Air at the Sarajevo - Ilijas station
Ilijaš, Sarajevo Canton · Federation of Bosnia and Herzegovina
Network: Federal Hydrometeorological Institute · Station code: BA0050A
This year, up to yesterday (October 6)
at least
48 days
with a daily average of particulate matter PM10 above the legal limit of 50 µg/m³.
35 days are allowed in the whole year.
The number allowed for the whole year has been exceeded.at least 13 days more than allowed
In 2025: 86 days above the limit, 35 allowed.
at least
4 days
with a daily average of sulphur dioxide (SO₂) above the legal limit of 125 µg/m³.
3 days are allowed in the whole year.
The number allowed for the whole year has been exceeded.at least 1 day more than allowed
Worst day: January 23, 2026, PM10 293 µg/m³ as a daily average, 5.9 times the limit.
SO₂ was above the alert threshold of 500 µg/m³ for at least 6 hours, three or more hours in a row (on 2 days).
At least 8 days with a daily average of PM10 above 150 µg/m³, the warning threshold in the Federation of BiH.
These are measured values only. Whether a warning or alert episode has been declared is decided and published by the competent authorities.
Also: at least 24 hours above the legal hourly limit for SO₂ of 350 µg/m³ (too few readings to compare with the allowed number).
Daily average for 225 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)
Moderate
Air now · Measured at 21:00
Latest values
Latest value: 21:00
| Pollutant | Value | Level |
|---|---|---|
| PM10 | 37.9 µg/m³ | Fair |
| NO₂ | 50.2 µg/m³ | Moderate |
| SO₂ | 3.9 µg/m³ | Good |
How the air is changing
Over the last seven days there was more PM10 and NO₂ and less SO₂ in the air than the week before.
- PM10: average 31 µg/m³, week before 27.7 µg/m³
- NO₂: average 19.1 µg/m³, week before 14.9 µg/m³
- SO₂: average 8.9 µg/m³, week before 24.2 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
- SO₂: too few readings to compare
Show
Particulate matter PM10
37.9
Nowµg/m³
Measured at 21:00
31.1
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
31
Last 7 daysµg/m³
measured in 91 % of hours · provisional
too few readings
Last 30 days
measured in 47 % of hours · provisional
too few readings
Last 12 months
measured in 87 % of hours · 1 month with too few readings · provisional
Days in 2023: PM10, daily average above 50 µg/m³
116 days above the limit.
- above the limit
- below the limit
- too few readings for the day
- no PM10 data in the EEA database
Days above the limit with values (116)
- Jan 1 168
- Jan 2 205
- Jan 3 180
- Jan 4 224
- Jan 5 153
- Jan 6 163
- Jan 8 111
- Jan 12 93
- Jan 13 103
- Jan 14 145
- Jan 15 93
- Jan 16 87
- Jan 22 101
- Jan 23 146
- Jan 24 157
- Jan 25 89
- Jan 30 69
- Jan 31 110
- Feb 1 93
- Feb 2 166
- Feb 3 73
- Feb 4 85
- Feb 8 74
- Feb 9 101
- Feb 10 108
- Feb 11 132
- Feb 12 232
- Feb 13 174
- Feb 14 154
- Feb 15 124
- Feb 16 143
- Feb 17 103
- Feb 18 104
- Feb 19 62
- Feb 20 71
- Feb 21 74
- Feb 22 79
- Feb 23 86
- Feb 24 73
- Feb 25 50
- Feb 28 50
- Mar 1 81
- Mar 2 131
- Mar 3 149
- Mar 4 157
- Mar 5 89
- Mar 6 78
- Mar 8 62
- Mar 17 70
- Mar 18 70
- Mar 19 62
- Mar 20 53
- Mar 21 61
- Mar 22 68
- Mar 25 53
- Mar 30 51
- Mar 31 51
- Apr 7 71
- Apr 11 56
- Apr 12 56
- Apr 13 69
- May 5 57
- Jun 23 65
- Jul 6 51
- Jul 12 54
- Jul 14 51
- Jul 25 56
- Jul 26 51
- Aug 17 62
- Aug 18 59
- Aug 21 50
- Sep 19 51
- Sep 23 52
- Oct 6 50
- Oct 10 58
- Oct 18 58
- Oct 19 76
- Nov 7 57
- Nov 10 86
- Nov 12 70
- Nov 13 111
- Nov 14 51
- Nov 19 51
- Nov 20 149
- Nov 21 195
- Nov 22 66
- Nov 23 78
- Nov 24 90
- Nov 27 98
- Nov 28 85
- Nov 29 66
- Nov 30 82
- Dec 4 73
- Dec 5 127
- Dec 6 100
- Dec 7 58
- Dec 8 80
- Dec 9 127
- Dec 10 184
- Dec 11 119
- Dec 12 206
- Dec 13 63
- Dec 17 85
- Dec 18 177
- Dec 19 166
- Dec 20 144
- Dec 21 277
- Dec 23 91
- Dec 24 72
- Dec 25 50
- Dec 26 71
- Dec 27 98
- Dec 28 125
- Dec 29 175
- Dec 30 177
- Dec 31 183
Values in µg/m³, limit 50 µg/m³.
