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Air at the Novi Sad Liman station

Novi Sad, Serbia

Network: Agency for Environmental Protection · Station code: RS1008A

This year, up to yesterday (October 6)

72 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: 40 days above the limit, the target value allows 25 as a three-year average.

Worst day: July 17, 2026, O₃ 170 µg/m³ as a daily average, 1.4 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 21:00

Latest values

Latest value: 21:00

Readings
PollutantValueLevel
NO₂37.7 µg/m³Moderate
O₃83.5 µg/m³Fair
SO₂20.7 µg/m³Fair

How the air is changing

Over the last seven days there was more NO₂, O₃, and SO₂ in the air than the week before.

  • NO₂: average 21.8 µg/m³, week before 18.9 µg/m³
  • O₃: average 73.4 µg/m³, week before 54.4 µg/m³
  • SO₂: average 6.9 µg/m³, week before 5.9 µg/m³

Last month there was more NO₂ and less O₃ and SO₂ in the air than the month before.

  • NO₂: average 17.5 µg/m³, month before 12.9 µg/m³
  • O₃: average 71.8 µg/m³, month before 103.6 µg/m³
  • SO₂: average 7 µg/m³, month before 9.1 µg/m³

Show

Ozone O₃

83.5

Nowµg/m³

Measured at 21:00

76

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

73.4

Last 7 daysµg/m³

measured in 99 % of hours · provisional

68.5

Last 30 daysµg/m³

measured in 98 % of hours · provisional

62.6

Last 12 monthsµg/m³

measured in 98 % of hours · provisional

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

40 days above the limit.

1102031JanFebMarAprApr 30: 134 µg/m³, above the limitMayMay 1: 132 µg/m³, above the limitMay 2: 131 µg/m³, above the limitMay 3: 121 µg/m³, above the limitJunJun 5: 126 µg/m³, above the limitJun 6: 132 µg/m³, above the limitJun 11: 124 µg/m³, above the limitJun 13: 129 µg/m³, above the limitJun 14: 122 µg/m³, above the limitJun 15: 129 µg/m³, above the limitJun 16: 131 µg/m³, above the limitJun 18: 123 µg/m³, above the limitJun 22: 124 µg/m³, above the limitJun 23: 159 µg/m³, above the limitJun 25: 135 µg/m³, above the limitJun 26: 140 µg/m³, above the limitJulJul 2: 121 µg/m³, above the limitJul 4: 126 µg/m³, above the limitJul 5: 125 µg/m³, above the limitJul 6: 144 µg/m³, above the limitJul 7: 122 µg/m³, above the limitJul 13: 132 µg/m³, above the limitJul 14: 122 µg/m³, above the limitJul 21: 133 µg/m³, above the limitJul 25: 135 µg/m³, above the limitJul 26: 129 µg/m³, above the limitAugAug 2: 127 µg/m³, above the limitAug 8: 123 µg/m³, above the limitAug 9: 126 µg/m³, above the limitAug 10: 136 µg/m³, above the limitAug 13: 135 µg/m³, above the limitAug 14: 123 µg/m³, above the limitAug 16: 132 µg/m³, above the limitAug 19: 123 µg/m³, above the limitAug 20: 130 µg/m³, above the limitAug 26: 122 µg/m³, above the limitAug 27: 129 µg/m³, above the limitAug 28: 130 µg/m³, above the limitAug 29: 138 µg/m³, above the limitSepSep 4: 125 µg/m³, above the limitOctNovDec
  • above the limit
  • below the limit
  • too few readings for the day
Days above the limit with values (40)
  1. Apr 30 134
  2. May 1 132
  3. May 2 131
  4. May 3 121
  5. Jun 5 126
  6. Jun 6 132
  7. Jun 11 124
  8. Jun 13 129
  9. Jun 14 122
  10. Jun 15 129
  11. Jun 16 131
  12. Jun 18 123
  13. Jun 22 124
  14. Jun 23 159
  15. Jun 25 135
  16. Jun 26 140
  17. Jul 2 121
  18. Jul 4 126
  19. Jul 5 125
  20. Jul 6 144
  21. Jul 7 122
  22. Jul 13 132
  23. Jul 14 122
  24. Jul 21 133
  25. Jul 25 135
  26. Jul 26 129
  27. Aug 2 127
  28. Aug 8 123
  29. Aug 9 126
  30. Aug 10 136
  31. Aug 13 135
  32. Aug 14 123
  33. Aug 16 132
  34. Aug 19 123
  35. Aug 20 130
  36. Aug 26 122
  37. Aug 27 129
  38. Aug 28 130
  39. Aug 29 138
  40. Sep 4 125

Values in µg/m³, limit 120 µg/m³.

Months of 2025

MonthDays above 120Highest 8 hNo readings
January0830
February0890
March01160
April1 above the number allowed1340
May3 above the number allowed1320
June12 above the number allowed1590
July10 above the number allowed1440
August13 above the number allowed1380
September1 above the number allowed1250
October0780
November0730
December0610

