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Air at the Niksic2 station

Nikšić, Montenegro

Network: Environmental Protection Agency of Montenegro · Station code: ME0009A

This year, up to yesterday (October 6)

at least

42 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.

22 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: September 9, 2026, O₃ 150 µg/m³ as a daily average, 1.2 times the limit.

Daily average for 132 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
PM1038 µg/m³Fair
NO₂47.8 µg/m³Moderate
O₃55.8 µg/m³Good
SO₂11.3 µg/m³Good

How the air is changing

Over the last seven days there was more PM10, PM2.5, NO₂, and SO₂ in the air than the week before.

  • PM10: average 17.3 µg/m³, week before 8.3 µg/m³
  • PM2.5: average 11.6 µg/m³, week before 5.7 µg/m³
  • NO₂: average 13.2 µg/m³, week before 6.5 µg/m³
  • O₃: average 73.2 µg/m³, week before 72.8 µg/m³
  • SO₂: average 14.4 µg/m³, week before 12.1 µg/m³

Last month there was more PM2.5 and SO₂ and less PM10 and O₃ in the air than the month before.

  • PM10: average 26.2 µg/m³, month before 30 µg/m³
  • PM2.5: average 19.6 µg/m³, month before 16.2 µg/m³
  • NO₂: average 7.7 µg/m³, month before 7.7 µg/m³
  • O₃: average 83.5 µg/m³, month before 103.1 µg/m³
  • SO₂: average 22 µg/m³, month before 4.5 µg/m³

Show

Ozone O₃

55.8

Nowµg/m³

Measured at 21:00

74.4

Last 24 hoursµg/m³

measured in 96 % of hours · provisional

73.2

Last 7 daysµg/m³

measured in 100 % of hours · provisional

79.3

Last 30 daysµg/m³

measured in 100 % of hours · provisional

too few readings

Last 12 months

measured in 67 % of hours · provisional

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

7 days above the limit. 7 days without any reading from the station.

1102031JanFebMarAprMayJunJun 10: 122 µg/m³, above the limitJun 13: 125 µg/m³, above the limitJun 14: 121 µg/m³, above the limitJun 15: 120 µg/m³, above the limitJun 22: 121 µg/m³, above the limitJun 27: 162 µg/m³, above the limitJun 28: 164 µg/m³, above the limitJulAugSepOctNovNov 26: no data from the stationNov 27: no data from the stationNov 28: no data from the stationNov 29: no data from the stationNov 30: no data from the stationDecDec 1: no data from the stationDec 2: no data from the station
  • 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 (7)
  1. Jun 10 122
  2. Jun 13 125
  3. Jun 14 121
  4. Jun 15 120
  5. Jun 22 121
  6. Jun 27 162
  7. Jun 28 164

Values in µg/m³, limit 120 µg/m³.

Months of 2025

MonthDays above 120Highest 8 hNo readings
January0760
February0880
March01050
April0950
May01100
June7 above the number allowed1640
July0
August0
September0
October0810
November0725
December0782