Months of 2023
| Month | Days above 50 | Highest day | No readings |
|---|---|---|---|
| January | 18 above the number allowed | 224 | 0 |
| February | 23 above the number allowed | 232 | 0 |
| March | 16 above the number allowed | 157 | 0 |
| April | 4 above the number allowed | 71 | 0 |
| May | 1 above the number allowed | 57 | 0 |
| June | 1 above the number allowed | 65 | 0 |
| July | 5 above the number allowed | 56 | 0 |
| August | 3 above the number allowed | 62 | 0 |
| September | 2 above the number allowed | 52 | 0 |
| October | 4 above the number allowed | 76 | 0 |
| November | 15 above the number allowed | 195 | 0 |
| December | 24 above the number allowed | 277 | 0 |
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.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 22:00 | 91 | model estimate, not counted |
| 21:00 | 37.9 | |
| 20:00 | 23.2 | |
| 19:00 | 39.1 | |
| 18:00 | 24.1 | |
| 17:00 | 14.9 | |
| 16:00 | 21.1 | |
| 15:00 | 18.1 | |
| 14:00 | 26.4 | |
| 13:00 | 33.5 | |
| 12:00 | 35.9 | |
| 11:00 | 34.8 | |
| 10:00 | 46.9 | |
| 09:00 | 43.2 | |
| 08:00 | 34 | |
| 07:00 | 28.3 | |
| 06:00 | 27.7 | |
| 05:00 | 29.3 | |
| 04:00 | 23 | |
| 03:00 | 30.3 | |
| 02:00 | 35 | |
| 01:00 | 35.7 | |
| Tuesday, 10/6 | ||
| 00:00 | 42.8 | |
| 23:00 | 44.5 | |
| 22:00 | 60.1 | |
| 21:00 | 69.1 | |
| 20:00 | 64.1 | |
| 19:00 | 33 | |
| 18:00 | 25.6 | |
| 17:00 | 13.9 | |
| 16:00 | 20.7 | |
| 15:00 | 23.3 | |
| 14:00 | 23.8 | |
| 13:00 | 51.6 | |
| 12:00 | 33.7 | |
| 11:00 | 34.6 | |
| 10:00 | 35.6 | |
| 09:00 | 31.5 | |
| 08:00 | 34.3 | |
| 07:00 | 24.3 | |
| 06:00 | 28.1 | |
| 05:00 | 33.1 | |
| 04:00 | 50.1 | |
| 03:00 | 55.5 | |
| 02:00 | 50.7 | |
| 01:00 | 59.4 | |
| Monday, 10/5 | ||
| 00:00 | 44.6 | |
| 23:00 | 83.9 | |
| 22:00 | 75 | |
| 21:00 | 70.2 | |
| 20:00 | 66.9 | |
| 19:00 | 36.4 | |
| 18:00 | 15.2 | |
| 17:00 | 15.3 | |
| 16:00 | 19.4 | |
| 15:00 | 21.4 | |
| 14:00 | 15.6 | |
| 13:00 | 23.1 | |
| 12:00 | 25.4 | |
| 11:00 | 40 | |
| 10:00 | 33.8 | |
| 09:00 | 22.2 | |
| 08:00 | 19.3 | |
| 07:00 | 14.2 | |
| 06:00 | 14.8 | |
| 05:00 | 17.3 | |
| 04:00 | 15.4 | |
| 03:00 | 18.7 | |
| 02:00 | 23.1 | |
| 01:00 | 28.3 | |
| Sunday, 10/4 | ||
| 00:00 | 47.6 | |
| 23:00 | 50.2 | |
| 22:00 | 43.9 | |
| 21:00 | 42.3 | |
| 18:00 | 22.3 | |
| 17:00 | 17.9 | |
| 16:00 | 15.6 | |
| 15:00 | 22 | |
| 14:00 | 16 | |
| 13:00 | 17.9 | |
| 12:00 | 18.2 | |
| 11:00 | 14.5 | |
| 10:00 | 19.2 | |
| 09:00 | 16.7 | |
| 08:00 | 15.7 | |
| 07:00 | 15.2 | |
| 06:00 | 14.5 | |
| 05:00 | 11.4 | |
| 04:00 | 15.1 | |
| 03:00 | 17.3 | |
| 02:00 | 27.5 | |
| 01:00 | 32.7 | |
| Saturday, 10/3 | ||
| 00:00 | 38.5 | |
| 23:00 | 44.3 | |
| 22:00 | 46.1 | |
| 21:00 | 54.4 | |
| 17:00 | 19 | |
| 16:00 | 14.4 | |
| 15:00 | 15.3 | |
| 14:00 | 18.3 | |
| 13:00 | 21 | |
| 12:00 | 20.3 | |
| 11:00 | 23.3 | |
| 10:00 | 27 | |
| 09:00 | 26.3 | |
| 08:00 | 18.9 | |
| 07:00 | 26.3 | |
| 06:00 | 24.1 | |
| 05:00 | 25.4 | |
| 04:00 | 30.5 | |
| 03:00 | 35.2 | |
| 02:00 | 30.9 | |
| 01:00 | 33 | |
| Friday, 10/2 | ||
| 00:00 | 34.8 | |
| 23:00 | 49.9 | |
| 22:00 | 35.9 | |
| 21:00 | 27.5 | |
| 17:00 | 22.1 | |
| 16:00 | 18.3 | |
| 15:00 | 19.7 | |
| 14:00 | 21.9 | |
| 13:00 | 23.9 | |
| 12:00 | 24.4 | |
| 11:00 | 24.9 | |
| 10:00 | 37.1 | |
| 09:00 | 21.9 | |
| 08:00 | 19.4 | |
| 07:00 | 11.8 | |
| 06:00 | 15.9 | |
| 05:00 | 20.6 | |
| 04:00 | 16.7 | |
| 03:00 | 36 | |
| 02:00 | 42.6 | |
| 01:00 | 32.1 | |
| Thursday, 10/1 | ||
| 00:00 | 36 | |
