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Air at the Ivan Sedlo station

Hadžići, Sarajevo Canton · Federation of Bosnia and Herzegovina

Network: Federal Hydrometeorological Institute · Station code: BA0001G

This year, up to yesterday (October 6)

at least

59 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: 68 days above the limit, the target value allows 25 as a three-year average.

at least

10 days

with a daily average of particulate matter PM10 above the legal limit of 50 µg/m³.

Readings are missing for part of the period, so the real number may be higher.

Worst day: August 11, 2026, O₃ 163 µg/m³ as a daily average, 1.4 times the limit.

Daily average for 219 of 279 days · data for 2026 not yet finally verified · Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)

All figures by year and month

Poor

Air now · Measured at 21:00

Latest values

Latest value: 21:00

Readings
PollutantValueLevel
PM1011.7 µg/m³Good
O₃124.1 µg/m³Poor
SO₂7.9 µg/m³Good

How the air is changing

Over the last seven days there was more PM10, O₃, and SO₂ in the air than the week before.

  • PM10: average 13.7 µg/m³, week before 10.4 µg/m³
  • NO₂: too few readings to compare
  • O₃: average 88 µg/m³, week before 63.6 µg/m³
  • SO₂: average 12.3 µg/m³, week before 10.4 µg/m³

There are not enough readings to compare with the month before.

  • PM10: too few readings to compare
  • NO₂: too few readings to compare
  • O₃: too few readings to compare
  • SO₂: too few readings to compare

Show

Ozone O₃

124.1

Nowµg/m³

Measured at 21:00

105.1

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

88

Last 7 daysµg/m³

measured in 100 % of hours · provisional

too few readings

Last 30 days

measured in 49 % of hours · provisional

too few readings

Last 12 months

measured in 86 % of hours · 1 month with too few readings · provisional

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

59 days above the limit. 29 days without any reading from the station.

