, 9/13105.7provisional
Sat, 9/1287.8provisional
Fri, 9/1150.7provisional
Thu, 9/1066.1provisional
Wed, 9/9110.4provisional
Tue, 9/8126above the limit · provisional
Mon, 9/7119.6provisional
Last 12 months, monthly average: O₃ in µg/m³highest 78 µg/m³, latest 57 µg/m³050100DecFebAprJunAugOcthighest 78latest 57
Last 12 monthsthis month so fara year earliermonth with days without data from the station
Last 12 months, monthly average: O₃ in µg/m³
Values as a table
Monthµg/m³a year earlierNote
October 2026 so far57.149measured in 100 % of hours · provisional · year before: same days
September 202656.242.8measured in 100 % of hours · provisional
August 2026too few readings69.6measured in 66 % of hours · provisional · 7 days without data from the station
July 202675.4too few readingsmeasured in 90 % of hours · provisional · 1 day without data from the station
June 202671measured in 96 % of hours · provisional
May 202677.5too few readingsmeasured in 99 % of hours · provisional
April 202668.870.1measured in 100 % of hours · provisional
March 20265960.6measured in 100 % of hours · provisional
February 202633.539.7measured in 99 % of hours · provisional
January 20263444.9measured in 100 % of hours · provisional
December 202513.723.4measured in 100 % of hours · verified
November 202530.425.5measured in 85 % 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)31≥ 16²25
Annual average, µg/m³61.3*too few50.3
Highest 8-hour average, µg/m³154July 30143August 13147August 1
Hours measured95 %74 %96 %
Days without any reading from the station8767

* 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.

≥ means at least: more than a tenth of the days or hours are missing, so the real number may be higher.

¹ Fewer than 90 % of the hours were measured, so we do not compare this average with the limit.

² Too few readings to compare with the number allowed: the figure covers only what was measured.

■ 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
Jul 30, 2026provisional1541.3 ×
Aug 6, 2026provisional1531.3 ×
Jul 31, 2026provisional1511.3 ×
Jun 26, 2026provisional1501.2 ×
Aug 5, 2026provisional1481.2 ×

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: 11

3 outages, 262 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

FromToDuration
Aug 11, 2026 18:00Aug 19, 2026 10:008 days
Jul 13, 2026 10:00Jul 15, 2026 14:002 days
Jun 4, 2026 09:00Jun 5, 2026 11:0026 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.

How we measure

samoEKO is a brand of samoLabs, Juelich.