| 23:00 | 24 | |
| 22:00 | 41.3 | |
| 21:00 | 54.3 | |
| 17:00 | 20.9 | |
| 16:00 | 20.7 | |
| 15:00 | 19.9 | |
| 14:00 | 22.5 | |
| 12:00 | 93.6 | |
| 11:00 | 23.5 | |
| 10:00 | 27.8 | |
| 09:00 | 26.6 | |
| 08:00 | 27.2 | |
| 07:00 | 20.7 | |
| 06:00 | 25.4 | |
| 05:00 | 21.4 | |
| 04:00 | 21.3 | |
| 03:00 | 34.2 | |
| 02:00 | 41.5 | |
| 01:00 | 45.8 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 39.3 | provisional |
| Mon, 10/5 | 31.6 | provisional |
| Sun, 10/4 | 23.3 | provisional |
| Sat, 10/3 | 28.2 | provisional |
| Fri, 10/2 | 26.5 | provisional |
| Thu, 10/1 | 32.4 | provisional |
| Wed, 9/30 | 34.9 | provisional |
| Tue, 9/29 | 34.2 | provisional |
| Mon, 9/28 | 25.7 | provisional |
| Sun, 9/27 | 23.6 | provisional |
| Sat, 9/26 | 24.3 | provisional |
| Fri, 9/25 | 20.4 | provisional |
| Thu, 9/24 | 40 | provisional |
| Wed, 9/23 | 26 | provisional |
| Tue, 9/22 | too few readings | |
| Mon, 9/21 | no data from the station | |
| Sun, 9/20 | no data from the station | |
| Sat, 9/19 | no data from the station | |
| Fri, 9/18 | no data from the station | |
| Thu, 9/17 | no data from the station | |
| Wed, 9/16 | no data from the station | |
| Tue, 9/15 | no data from the station | |
| Mon, 9/14 | no data from the station | |
| Sun, 9/13 | no data from the station | |
| Sat, 9/12 | no data from the station | |
| Fri, 9/11 | no data from the station | |
| Thu, 9/10 | no data from the station | |
| Wed, 9/9 | no data from the station | |
| Tue, 9/8 | no data from the station | |
| Mon, 9/7 | no data from the station |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 30.4 | 22.2 | measured in 92 % of hours · provisional · year before: same days |
| September 2026 | too few readings | 25.1 | measured in 30 % of hours · provisional · 20 days without data from the station |
| August 2026 | 27.7 | 22.1 | measured in 91 % of hours · provisional |
| July 2026 | 25.9 | too few readings | measured in 94 % of hours · provisional |
| June 2026 | 26.1 | 29.3 | measured in 83 % of hours · provisional · 1 day without data from the station |
| May 2026 | 23.2 | too few readings | measured in 94 % of hours · provisional |
| April 2026 | 32.5 | 26.9 | measured in 79 % of hours · provisional · 4 days without data from the station |
| March 2026 | 47.5 | 40.6 | measured in 97 % of hours · provisional |
| February 2026 | 48.4 | 78.4 | measured in 100 % of hours · provisional |
| January 2026 | 109.6 | 98.6 | measured in 88 % of hours · provisional · 2 days without data from the station |
| December 2025 | 66.7 | 66.7 | measured in 97 % of hours · verified |
| November 2025 | 55.6 | 86.6 | measured in 100 % of hours · verified |
PM10 by year
Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days above 50 µg/m³ (allowed 35) | ≥ 48 above the number allowed | 86 above the number allowed | 115 above the number allowed |
| Days above 150 µg/m³ (warning threshold FBiH) | ≥ 8 above the number allowed | 7 above the number allowed | 13 above the number allowed |
| Days above 300 µg/m³ (alert threshold FBiH) | 0 | 0 | 0 |
| Annual average, µg/m³ (legal limit 40) | too few | 45 above the number allowed | 49 above the number allowed |
| Highest daily average, µg/m³ | 293January 23 | 296January 21 | 264January 23 |
| Highest hourly value, µg/m³ | 366January 14 | 368January 21 | 403January 23 |
| Hours measured | 84 % | 92 % | 95 % |
| Days without any reading from the station | 27 | 22 | 0 |
* 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.