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 133 µg/m³, latest 83 µg/m³ (21:00)050100150ThuFriSatSunMonTueWedlatest 83 (21:00)
measuredmodel estimate, not counted
Last 7 days, every hour: O₃ in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
21:0083.5
20:0086.1
19:00119.1
18:00125.5
17:00133.4
16:00117.2
15:00116.3
14:0077.1
13:0055.7
12:0047
11:0055model estimate, not counted
10:0018
09:0015.7
08:0039.7
07:0050.2
06:0052.6
05:0055.2
04:0065
03:0042.6
02:0069.2
01:0096.9
Tuesday, 10/6
00:00104
23:00102
22:0090.2
21:0096.1
20:0081
19:00111.7
18:00122.2
17:00124.5
16:00123.9
15:00120.2
14:00120.3
13:00112
12:0080.2
11:0034.4
10:0017.6
09:0029.3
08:0048.9
07:0060.5
06:0078.7
05:0068.6
04:0067
03:0051.8
02:0051.9
01:0084.2
Monday, 10/5
00:0087.6
23:0080.9
22:0076.8
21:0064.6
20:0052
19:0097.9
18:00114.5
17:00121.4
16:00119.9
15:00117.7
14:00109.1
13:0056.5
12:0018.5
11:0016.1
10:0020.4
09:0020.8
08:0038.9
07:0054.1
06:0041.7
05:0024.7
04:0066.3
03:0078.5
02:0077.9
01:0076.7
Sunday, 10/4
00:0067.8
23:0069.6
22:0076.7
21:0069.9
20:0061.4
19:0089.3
18:0096.2
17:00102
16:00102.3
15:00100.7
14:0097.2
13:0092.1
12:0076.7
11:0055.3
09:0049.1
08:0041.5
07:0042.3
06:0045.2
05:0047.7
04:0048
03:0055.8
02:0047.9
01:0060.2
Saturday, 10/3
00:0070.5
23:0071.8
22:0075.2
21:0074.6
20:0074.5
19:0096.7
18:00110.9
17:00109.7
16:00111.3
15:00110
14:00108.5
13:00104.4
12:0092.3
11:0045
10:0038.6
09:0029.9
08:0025.5
07:0030.9
06:0035.2
05:0036.4
04:0064.3
03:0077.2
02:0072
01:0067.3
Friday, 10/2
00:0075
23:0075.3
22:0071.6
21:0058
20:0075.4
19:00103
18:00114.9
17:00113.6
16:00105.7
15:00103.1
14:00103.5
13:0098.3
12:0085.5
11:0073.6
10:0064.6
09:0047.4
08:0042
07:0066.9
06:0075.6
05:0051.6
04:0032.3
03:0015.1
02:006.8
01:0019.2
Thursday, 10/1
00:0064
23:0073.1
22:0067.6
21:0061
20:0080.8
19:0097
18:00103
17:00103.7
16:0099.9
15:0097.6
14:0095.5
13:0089.1
12:0084.9
11:0077.7
10:0058.9
08:0045.3
07:0057.7
06:0059.2
05:0057
04:0081.5
03:0087.5
02:0086.5
01:0085.4
Wednesday, 9/30
00:0070.3
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³ · 5 days above the limithighest 157 µg/m³, latest 114 µg/m³01002009/99/169/239/30highest 157latest 114
day above the limittarget value, 120 µg/m³
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³ · 5 days above the limit
Values as a table
Dayµg/m³Note
Tue, 10/6114.5provisional
Mon, 10/599.6provisional
Sun, 10/494.6provisional
Sat, 10/3105.5provisional
Fri, 10/2103.4provisional
Thu, 10/196.3provisional
Wed, 9/3094.8provisional
Tue, 9/2995.7provisional
Mon, 9/2891.3provisional
Sun, 9/2799.3provisional
Sat, 9/2688.2provisional
Fri, 9/2563.2provisional
Thu, 9/2475.7provisional
Wed, 9/2360.3provisional
Tue, 9/2263.1provisional
Mon, 9/21104.9provisional
Sun, 9/20131.2above the limit · provisional
Sat, 9/19107provisional
Fri, 9/1892provisional
Thu, 9/17117.8provisional
Wed, 9/16132.8above the limit · provisional
Tue, 9/1597.9provisional
Mon, 9/1487.5provisional
Sun, 9/13102.8provisional
Sat, 9/1294.2provisional
Fri, 9/1170.8provisional
Thu, 9/10122.8above the limit · provisional
Wed, 9/9157.5above the limit · provisional
Tue, 9/8134.4above the limit · provisional
Mon, 9/7102.4provisional
Last 12 months, monthly average: O₃ in µg/m³highest 104 µg/m³, latest 73 µg/m³050100150DecFebAprJunAugOcthighest 104latest 73
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 far73.533.5measured in 99 % of hours · provisional · year before: same days
September 202671.862.7measured in 98 % of hours · provisional
August 2026103.686.4measured in 99 % of hours · provisional
July 202691.384.2measured in 99 % of hours · provisional
June 20268389.9measured in 98 % of hours · provisional
May 202684.673measured in 99 % of hours · provisional
April 202673.367.7measured in 99 % of hours · provisional
March 202652.159.9measured in 98 % of hours · provisional
February 20264545.3measured in 94 % of hours · provisional
January 202641.335.9measured in 99 % of hours · provisional
December 202523.124.7measured in 99 % of hours · verified
November 202529.530.4measured 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)724048
Annual average, µg/m³72.2*58.362
Highest 8-hour average, µg/m³170July 17159June 23165August 18
Hours measured98 %98 %98 %
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 23, 20251591.3 ×
Jul 6, 20251441.2 ×
Jun 26, 20251401.2 ×
Aug 29, 20251381.2 ×
Aug 10, 20251361.1 ×

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: 3

2 outages, 63 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

FromToDuration
Feb 12, 2026 09:00Feb 13, 2026 18:0033 hours
Nov 11, 2025 10:00Nov 12, 2025 16:0030 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 Agency for Environmental Protection. 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.