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Air at the Maglaj station

Maglaj, Zenica-Doboj Canton · Federation of Bosnia and Herzegovina

Network: Federal Hydrometeorological Institute · Station code: BA0054A

This year, up to yesterday (October 6)

at least

36 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 1 day more than allowed

In 2025: 81 days above the limit, 35 allowed.

at least

1 hour

with sulphur dioxide (SO₂) above the legal hourly limit of 350 µg/m³.

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

Worst day: January 22, 2026, PM10 189 µg/m³ as a daily average, 3.8 times the limit.

At least 1 day 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.

Daily average for 201 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

Moderate

Air now · Measured at 20:00

Latest values

Latest value: 20:00

Readings
PollutantValueLevel
PM1050 µg/m³Moderate
NO₂30.5 µg/m³Moderate

How the air is changing

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

  • PM10: average 35.1 µg/m³, week before 22.5 µg/m³
  • PM2.5: average 24.1 µg/m³, week before 14.5 µg/m³
  • NO₂: average 17.6 µg/m³, week before 10.7 µg/m³
  • SO₂: too few readings to compare

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

  • PM10: too few readings to compare
  • PM2.5: too few readings to compare
  • NO₂: too few readings to compare
  • SO₂: too few readings to compare

Show

Particulate matter PM10

50

Nowµg/m³

Measured at 20:00

45.9

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

35.1

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 80 % of hours · 2 months with too few readings · provisional

Days in 2026: PM10, daily average above 50 µg/m³

36 days above the limit. 57 days without any reading from the station.

1102031JanJan 10: no data from the stationJan 12: 76 µg/m³, above the limitJan 13: 86 µg/m³, above the limitJan 14: 88 µg/m³, above the limitJan 15: 89 µg/m³, above the limitJan 16: 72 µg/m³, above the limitJan 17: 91 µg/m³, above the limitJan 18: 70 µg/m³, above the limitJan 19: 92 µg/m³, above the limitJan 20: 79 µg/m³, above the limitJan 21: 108 µg/m³, above the limitJan 22: 189 µg/m³, above the limitJan 27: no data from the stationJan 28: no data from the stationJan 31: 56 µg/m³, above the limitFebFeb 3: 64 µg/m³, above the limitFeb 4: 87 µg/m³, above the limitFeb 5: 74 µg/m³, above the limitFeb 6: 52 µg/m³, above the limitFeb 9: 63 µg/m³, above the limitFeb 10: 61 µg/m³, above the limitFeb 14: 65 µg/m³, above the limitFeb 24: 58 µg/m³, above the limitFeb 27: 59 µg/m³, above the limitFeb 28: 69 µg/m³, above the limitMarMar 1: 72 µg/m³, above the limitMar 2: 82 µg/m³, above the limitMar 3: 66 µg/m³, above the limitMar 4: 85 µg/m³, above the limitMar 5: 62 µg/m³, above the limitMar 6: 64 µg/m³, above the limitMar 7: 63 µg/m³, above the limitMar 8: 64 µg/m³, above the limitMar 9: 66 µg/m³, above the limitMar 10: 54 µg/m³, above the limitMar 11: 50 µg/m³, above the limitMar 16: 60 µg/m³, above the limitMar 17: 58 µg/m³, above the limitMar 19: 54 µg/m³, above the limitAprApr 5: no data from the stationApr 6: no data from the stationApr 11: no data from the stationApr 12: no data from the stationMayJunJun 10: no data from the stationJulAugAug 4: no data from the stationAug 5: no data from the stationAug 6: no data from the stationAug 7: no data from the stationAug 8: no data from the stationAug 9: no data from the stationAug 10: no data from the stationAug 11: no data from the stationAug 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 19: no data from the stationAug 20: no data from the stationAug 21: no data from the stationAug 22: no data from the stationAug 23: no data from the stationAug 24: no data from the stationAug 25: no data from the stationAug 26: no data from the stationAug 27: no data from the stationAug 28: no data from the stationAug 29: no data from the stationAug 30: no data from the stationAug 31: no data from the stationSepSep 1: no data from the stationSep 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 PM10 data in the EEA database
  • no data from the station
Days above the limit with values (36)
  1. Jan 12 76
  2. Jan 13 86
  3. Jan 14 88
  4. Jan 15 89
  5. Jan 16 72
  6. Jan 17 91
  7. Jan 18 70
  8. Jan 19 92
  9. Jan 20 79
  10. Jan 21 108
  11. Jan 22 189
  12. Jan 31 56
  13. Feb 3 64
  14. Feb 4 87
  15. Feb 5 74
  16. Feb 6 52
  17. Feb 9 63
  18. Feb 10 61
  19. Feb 14 65
  20. Feb 24 58
  21. Feb 27 59
  22. Feb 28 69
  23. Mar 1 72
  24. Mar 2 82
  25. Mar 3 66
  26. Mar 4 85
  27. Mar 5 62
  28. Mar 6 64
  29. Mar 7 63
  30. Mar 8 64
  31. Mar 9 66
  32. Mar 10 54
  33. Mar 11 50
  34. Mar 16 60
  35. Mar 17 58
  36. Mar 19 54