Unverified hourly values of particulate matter from 975 µg/m³ up, and single spikes from 500 µg/m³ up between low values, count as missing. In the verified data for BiH from 2023 to 2025 no hour was above 600 µg/m³.
■ and a figure in red: more than is allowed for the whole year.
There is no allowed number for the warning and alert thresholds: every such hour or day is in red.
The column for 2023 is shown on wider screens.
Compared with the new EU rules and the WHO recommendation
This is not the yardstick for the verdict above, only a comparison. From 2030 the EU tightens its limits (Directive (EU) 2024/2881), and since 2021 the World Health Organization has recommended even lower values.
- EU from 2030: daily 45 µg/m³, 18 days allowed. In 2023 there were 135 such days.
- WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2023 there were 135 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2023: 53 µg/m³.
- WHO 2021: annual average 15 µg/m³. Average in 2023: 53 µg/m³.
Sources: Directive (EU) 2024/2881, Annex I; WHO global air quality guidelines 2021, table 0.1. Checked against the texts on 7 October 2026.
The worst days of 2023
| Day | Average | Times the limit |
|---|---|---|
| Dec 21, 2023 | 277 | 5.5 × |
| Feb 12, 2023 | 232 | 4.6 × |
| Jan 4, 2023 | 224 | 4.5 × |
| Dec 12, 2023 | 206 | 4.1 × |
| Jan 2, 2023 | 205 | 4.1 × |
Daily average in µg/m³, daily limit 50 µg/m³. Days with the same unverified value over many hours are not on this list.
Nitrogen dioxide NO₂
50.2
Nowµg/m³
Measured at 21:00
17.9
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
19.1
Last 7 daysµg/m³
measured in 98 % of hours · provisional
too few readings
Last 30 days
measured in 48 % of hours · provisional
too few readings
Last 12 months
measured in 89 % of hours · 1 month with too few readings · provisional
Days in 2023: NO₂, daily average above 85 µg/m³
No measured day above the limit.
- above the limit
- below the limit
- too few readings for the day
- no NO₂ data in the EEA database
Months of 2023
| Month | Days above 85 | Hours above 200 | Highest day | No readings |
|---|---|---|---|---|
| January | 0 | 0 | 46 | 0 |
| February | 0 | 0 | 53 | 0 |
| March | 0 | 0 | 35 | 0 |
| April | 0 | 0 | 22 | 0 |
| May | 0 | 0 | 16 | 0 |
| June | 0 | 0 | 16 | 0 |
| July | 0 | 0 | 16 | 0 |
| August | 0 | 0 | 13 | 0 |
| September | 0 | 0 | 15 | 0 |
| October | 0 | 0 | 21 | 0 |
| November | 0 | 0 | 30 | 0 |
| December | 0 | 0 | 50 | 0 |
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.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 22:00 | 23 | model estimate, not counted |
| 21:00 | 50.2 | |
| 20:00 | 41.6 | |
| 19:00 | 14.1 | |
| 18:00 | 25.3 | |
| 17:00 | 6.3 | |
| 16:00 | 4.2 | |
| 15:00 | 4.5 | |
| 14:00 | 8 | |
| 13:00 | 13.3 | |
| 12:00 | 14.8 | |
| 11:00 | 16.9 | |
| 10:00 | 17.5 | |
| 09:00 | 25.3 | |
| 08:00 | 21.3 | |
| 07:00 | 19.9 | |
| 06:00 | 11.1 | |
| 05:00 | 12.4 | |
| 04:00 | 13.4 | |
| 03:00 | 14.8 | |
| 02:00 | 17.7 | |
| 01:00 | 20.7 | |
| Tuesday, 10/6 | ||
| 00:00 | 21 | |
| 23:00 | 29.3 | |
| 22:00 | 28.6 | |
| 21:00 | 36.4 | |
| 20:00 | 51.5 | |
| 19:00 | 52.7 | |
| 18:00 | 40.4 | |
| 17:00 | 11.9 | |
| 16:00 | 5.9 | |
| 15:00 | 7.2 | |
| 14:00 | 12.6 | |
| 13:00 | 13.7 | |
| 12:00 | 11.8 | |
| 11:00 | 19 | |
| 10:00 | 28.9 | |
| 09:00 | 28.2 | |
| 08:00 | 17.5 | |
| 07:00 | 17 | |
| 06:00 | 7.8 | |
| 05:00 | 9.2 | |
| 04:00 | 11.3 | |