1102031JanJan 10: no data from the stationJan 27: no data from the stationFebMarMar 6: 121 µg/m³, above the limitMar 8: 125 µg/m³, above the limitMar 15: 120 µg/m³, above the limitMar 16: 126 µg/m³, above the limitMar 25: 125 µg/m³, above the limitMar 26: 127 µg/m³, above the limitAprApr 5: no data from the stationApr 6: no data from the stationApr 8: 122 µg/m³, above the limitApr 11: no data from the stationApr 12: no data from the stationApr 14: 124 µg/m³, above the limitApr 18: 125 µg/m³, above the limitApr 19: 136 µg/m³, above the limitApr 20: 138 µg/m³, above the limitApr 23: 123 µg/m³, above the limitApr 24: 126 µg/m³, above the limitApr 25: 146 µg/m³, above the limitApr 26: 143 µg/m³, above the limitApr 28: 144 µg/m³, above the limitApr 29: 131 µg/m³, above the limitMayMay 1: 123 µg/m³, above the limitMay 3: 127 µg/m³, above the limitMay 4: 127 µg/m³, above the limitMay 5: 136 µg/m³, above the limitMay 6: 133 µg/m³, above the limitMay 7: 123 µg/m³, above the limitMay 14: 128 µg/m³, above the limitMay 15: 126 µg/m³, above the limitMay 20: 122 µg/m³, above the limitMay 25: 123 µg/m³, above the limitMay 26: 137 µg/m³, above the limitMay 27: 123 µg/m³, above the limitMay 29: 120 µg/m³, above the limitMay 30: 122 µg/m³, above the limitJunJun 10: no data from the stationJun 25: 123 µg/m³, above the limitJun 26: 132 µg/m³, above the limitJun 27: 150 µg/m³, above the limitJun 28: 144 µg/m³, above the limitJun 30: 122 µg/m³, above the limitJulJul 5: 122 µg/m³, above the limitJul 18: no data from the stationJul 19: no data from the stationJul 26: 126 µg/m³, above the limitJul 27: 125 µg/m³, above the limitJul 31: 126 µg/m³, above the limitAugAug 1: 122 µg/m³, above the limitAug 4: 122 µg/m³, above the limitAug 5: 139 µg/m³, above the limitAug 6: 139 µg/m³, above the limitAug 7: 148 µg/m³, above the limitAug 8: 132 µg/m³, above the limitAug 9: 130 µg/m³, above the limitAug 10: 137 µg/m³, above the limitAug 11: 163 µg/m³, above the limitAug 12: 161 µg/m³, above the limitAug 13: 148 µg/m³, above the limitAug 14: 144 µg/m³, above the limitAug 15: 136 µg/m³, above the limitAug 16: 129 µg/m³, above the limitAug 20: 122 µg/m³, above the limitAug 21: 127 µg/m³, above the limitAug 22: 121 µg/m³, above the limitAug 23: 125 µg/m³, above the limitAug 24: 132 µg/m³, above the limitSepSep 2: no data from the stationSep 3: no data from the stationSep 4: no data from the stationSep 5: no data from the stationSep 6: no data from the stationSep 7: no data from the stationSep 8: no data from the stationSep 9: no data from the stationSep 10: no data from the stationSep 11: no data from the stationSep 12: no data from the stationSep 13: no data from the stationSep 14: no data from the stationSep 15: no data from the stationSep 16: no data from the stationSep 17: no data from the stationSep 18: no data from the stationSep 19: no data from the stationSep 20: no data from the stationSep 21: no data from the stationOctNovDec
  • 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 (59)
  1. Mar 6 121
  2. Mar 8 125
  3. Mar 15 120
  4. Mar 16 126
  5. Mar 25 125
  6. Mar 26 127
  7. Apr 8 122
  8. Apr 14 124
  9. Apr 18 125
  10. Apr 19 136
  11. Apr 20 138
  12. Apr 23 123
  13. Apr 24 126
  14. Apr 25 146
  15. Apr 26 143
  16. Apr 28 144
  17. Apr 29 131
  18. May 1 123
  19. May 3 127
  20. May 4 127
  21. May 5 136
  22. May 6 133
  23. May 7 123
  24. May 14 128
  25. May 15 126
  26. May 20 122
  27. May 25 123
  28. May 26 137
  29. May 27 123
  30. May 29 120
  31. May 30 122
  32. Jun 25 123
  33. Jun 26 132
  34. Jun 27 150
  35. Jun 28 144
  36. Jun 30 122
  37. Jul 5 122
  38. Jul 26 126
  39. Jul 27 125
  40. Jul 31 126
  41. Aug 1 122
  42. Aug 4 122
  43. Aug 5 139
  44. Aug 6 139
  45. Aug 7 148
  46. Aug 8 132
  47. Aug 9 130
  48. Aug 10 137
  49. Aug 11 163
  50. Aug 12 161
  51. Aug 13 148
  52. Aug 14 144
  53. Aug 15 136
  54. Aug 16 129
  55. Aug 20 122
  56. Aug 21 127
  57. Aug 22 121
  58. Aug 23 125
  59. Aug 24 132

Values in µg/m³, limit 120 µg/m³.