Values in µg/m³, limit 50 µg/m³.

Months of 2026

MonthDays above 50Highest dayNo readings
January12 above the number allowed1893
February10 above the number allowed870
March14 above the number allowed850
April0444
May0270
June0371
July0370
August02328
September03021
October up to yesterday0470

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: PM10 in µg/m³highest 110 µg/m³, latest 50 µg/m³ (20:00)050100150ThuFriSatSunMonTueWedhighest 110latest 50 (20:00)
measuredmodel estimate, not counted
Last 7 days, every hour: PM10 in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
21:0051model estimate, not counted
20:0050
19:0053.5
18:0041.2
17:0031.3
16:0034.4
15:0020.1
14:0026.3
13:0048.9
12:0054.7
11:0049
10:0053.3
09:0049.6
08:0053.4
07:0049.2
06:0046.6
05:0048.8
04:0046.8
03:0044.7
02:0045.1
01:0049
Tuesday, 10/6
00:0052.7
23:0061.4
22:0071.8
21:0076.7
20:0053.2
19:0044.8
18:0039
17:0029.1
16:0020.2
15:0024.6
14:0034.3
13:0039.7
12:0063.2
11:0067.2
10:0088.6
09:0066.1
08:0060.5
07:0032.2
06:0037
05:0033.7
04:0032.6
03:0035.8
02:0037.8
01:0035.9
Monday, 10/5
00:0049.8
23:0047.2
22:0060.2
21:0070.9
20:0057.8
19:0038.9
18:00103.4
17:0040
16:0025.3
15:0021.5
14:0022.3
13:0028.6
12:0032.1
11:0038.3
10:0054.7
09:0046.4
08:0033.9
07:0026.5
06:0026.1
05:0028.5
04:0031.8
03:0031.8
02:0029.3
01:0031.3
Sunday, 10/4
00:0034.6
23:0047.4
22:0065.1
21:0054.4
20:0042
19:0025.7
18:0021.1
17:0015.4
16:0014.1
15:0013.8
14:0013.4
13:0019.9
12:0025.5
11:0026.5
10:0052.5
09:0054.4
08:0035.6
07:0022.8
06:0026.1
05:0026.3
04:0030.2
03:0033.2
02:0032.9
01:0034.8
Saturday, 10/3
00:0041
23:0051.6
22:0061.9
21:0050.3
20:0029.1
19:0021.2
18:0015.2
17:009.6
16:008
15:009.8
14:009.3
13:0015.5
12:0032.5
11:0054.2
10:0063.9
09:0032.9
08:0034.9
07:0038.4
06:0035.3
05:0049.6
04:0067
03:0060.1
02:0046.3
01:0044.6
Friday, 10/2
00:0063.2
23:0082.4
22:00110.1
21:0098.6
20:0021.5
19:0022.3
18:0017.2
17:0014.9
16:0011
15:009.3
14:0012.1
13:0024.1
12:0030.5
11:0051.3
10:0050.8
09:0035.6
08:0026
07:0023.9
06:0022.8
05:0020.6
04:0024.1
03:0026.3
02:0027.6
01:0035.6
Thursday, 10/1
00:0036.9
23:0045.9
22:0043.2
21:0021.2
20:0020.2
19:0019.1
18:0014.9
17:0010.8
16:0011.2
15:0011.8
14:009.9
13:0016.8
12:0036.8
11:0061.7
10:0046
09:0043.6
08:0027.8
07:0022.8
06:0021.8
05:0024.3
04:0023.3
03:0023.8
02:0027.5
01:0032.8
Wednesday, 9/30
00:0032.3
Last 30 days, daily average: PM10 in µg/m³highest 47 µg/m³, latest 47 µg/m³02040609/99/169/239/30highest 47
too few readingslegal daily limit, 50 µg/m³no data from the station
Last 30 days, daily average: PM10 in µg/m³
Values as a table
Dayµg/m³Note
Tue, 10/647.4provisional
Mon, 10/540.7provisional
Sun, 10/432provisional
Sat, 10/336.8provisional
Fri, 10/235.9provisional
Thu, 10/127.3provisional
Wed, 9/3025.5provisional
Tue, 9/2928.1provisional
Mon, 9/2826.6provisional
Sun, 9/2730.4provisional
Sat, 9/2630.1provisional
Fri, 9/258.6provisional
Thu, 9/2420.8provisional
Wed, 9/2312.5provisional
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: PM10 in µg/m³highest 72 µg/m³, latest 37 µg/m³0255075DecFebAprJunAugOcthighest 72latest 37
Last 12 monthsthis month so fara year earlierlegal annual limit, 40 µg/m³month with days without data from the station
Last 12 months, monthly average: PM10 in µg/m³
Values as a table
Monthµg/m³a year earlierNote
October 2026 so far36.719.7measured in 100 % of hours · provisional · year before: same days
September 2026too few readings27.3measured in 29 % of hours · provisional · 21 days without data from the station
August 2026too few readings25.7measured in 9 % of hours · provisional · 28 days without data from the station
July 202620.521.5measured in 95 % of hours · provisional
June 202619.918.9measured in 93 % of hours · provisional · 1 day without data from the station
May 202618.321.1measured in 94 % of hours · provisional
April 202626.325.7measured in 79 % of hours · provisional · 4 days without data from the station
March 202648.738.6measured in 100 % of hours · provisional
February 202646.364.7measured in 100 % of hours · provisional
January 202672.459.8measured in 75 % of hours · provisional · 3 days without data from the station
December 202568.2too few readingsmeasured in 98 % of hours · verified
November 202533.7measured 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)