| 03:00 | 17.7 | |
| 02:00 | 22.1 | |
| 01:00 | 26.6 | |
| Monday, 10/5 | ||
| 00:00 | 43.9 | |
| 23:00 | 36.9 | |
| 22:00 | 52 | |
| 21:00 | 59.2 | |
| 20:00 | 54 | |
| 19:00 | 55.4 | |
| 18:00 | 41.8 | |
| 17:00 | 10.6 | |
| 16:00 | 6.9 | |
| 15:00 | 6.8 | |
| 14:00 | 7.7 | |
| 13:00 | 8.1 | |
| 12:00 | 10.4 | |
| 11:00 | 11.5 | |
| 10:00 | 22.9 | |
| 09:00 | 22.8 | |
| 08:00 | 20.5 | |
| 07:00 | 18.9 | |
| 06:00 | 7.1 | |
| 05:00 | 10.8 | |
| 04:00 | 13.5 | |
| 03:00 | 10.7 | |
| 02:00 | 18.1 | |
| 01:00 | 28.4 | |
| Sunday, 10/4 | ||
| 00:00 | 21.1 | |
| 23:00 | 43.9 | |
| 22:00 | 49.9 | |
| 21:00 | 40.5 | |
| 20:00 | 46.5 | |
| 19:00 | 54.6 | |
| 18:00 | 15.3 | |
| 17:00 | 10.9 | |
| 16:00 | 4.3 | |
| 15:00 | 3.2 | |
| 14:00 | 3.6 | |
| 13:00 | 4 | |
| 12:00 | 3.2 | |
| 11:00 | 4.9 | |
| 10:00 | 6.2 | |
| 09:00 | 13.2 | |
| 08:00 | 14.5 | |
| 07:00 | 10.9 | |
| 06:00 | 8.9 | |
| 05:00 | 8.4 | |
| 04:00 | 11.6 | |
| 03:00 | 16.6 | |
| 02:00 | 18.2 | |
| 01:00 | 29.4 | |
| Saturday, 10/3 | ||
| 00:00 | 39.2 | |
| 23:00 | 41.6 | |
| 22:00 | 37.3 | |
| 21:00 | 49.7 | |
| 20:00 | 44.4 | |
| 19:00 | 45.7 | |
| 17:00 | 7 | |
| 16:00 | 6.8 | |
| 15:00 | 6.9 | |
| 14:00 | 8.3 | |
| 13:00 | 10.7 | |
| 12:00 | 11.9 | |
| 11:00 | 11.5 | |
| 10:00 | 18 | |
| 09:00 | 19.3 | |
| 08:00 | 16.8 | |
| 07:00 | 13.9 | |
| 06:00 | 15.1 | |
| 05:00 | 14 | |
| 04:00 | 18.1 | |
| 03:00 | 22.5 | |
| 02:00 | 33.1 | |
| 01:00 | 26.9 | |
| Friday, 10/2 | ||
| 00:00 | 27.7 | |
| 23:00 | 27.8 | |
| 22:00 | 30.4 | |
| 21:00 | 29.3 | |
| 20:00 | 34 | |
| 19:00 | 30.8 | |
| 17:00 | 14 | |
| 16:00 | 5.8 | |
| 15:00 | 6.6 | |
| 14:00 | 6.7 | |
| 13:00 | 8.3 | |
| 12:00 | 9.4 | |
| 11:00 | 8.4 | |
| 10:00 | 13.4 | |
| 09:00 | 17 | |
| 08:00 | 18.1 | |
| 07:00 | 12.1 | |
| 06:00 | 5 | |
| 05:00 | 6.4 | |
| 04:00 | 11.1 | |
| 03:00 | 12.6 | |
| 02:00 | 19.9 | |
| 01:00 | 28.9 | |
| Thursday, 10/1 | ||
| 00:00 | 29.3 | |
| 23:00 | 29 | |
| 22:00 | 26.4 | |
| 21:00 | 34.5 | |
| 20:00 | 44.1 | |
| 19:00 | 35.4 | |
| 17:00 | 6.1 | |
| 16:00 | 5.8 | |
| 15:00 | 7.4 | |
| 14:00 | 8.6 | |
| 13:00 | 9.8 | |
| 12:00 | 10 | |
| 11:00 | 13.8 | |
| 10:00 | 11.8 | |
| 09:00 | 18.3 | |
| 08:00 | 18.1 | |
| 07:00 | 10.9 | |
| 06:00 | 5.2 | |
| 05:00 | 4.3 | |
| 04:00 | 5 | |
| 03:00 | 8.4 | |
| 02:00 | 12.2 | |
| 01:00 | 18.5 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 22 | provisional |
| Mon, 10/5 | 24.1 | provisional |
| Sun, 10/4 | 18.5 | provisional |
| Sat, 10/3 | 22.6 | provisional |
| Fri, 10/2 | 16.7 | provisional |
| Thu, 10/1 | 16.2 | provisional |
| Wed, 9/30 | 13.1 | provisional |
| Tue, 9/29 | 18.2 | provisional |
| Mon, 9/28 | 14.1 | provisional |
| Sun, 9/27 | 10.3 | provisional |
| Sat, 9/26 | 14.1 | provisional |
| Fri, 9/25 | 14.4 | provisional |
| Thu, 9/24 | 17.3 | provisional |
| Wed, 9/23 | 16 | provisional |
| Tue, 9/22 | too few readings | |
| Mon, 9/21 | no data from the station | |
| Sun, 9/20 | no data from the station | |
| Sat, 9/19 | no data from the station | |
| Fri, 9/18 | no data from the station | |
| Thu, 9/17 | no data from the station | |
| Wed, 9/16 | no data from the station | |
| Tue, 9/15 | no data from the station | |
| Mon, 9/14 | no data from the station | |
| Sun, 9/13 | no data from the station | |
| Sat, 9/12 | no data from the station | |
| Fri, 9/11 | no data from the station | |
| Thu, 9/10 | no data from the station | |