Months of 2026

MonthDays above 120Highest 8 hNo readings
January01122
February01120
March6 above the number allowed1270
April11 above the number allowed1464
May14 above the number allowed1370
June5 above the number allowed1501
July4 above the number allowed1262
August19 above the number allowed1630
September010520
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 124 µg/m³ (21:00)050100150ThuFriSatSunMonTueWedhighest 130latest 124 (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
22:0063model estimate, not counted
21:00124.1
20:00123
19:00121.1
18:00121.9
17:00122.2
16:00121.5
15:00120.7
14:00119.1
13:00112.4
12:00107.3
11:00102.3
10:0098.5
09:0090.3
08:0070.8
07:0083.4
06:0082.4
05:0086
04:0091.6
03:0093.1
02:0096.7
01:0097.8
Tuesday, 10/6
00:00125.2
23:0098.8
22:00102.8
21:00104.3
20:00105.3
19:00103.7
18:00112.7
17:00129.6
16:00123.9
15:00121
14:00115.5
13:00106.5
12:0098.3
11:0096
10:0090.1
09:0076.2
08:0073.8
07:0080.7
06:0080.5
05:0086.3
04:0091.1
03:0089.8
02:0096.7
01:0096
Monday, 10/5
00:0097.8
23:00121.2
22:0094.5
21:0094.3
20:0098
19:0094.1
18:0097.3
17:00103
16:00108.2
15:00105.3
14:00108.6
13:00105.7
12:00100.1
11:0081.9
10:0081.2
09:0068.2
08:0071
07:0075.1
06:0077.4
05:0077.9
04:0082.7
03:0082.6
02:0085.1
01:0091.4
Sunday, 10/4
00:0090.6
23:0091.6
22:0093.4
21:0099.5
20:0096.4
19:0095.5
18:0092.4
17:00107.2
16:00108.6
15:00108
14:00105.2
13:0097.7
12:0091.4
11:0082.9
10:0078.3
09:0075.8
08:0074.9
07:0077.3
06:00103.9
05:0082.2
04:0079.5
03:0081.9
02:0081.5
01:0085.8
Saturday, 10/3
00:0081.5
23:0090.5
22:0090.4
21:0089.9
20:0094.8
19:0095
18:0098.6
17:00109.1
16:00107.5
15:00105.3
14:00103
13:00101.6
12:0098.5
11:0091.2
10:0075.9
09:0073.8
08:0076.1
07:0076.8
06:0080.2
05:0083.2
04:0080.3
03:0078.3
02:0081.5
01:0085
Friday, 10/2
00:0086.3
23:0087.7
22:0087
21:0088.3
20:0092
19:0096.5
18:0099.9
17:00110.9
16:00110.6
15:00107.2
14:00101.7
13:0092.9
12:0086.4
11:0083.4
10:0066.4
09:0068.9
08:0065.4
07:0064.2
06:0067.9
05:0069
04:0097.2
03:0069.7
02:0072.6
01:0073.6
Thursday, 10/1
00:0075.5
23:0078.7
22:0082.8
21:0082.4
20:0085.5
19:0086.6
18:0099.2
17:00106.8
16:00105.4
15:00100.3
14:0096.1
13:0089.4
12:0083.8
11:0074.4
10:0063.6
09:0063.5
08:0052.7
07:0056.9
06:0059.1
05:0058.2
04:0061.3
03:0091.7
02:0066.2
01:0065.3
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³highest 115 µg/m³, latest 115 µg/m³0501001509/99/169/239/30highest 115
too few readingstarget value, 120 µg/m³no data from the station
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³
Values as a table
Dayµg/m³Note
Tue, 10/6114.8provisional
Mon, 10/5102.8provisional
Sun, 10/4101.6provisional
Sat, 10/3102.3provisional
Fri, 10/2101.5provisional
Thu, 10/196.2provisional
Wed, 9/3093.2provisional
Tue, 9/29105provisional
Mon, 9/28100.5provisional
Sun, 9/2779.9provisional
Sat, 9/2662.5provisional
Fri, 9/2580.9provisional
Thu, 9/2490.6provisional
Wed, 9/2372.8provisional
Tue, 9/22too few readings
Mon, 9/21no data from the station
Sun, 9/20no data from the station
Sat, 9/19no data from the station
Fri, 9/18no data from the station
Thu, 9/17no data from the station
Wed, 9/16no data from the station
Tue, 9/15no data from the station
Mon, 9/14no data from the station
Sun, 9/13no data from the station
Sat, 9/12no data from the station
Fri, 9/11no data from the station
Thu, 9/10no data from the station
Wed, 9/9no data from the station
Tue, 9/8no data from the station
Mon, 9/7no data from the station
Last 12 months, monthly average: O₃ in µg/m³highest 106 µg/m³, latest 89 µg/m³050100150DecFebAprJunAugOcthighest 106latest 89
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 far89.464.1measured in 100 % of hours · provisional · year before: same days
September 2026too few readings68.6measured in 30 % of hours · provisional · 20 days without data from the station
August 202610697.6measured in 97 % of hours · provisional
July 2026too few readings99.5measured in 62 % of hours · provisional · 2 days without data from the station
June 202689106.8measured in 92 % of hours · provisional · 1 day without data from the station
May 202699.195measured in 94 % of hours · provisional
April 202699.493.2measured in 79 % of hours · provisional · 4 days without data from the station
March 202691.995.7measured in 100 % of hours · provisional
February 202681.178.2measured in 99 % of hours · provisional
January 20267374.7measured in 87 % of hours · provisional · 2 days without data from the station
December 202545.556.7measured in 100 % of hours · verified
November 202559.657.4measured in 98 % of hours · verified

O₃ by year

Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)

Measure2026*20252024
Days with 8-hour average above 120 µg/m³ (target value 25)≥ 5968164
Annual average, µg/m³too few81.694.2
Highest 8-hour average, µg/m³163August 11151June 24194August 16
Hours measured83 %100 %96 %
Days without any reading from the station2909

* 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.