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 127 µg/m³, latest 56 µg/m³ (21:00)050100150ThuFriSatSunMonTueWedlatest 56 (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
22:0056model estimate, not counted
21:0055.8
20:0082
19:00107.4
18:00118.6
17:00118.8
16:00117.4
15:00113.1
14:00110.2
13:00109.7
12:0093.3
11:0064.1
10:0034.7
09:0021.2
08:0024.4
07:0041.8
06:0047.5
05:0055.2
04:0054.1
03:0062.8
02:0067
01:0060
Tuesday, 10/6
00:0069.8
23:0082
22:0074.8
21:0076.5
20:0053.4
19:00113.5
18:00122
17:00126.6
16:00121.6
15:00121.3
14:00111.1
13:00113.4
12:0095.8
11:0061.1
10:0025.1
09:0015.8
08:0021.3
07:0039.6
06:0039.8
05:0051.2
04:0048.7
03:0049.4
02:0058.7
01:0055
Monday, 10/5
00:0064.1
23:0068.4
22:0067.6
21:0050.4
20:0090.5
19:00100.4
18:00110.2
17:00111
16:00111.5
15:00110.5
14:00107.2
13:00110.2
12:0091.3
11:0059.1
10:0033.7
09:0011.9
08:0013.4
07:0027.6
06:0037.5
05:0044.3
04:0046.6
03:0056
02:0062.8
01:0061.8
Sunday, 10/4
00:0058.7
23:0077.6
22:0068.6
21:0044.6
20:0086
19:00100.7
18:00103.1
17:00102.4
16:00101.8
15:00104.9
14:00105.2
13:00101
12:0086.7
11:0069.7
10:0054.9
09:0031
08:0023.6
07:0033.1
06:0047.8
05:0052.5
04:0056.1
03:0058.5
02:0061.6
01:0046.2
Saturday, 10/3
00:0039.9
23:0037.1
22:0039
21:0063.6
20:0094.8
19:00101.5
18:00101.3
17:00101.7
16:0098
15:0097.5
14:0099.8
13:0098.4
12:0090.2
11:0064.9
10:0065.1
09:0055.5
08:0068.7
07:0068.2
06:0069.2
05:0068.7
04:0076.9
03:0085.8
02:0098
01:0095.4
Friday, 10/2
00:00100.5
23:00102.3
22:0096.8
21:0089.8
20:0088.7
19:0096.9
18:0098.2
17:00100.9
16:00101.5
15:00100.5
14:0095.2
13:0084.6
12:0066
11:0052.5
10:0049.2
09:0033.9
08:0047.3
07:0063.2
06:0063.1
05:0064
04:0082.5
03:0072.7
02:0071.6
01:0053.4
Thursday, 10/1
00:0061.3
23:0057.3
22:0059.1
21:0061.1
20:0066.1
19:0091.7
18:0098.8
17:00100.6
16:0098
15:0098.5
14:00100.5
13:0093.5
12:0083.8
11:0069.6
10:0064
09:0034.4
08:0040
07:0051.4
06:0057.2
05:0060.4
04:0057.7
03:0060.4
02:0058.5
01:0059.1
Wednesday, 9/30
00:0080.7
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³ · 4 days above the limithighest 150 µg/m³, latest 116 µg/m³0501001509/99/169/239/30highest 150latest 116
day above the limittarget value, 120 µg/m³
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³ · 4 days above the limit
Values as a table
Dayµg/m³Note
Tue, 10/6115.6provisional
Mon, 10/5106.5provisional
Sun, 10/4100.7provisional
Sat, 10/399.1provisional
Fri, 10/296.9provisional
Thu, 10/195.7provisional
Wed, 9/3093.7provisional
Tue, 9/2996provisional
Mon, 9/2895.6provisional
Sun, 9/2786.5provisional
Sat, 9/2680.4provisional
Fri, 9/2575provisional
Thu, 9/2485.2provisional
Wed, 9/2382.5provisional
Tue, 9/2289.5provisional
Mon, 9/21108.3provisional
Sun, 9/20112.3provisional
Sat, 9/1994.9provisional
Fri, 9/18102provisional
Thu, 9/17104provisional
Wed, 9/1694.2provisional
Tue, 9/1590.5provisional
Mon, 9/1498.5provisional
Sun, 9/13101.2provisional
Sat, 9/1283.5provisional
Fri, 9/11107provisional
Thu, 9/10136.6above the limit · provisional
Wed, 9/9149.5above the limit · provisional
Tue, 9/8137.7above the limit · provisional
Mon, 9/7128.3above the limit · provisional
Last 12 months, monthly average: O₃ in µg/m³highest 103 µg/m³, latest 73 µg/m³050100150DecFebAprJunAugOcthighest 103latest 73
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 far7357.3measured in 100 % of hours · provisional · year before: same days
September 202683.5measured in 100 % of hours · provisional
August 2026103.1measured in 90 % of hours · provisional · 2 days without data from the station
July 202689.1measured in 100 % of hours · provisional
June 2026too few readings87.7measured in 74 % of hours · provisional · 2 days without data from the station
May 2026too few readings69.8measured in 39 % of hours · provisional · 1 day without data from the station
April 2026too few readings65measured in 26 % of hours · provisional
March 2026too few readings58.4measured in 32 % of hours · provisional
February 2026too few readings45.9measured in 40 % of hours · provisional
January 2026too few readings39.6measured in 33 % of hours · provisional · 3 days without data from the station
December 202528.738.5measured in 92 % of hours · verified · 2 days without data from the station
November 202536.840.5measured in 80 % of hours · verified · 5 days without data from the station

O₃ by year

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

Measure2026*20252024
Days with 8-hour average above 120 µg/m³ (target value 25)≥ 42≥ 7²0²
Annual average, µg/m³too fewtoo fewtoo few
Highest 8-hour average, µg/m³150September 9164June 2888November 10
Hours measured60 %72 %41 %
Days without any reading from the station8731

* 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.

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 worst days of 2025

DayHighest 8 hTimes the limit
Jun 28, 20251641.4 ×
Jun 27, 20251621.3 ×
Jun 13, 20251251.0 ×
Jun 10, 20251221.0 ×
Jun 22, 20251211.0 ×

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: 22

7 outages, 518 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

FromToDuration
Aug 15, 2026 09:00Aug 18, 2026 14:003 days
Jun 24, 2026 16:00Jun 26, 2026 11:0043 hours
Jun 16, 2026 15:00Jun 18, 2026 11:0044 hours
May 16, 2026 06:00May 18, 2026 12:002 days
Jan 6, 2026 19:00Jan 9, 2026 10:003 days
Jan 4, 2026 22:00Jan 6, 2026 13:0039 hours
Nov 25, 2025 03:00Dec 3, 2025 09:008 days

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 Environmental Protection Agency of Montenegro. 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.