| Wed, 9/9 | no data from the station | |
| Tue, 9/8 | no data from the station | |
| Mon, 9/7 | no data from the station |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 20 | 13.8 | measured in 98 % of hours · provisional · year before: same days |
| September 2026 | too few readings | 12.5 | measured in 30 % of hours · provisional · 20 days without data from the station |
| August 2026 | 12.7 | 13.7 | measured in 97 % of hours · provisional |
| July 2026 | 9.4 | too few readings | measured in 94 % of hours · provisional |
| June 2026 | 9.1 | 10.1 | measured in 90 % of hours · provisional · 1 day without data from the station |
| May 2026 | 9.1 | too few readings | measured in 94 % of hours · provisional |
| April 2026 | 12.8 | 11.7 | measured in 79 % of hours · provisional · 4 days without data from the station |
| March 2026 | 20 | 17.5 | measured in 100 % of hours · provisional |
| February 2026 | 22.6 | 28.1 | measured in 100 % of hours · provisional |
| January 2026 | 38.5 | 31.8 | measured in 88 % of hours · provisional · 2 days without data from the station |
| December 2025 | 26.9 | 26.2 | measured in 100 % of hours · verified |
| November 2025 | 23.5 | 23.4 | measured in 100 % of hours · verified |
NO₂ by year
Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days above 85 µg/m³ (none allowed) | 0² | 0 | 0 |
| Hours above 200 µg/m³ (allowed 18) | 0² | 0 | 0 |
| Hours above 400 µg/m³, three hours in a row (alert threshold) | 0 | 0 | 0 |
| Annual average, µg/m³ (legal limit 40) | too few | 18.5 | 15.6 |
| Highest daily average, µg/m³ | 68January 23 | 74January 2 | 67December 31 |
| Highest hourly value, µg/m³ | 130January 15 | 121January 2 | 95January 22 |
| Hours measured | 86 % | 91 % | 93 % |
| Days without any reading from the station | 27 | 22 | 0 |
* 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.
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.
There is no allowed number for the warning and alert thresholds: every such hour or day is in red.
The column for 2023 is shown on wider screens.
Compared with the new EU rules and the WHO recommendation
This is not the yardstick for the verdict above, only a comparison. From 2030 the EU tightens its limits (Directive (EU) 2024/2881), and since 2021 the World Health Organization has recommended even lower values.
- EU from 2030: daily 50 µg/m³, 18 days allowed. In 2023 there was 1 such day.
- WHO 2021: daily 25 µg/m³, at most three to four days a year. In 2023 there were 62 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2023: 16 µg/m³.
- WHO 2021: annual average 10 µg/m³. Average in 2023: 16 µg/m³.
Sources: Directive (EU) 2024/2881, Annex I; WHO global air quality guidelines 2021, table 0.1. Checked against the texts on 7 October 2026.
Sulphur dioxide SO₂
3.9
Nowµg/m³
Measured at 21:00
2.5
Last 24 hoursµg/m³
measured in 92 % of hours · provisional
8.9
Last 7 daysµg/m³
measured in 85 % of hours · provisional
too few readings
Last 30 days
measured in 45 % of hours · provisional
too few readings
Last 12 months
measured in 87 % of hours · 1 month with too few readings · provisional
Days in 2023: SO₂, daily average above 125 µg/m³
2 days above the limit.
- above the limit
- below the limit
- too few readings for the day
- no SO₂ data in the EEA database
Days above the limit with values (2)
- Feb 10 214
- Feb 12 168
Values in µg/m³, limit 125 µg/m³.