■ 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 11, 2026provisional1631.4 ×
Aug 12, 2026provisional1611.3 ×
Jun 27, 2026provisional1501.3 ×
Aug 13, 2026provisional1481.2 ×
Aug 7, 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: 39

9 outages, 938 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

FromToDuration
Sep 1, 2026 09:00Sep 22, 2026 09:0021 days
Jul 17, 2026 10:00Jul 20, 2026 23:004 days
Jul 1, 2026 09:00Jul 2, 2026 09:0024 hours
Jun 9, 2026 05:00Jun 11, 2026 11:002 days
May 23, 2026 01:00May 24, 2026 08:0031 hours
Apr 10, 2026 04:00Apr 13, 2026 11:003 days
Apr 4, 2026 12:00Apr 7, 2026 09:003 days
Jan 26, 2026 15:00Jan 28, 2026 14:0047 hours
Jan 9, 2026 14:00Jan 11, 2026 11:0045 hours

Calculated from the hourly values the EEA publishes. If late values arrive afterwards, an outage gets shorter or disappears.

Who is responsible

Air quality in the Federation of BiH is monitored by three networks of stations: the federal, the cantonal and the municipal one (Air Protection Act, Official Gazette FBiH 72/24, Art. 12 to 16).

Federal Hydrometeorological Institute (FHMZ)
Runs the federal network, collects the data of all networks and publishes it. It issues a report every month and, every year by 31 July, the annual air quality report (Art. 14, 19 and 63).
Canton
Sets up the cantonal network and is responsible for the measures. When limit values are exceeded, it adopts an air quality plan. When warning or alert thresholds are at risk of being exceeded, it adopts a short-term intervention plan. When the information threshold or a concentration dangerous to health is exceeded, it informs the public (Art. 15, 22, 25, 27 and 61).
Municipality
May run its own stations with the consent of the canton and must publish their results (Art. 16 and 17).
Inspectorates
The inspectorates of the Federation, the canton and the municipality supervise the law and the measures, each within its remit (Art. 71).

What the law requires when a limit is exceeded

A limit value is not a recommendation. The deadline for meeting the limit values for sulphur dioxide, nitrogen dioxide and particulate matter expired on 1 January 2021. Since then only the number of exceedances that the Pravilnik allows applies (Official Gazette FBiH 1/12, Annex X). The Air Protection Act adds that limit values, once met, must not be exceeded again (Art. 5(4)).

The law allows: for PM10 at most 35 days a year above 50 µg/m³, for sulphur dioxide at most 24 hours above 350 µg/m³ and at most 3 days above 125 µg/m³, for nitrogen dioxide at most 18 hours above 200 µg/m³ and no day with a daily average above 85 µg/m³ (Annex X).

When limits are exceeded, the canton adopts an air quality plan with measures that shorten the period of exceedance. The plan is published within eight days of adoption (Art. 8, 25, 26 and 63).

The alert thresholds are 500 µg/m³ for sulphur dioxide and 400 µg/m³ for nitrogen dioxide over three hours in a row, and 300 µg/m³ for PM10 and 280 µg/m³ for PM2.5 as a daily average (Pravilnik, Annex XIV, amended in Official Gazette FBiH 3/21). When such a situation threatens, the canton must have a short-term intervention plan. It can restrict traffic, construction work, the operation of plants and heating (Art. 27 and 28).

When the information threshold or a concentration dangerous to health is exceeded, the competent cantonal authorities inform the public through radio, television, newspapers and the internet: where, since when, how much was measured, what is expected and how to protect oneself (Art. 61 and 62).

We show measured values only. Whether an episode has been declared is decided by the competent authorities, who publish it on their own pages.

The limit values in BiH match the EU rules of 2008. Since 2021 the World Health Organization has recommended much lower values, for PM10 45 µg/m³ a day and 15 µg/m³ a year. From 2030 the EU lowers the annual PM10 limit to 20 µg/m³ (Directive (EU) 2024/2881).

We checked the rules against the published texts on 7 October 2026.

Where the data comes from

Measured by Federal Hydrometeorological Institute. 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 limits are the legal limits of the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19 and 3/21, Annexes X and XIV). They match EU Directive 2008/50/EC. 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

Other stations in Hadžići

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