Measure2026*20252024
Days above 50 µg/m³ (allowed 35)≥ 36 above the number allowed81 above the number allowed≥ 56 above the number allowed
Days above 150 µg/m³ (warning threshold FBiH)≥ 1 above the number allowed1 above the number allowed0
Days above 300 µg/m³ (alert threshold FBiH)000
Annual average, µg/m³ (legal limit 40)too few35.7too few
Highest daily average, µg/m³189January 22152December 29137February 1
Highest hourly value, µg/m³264January 23333December 29493September 4
Hours measured75 %98 %77 %
Days without any reading from the station57176

* 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 2026 there were 48 such days.
  • WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2026 there were 48 such days.

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 2026

DayAverageTimes the limit
Jan 22, 2026provisional1893.8 ×
Jan 21, 2026provisional1082.2 ×
Jan 19, 2026provisional921.8 ×
Jan 17, 2026provisional911.8 ×
Jan 15, 2026provisional891.8 ×

Daily average in µg/m³, daily limit 50 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: 67

9 outages, 1,598 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

FromToDuration
Aug 3, 2026 16:00Sep 22, 2026 09:0050 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 29, 2026 09:003 days
Jan 9, 2026 14:00Jan 11, 2026 11:0045 hours
Oct 26, 2025 02:00Oct 27, 2025 15:0037 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). In Zenica-Doboj Canton the Ministry of Physical Planning, Transport, Communications and Environmental Protection is responsible for environmental protection. The 2024 intervention plan was adopted by the Government of the canton.
Municipality
May run its own stations with the consent of the canton and must publish their results (Art. 16 and 17). Under the Zenica-Doboj Canton intervention plan (Official Gazette ZDK 3/24, Art. 3), the mayor of the municipality or city declares readiness based on the report of the authorised expert institution, and warning and alert based on the decision of the operational headquarters.
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).

In Zenica-Doboj Canton the procedure is set by the intervention plan (Official Gazette ZDK 3/24) in three stages: readiness, warning and alert. An alert also requires a forecast of stable weather for the next 48 hours.

The canton also has an Action Plan for Air Quality Protection from 2020 (Official Gazette ZDK 9/20), adopted under the earlier law. We could not tell from the published decision how long it applies.

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

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