Months of 2023
| Month | Days above 125 | Hours above 350 | Highest day | No readings |
|---|---|---|---|---|
| January | 0 | 0 | 106 | 0 |
| February | 2 above the number allowed | 5 | 214 | 0 |
| March | 0 | 0 | 63 | 0 |
| April | 0 | 0 | 62 | 0 |
| May | 0 | 2 | 65 | 0 |
| June | 0 | 0 | 48 | 0 |
| July | 0 | 1 | 79 | 0 |
| August | 0 | 5 | 62 | 0 |
| September | 0 | 0 | 29 | 0 |
| October | 0 | 1 | 61 | 0 |
| November | 0 | 0 | 46 | 0 |
| December | 0 | 0 | 66 | 0 |
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.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 21:00 | 3.9 | |
| 20:00 | 1.4 | |
| 19:00 | 1.1 | |
| 18:00 | 1.9 | |
| 17:00 | 1.7 | |
| 16:00 | 2 | |
| 15:00 | 2.5 | |
| 14:00 | 4.6 | |
| 13:00 | 7.1 | |
| 12:00 | 7.3 | |
| 11:00 | 5.3 | |
| 10:00 | 5 | |
| 09:00 | 4.3 | |
| 08:00 | 0.3 | |
| 07:00 | 0.4 | |
| 06:00 | 0.4 | |
| 05:00 | 0.6 | |
| 04:00 | 0.3 | |
| 03:00 | 0.6 | |
| 02:00 | 1.3 | |
| 01:00 | 1.2 | |
| Tuesday, 10/6 | ||
| 00:00 | 1.8 | |
| 23:00 | 2.8 | |
| 22:00 | 4.5 | |
| 21:00 | 7.8 | |
| 20:00 | 4.3 | |
| 19:00 | 4 | |
| 18:00 | 6.5 | |
| 17:00 | 5.2 | |
| 16:00 | 3.4 | |
| 15:00 | 3 | |
| 14:00 | 3.7 | |
| 13:00 | 3 | |
| 12:00 | 2.7 | |
| 11:00 | 3.1 | |
| 10:00 | 2.9 | |
| 09:00 | 1.8 | |
| 08:00 | 0.3 | |
| 05:00 | 0.2 | |
| 04:00 | 0.2 | |
| 01:00 | 0.9 | |
| Monday, 10/5 | ||
| 00:00 | 1.8 | |
| 23:00 | 2.1 | |
| 22:00 | 4.1 | |
| 21:00 | 5.6 | |
| 20:00 | 4.9 | |
| 19:00 | 3.5 | |
| 18:00 | 1.7 | |
| 17:00 | 1.7 | |
| 16:00 | 1.5 | |
| 15:00 | 2.4 | |
| 14:00 | 1.9 | |
| 13:00 | 1.2 | |
| 12:00 | 1.7 | |
| 11:00 | 0.6 | |
| 07:00 | 0 | |
| 06:00 | 0.4 | |
| 05:00 | 0.9 | |
| 04:00 | 1.3 | |
| 03:00 | 1.6 | |
| 02:00 | 2.9 | |
| 01:00 | 4.2 | |
| Sunday, 10/4 | ||
| 00:00 | 7.4 | |
| 23:00 | 17.6 | |
| 22:00 | 39.8 | |
| 21:00 | 70.5 | |
| 20:00 | 41.1 | |
| 19:00 | 31 | |
| 18:00 | 196.8 | |
| 17:00 | 96.7 | |
| 16:00 | 11 | |
| 15:00 | 3.7 | |
| 14:00 | 2.5 | |
| 13:00 | 1.1 | |
| 12:00 | 0.8 | |
| 11:00 | 0.3 | |
| 10:00 | 0.3 | |
| 08:00 | 0 | |
| 07:00 | 0.2 | |
| 06:00 | 0.5 | |
| 05:00 | 0.6 | |
| 04:00 | 0.4 | |
| 03:00 | 1.8 | |
| 02:00 | 2.2 | |
| 01:00 | 2.8 | |
| Saturday, 10/3 | ||
| 00:00 | 3.9 | |
| 23:00 | 5.1 | |
| 22:00 | 8.5 | |
| 21:00 | 11.6 | |
| 20:00 | 10.4 | |
| 19:00 | 9.1 | |
| 17:00 | 9.4 | |
| 16:00 | 4.8 | |
| 15:00 | 2.8 | |
| 14:00 | 1.9 | |
| 13:00 | 1.1 | |
| 12:00 | 0.6 | |
| 11:00 | 0.2 | |
| 04:00 | 0.3 | |
| 03:00 | 0.7 | |
| 02:00 | 2.1 | |
| 01:00 | 2.7 | |
| Friday, 10/2 | ||
| 00:00 | 3.9 | |
| 23:00 | 4.6 | |
| 22:00 | 6.7 | |
| 21:00 | 6.2 | |
| 20:00 | 5.7 | |
| 19:00 | 7.3 | |
| 17:00 | 103 | |
| 16:00 | 16.8 | |
| 15:00 | 2.5 | |
| 14:00 | 1.4 | |
| 13:00 | 0.8 | |
| 11:00 | 0.5 | |
| 03:00 | 1.1 | |
| 02:00 | 0.5 | |
| 01:00 | 1.7 | |
| Thursday, 10/1 | ||
| 00:00 | 3.2 | |
| 23:00 | 4.5 | |
| 22:00 | 5.1 | |
| 21:00 | 7 | |
| 20:00 | 7.9 | |
| 19:00 | 8.5 | |
| 17:00 | 7.8 | |
| 16:00 | 4.5 | |
| 15:00 | 2.2 | |
| 14:00 | 1.2 | |
| 13:00 | 1.3 | |
| 12:00 | 7.2 | |
| 11:00 | 8.6 | |
| 10:00 | 6.7 | |
| 09:00 | 6.6 | |
| 08:00 | 6.6 | |
| 07:00 | 6.4 | |
| 06:00 | 7.2 | |
| 05:00 | 7 | |
| 04:00 | 7.4 | |
| 03:00 | 7.9 | |
| 02:00 | 9.8 | |
| 01:00 | 10.4 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 3.1 | provisional |
| Mon, 10/5 | 2.2 | provisional |
| Sun, 10/4 | 23 | provisional |
| Sat, 10/3 | too few readings | |
| Fri, 10/2 | too few readings | |
| Thu, 10/1 | 6.3 | provisional |
| Wed, 9/30 | 10.5 | provisional |
| Tue, 9/29 | 61.4 | provisional |
| Mon, 9/28 | 19.7 | provisional |
| Sun, 9/27 | 5.5 | provisional |
| Sat, 9/26 | 7.9 | provisional |
| Fri, 9/25 | 8.3 | provisional |
| Thu, 9/24 | 15.9 | provisional |
| Wed, 9/23 | 50.4 | provisional |
| Tue, 9/22 | too few readings | |
| Mon, 9/21 | no data from the station | |
| Sun, 9/20 | no data from the station | |
| Sat, 9/19 | no data from the station | |
| Fri, 9/18 | no data from the station | |
| Thu, 9/17 | no data from the station | |
| Wed, 9/16 | no data from the station | |
| Tue, 9/15 | no data from the station | |
| Mon, 9/14 | no data from the station | |
| Sun, 9/13 | no data from the station | |
| Sat, 9/12 | no data from the station | |
| Fri, 9/11 | no data from the station | |
| Thu, 9/10 | no data from the station | |
| Wed, 9/9 | no data from the station | |
| Tue, 9/8 | no data from the station | |
| Mon, 9/7 | no data from the station |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 8.6 | 9.1 | measured in 83 % of hours · provisional · year before: same days |
| September 2026 | too few readings | 9.2 | measured in 30 % of hours · provisional · 20 days without data from the station |
| August 2026 | too few readings | 13.2 | measured in 74 % of hours · provisional |
| July 2026 | 19.2 | too few readings | measured in 94 % of hours · provisional |
| June 2026 | 29.8 | 12.2 | measured in 85 % of hours · provisional · 1 day without data from the station |
| May 2026 | 13.4 | too few readings | measured in 94 % of hours · provisional |
| April 2026 | 15.3 | 11.5 | measured in 78 % of hours · provisional · 4 days without data from the station |
| March 2026 | 16.5 | 17.5 | measured in 99 % of hours · provisional |
| February 2026 | 23 | 92.3 | measured in 100 % of hours · provisional |
| January 2026 | 60.7 | 71.9 | measured in 88 % of hours · provisional · 2 days without data from the station |
| December 2025 | 36.4 | 46.9 | measured in 100 % of hours · verified |
| November 2025 | 35.5 | 32.2 | measured in 100 % of hours · verified |
SO₂ by year
Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days above 125 µg/m³ (allowed 3) | ≥ 4 above the number allowed | 12 above the number allowed | 3 |
| Hours above 350 µg/m³ (allowed 24) | ≥ 24² | 52 above the number allowed | 19 |
| Hours above 500 µg/m³, three hours in a row (alert threshold) | ≥ 6 above the number allowed | 12 above the number allowed | 4 above the number allowed |
| Annual average, µg/m³ (legal limit 50) | too few | 29.8 | 19.6 |
| Highest daily average, µg/m³ | 245January 22 | 359February 10 | 248December 28 |
| Highest hourly value, µg/m³ | 1,053June 25 | 1,271February 5 | 769November 10 |
| Hours measured | 82 % | 92 % | 92 % |
| Days without any reading from the station | 27 | 22 | 0 |
* 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.
There is no allowed number for the warning and alert thresholds: every such hour or day is in red.
The column for 2023 is shown on wider screens.
Compared with the new EU rules and the WHO recommendation
This is not the yardstick for the verdict above, only a comparison. From 2030 the EU tightens its limits (Directive (EU) 2024/2881), and since 2021 the World Health Organization has recommended even lower values.
- EU from 2030: daily 50 µg/m³, 18 days allowed. In 2023 there were 52 such days.
- WHO 2021: daily 40 µg/m³, at most three to four days a year. In 2023 there were 73 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2023: 26 µg/m³.
Sources: Directive (EU) 2024/2881, Annex I; WHO global air quality guidelines 2021, table 0.1. Checked against the texts on 7 October 2026.
The worst days of 2023
| Day | Average | Times the limit |
|---|---|---|
| Feb 10, 2023 | 214 | 1.7 × |
| Feb 12, 2023 | 168 | 1.3 × |
Daily average in µg/m³, daily limit 125 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: 36
8 outages, 853 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Sep 1, 2026 09:00 | Sep 22, 2026 09:00 | 21 days |
| Jul 1, 2026 09:00 | Jul 2, 2026 09:00 | 24 hours |
| Jun 9, 2026 05:00 | Jun 11, 2026 11:00 | 2 days |
| May 23, 2026 01:00 | May 24, 2026 08:00 | 31 hours |
| Apr 10, 2026 04:00 | Apr 13, 2026 11:00 | 3 days |
| Apr 4, 2026 12:00 | Apr 7, 2026 09:00 | 3 days |
| Jan 26, 2026 15:00 | Jan 28, 2026 14:00 | 47 hours |
| Jan 9, 2026 14:00 | Jan 11, 2026 11:00 | 45 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).
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.
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