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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 21:00

Latest values

Latest value: 21:00

Readings
PollutantValueLevel
PM1078.6 µg/m³Moderate
NO₂46.9 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

78.6

Nowµg/m³

Measured at 21:00

46.7

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 2025: PM10, daily average above 50 µg/m³

81 days above the limit. 1 day without any reading from the station.

1102031JanJan 1: 81 µg/m³, above the limitJan 2: 90 µg/m³, above the limitJan 3: 79 µg/m³, above the limitJan 4: 86 µg/m³, above the limitJan 5: 65 µg/m³, above the limitJan 6: 82 µg/m³, above the limitJan 7: 73 µg/m³, above the limitJan 8: 82 µg/m³, above the limitJan 9: 84 µg/m³, above the limitJan 12: 55 µg/m³, above the limitJan 13: 54 µg/m³, above the limitJan 14: 56 µg/m³, above the limitJan 16: 101 µg/m³, above the limitJan 17: 56 µg/m³, above the limitJan 21: 51 µg/m³, above the limitJan 22: 52 µg/m³, above the limitJan 24: 51 µg/m³, above the limitJan 25: 59 µg/m³, above the limitJan 26: 60 µg/m³, above the limitJan 28: 55 µg/m³, above the limitJan 29: 64 µg/m³, above the limitJan 30: 66 µg/m³, above the limitJan 31: 54 µg/m³, above the limitFebFeb 1: 56 µg/m³, above the limitFeb 2: 66 µg/m³, above the limitFeb 7: 57 µg/m³, above the limitFeb 8: 76 µg/m³, above the limitFeb 9: 96 µg/m³, above the limitFeb 10: 97 µg/m³, above the limitFeb 11: 94 µg/m³, above the limitFeb 12: 96 µg/m³, above the limitFeb 13: 73 µg/m³, above the limitFeb 14: 74 µg/m³, above the limitFeb 15: 64 µg/m³, above the limitFeb 16: 88 µg/m³, above the limitFeb 17: 90 µg/m³, above the limitFeb 18: 77 µg/m³, above the limitFeb 19: 68 µg/m³, above the limitFeb 20: 57 µg/m³, above the limitFeb 21: 53 µg/m³, above the limitFeb 22: 70 µg/m³, above the limitFeb 23: 74 µg/m³, above the limitFeb 24: 51 µg/m³, above the limitFeb 27: 53 µg/m³, above the limitFeb 28: 51 µg/m³, above the limitMarMar 1: 63 µg/m³, above the limitMar 2: 79 µg/m³, above the limitMar 3: 74 µg/m³, above the limitMar 4: 61 µg/m³, above the limitMar 6: 57 µg/m³, above the limitMar 19: 55 µg/m³, above the limitAprMayMay 26: no data from the stationJunJun 23: 52 µg/m³, above the limitJulAugAug 18: 60 µg/m³, above the limitAug 21: 50 µg/m³, above the limitSepSep 9: 52 µg/m³, above the limitOctNovNov 10: 58 µg/m³, above the limitNov 20: 53 µg/m³, above the limitNov 21: 57 µg/m³, above the limitNov 28: 59 µg/m³, above the limitDecDec 5: 71 µg/m³, above the limitDec 6: 54 µg/m³, above the limitDec 9: 73 µg/m³, above the limitDec 10: 71 µg/m³, above the limitDec 11: 71 µg/m³, above the limitDec 12: 68 µg/m³, above the limitDec 13: 52 µg/m³, above the limitDec 17: 65 µg/m³, above the limitDec 18: 72 µg/m³, above the limitDec 19: 68 µg/m³, above the limitDec 20: 104 µg/m³, above the limitDec 21: 105 µg/m³, above the limitDec 22: 66 µg/m³, above the limitDec 23: 59 µg/m³, above the limitDec 24: 122 µg/m³, above the limitDec 25: 91 µg/m³, above the limitDec 26: 86 µg/m³, above the limitDec 27: 83 µg/m³, above the limitDec 28: 76 µg/m³, above the limitDec 29: 152 µg/m³, above the limitDec 30: 120 µg/m³, above the limitDec 31: 78 µg/m³, above the limit
  • above the limit
  • below the limit
  • too few readings for the day
  • no data from the station
Days above the limit with values (81)
  1. Jan 1 81
  2. Jan 2 90
  3. Jan 3 79
  4. Jan 4 86
  5. Jan 5 65
  6. Jan 6 82
  7. Jan 7 73
  8. Jan 8 82
  9. Jan 9 84
  10. Jan 12 55
  11. Jan 13 54
  12. Jan 14 56
  13. Jan 16 101
  14. Jan 17 56
  15. Jan 21 51
  16. Jan 22 52
  17. Jan 24 51
  18. Jan 25 59
  19. Jan 26 60
  20. Jan 28 55
  21. Jan 29 64
  22. Jan 30 66
  23. Jan 31 54
  24. Feb 1 56
  25. Feb 2 66
  26. Feb 7 57
  27. Feb 8 76
  28. Feb 9 96
  29. Feb 10 97
  30. Feb 11 94
  31. Feb 12 96
  32. Feb 13 73
  33. Feb 14 74
  34. Feb 15 64
  35. Feb 16 88
  36. Feb 17 90
  37. Feb 18 77
  38. Feb 19 68
  39. Feb 20 57
  40. Feb 21 53
  41. Feb 22 70
  42. Feb 23 74
  43. Feb 24 51
  44. Feb 27 53
  45. Feb 28 51
  46. Mar 1 63
  47. Mar 2 79
  48. Mar 3 74
  49. Mar 4 61
  50. Mar 6 57
  51. Mar 19 55
  52. Jun 23 52
  53. Aug 18 60
  54. Aug 21 50
  55. Sep 9 52
  56. Nov 10 58
  57. Nov 20 53
  58. Nov 21 57
  59. Nov 28 59
  60. Dec 5 71
  61. Dec 6 54
  62. Dec 9 73
  63. Dec 10 71
  64. Dec 11 71
  65. Dec 12 68
  66. Dec 13 52
  67. Dec 17 65
  68. Dec 18 72
  69. Dec 19 68
  70. Dec 20 104
  71. Dec 21 105
  72. Dec 22 66
  73. Dec 23 59
  74. Dec 24 122
  75. Dec 25 91
  76. Dec 26 86
  77. Dec 27 83
  78. Dec 28 76
  79. Dec 29 152
  80. Dec 30 120
  81. Dec 31 78

Values in µg/m³, limit 50 µg/m³.

Months of 2025

MonthDays above 50Highest dayNo readings
January23 above the number allowed1010
February22 above the number allowed970
March6 above the number allowed790
April0470
May0321
June1 above the number allowed520
July0410
August2 above the number allowed600
September1 above the number allowed520
October0470
November4 above the number allowed590
December22 above the number allowed1520

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 79 µg/m³ (21:00)050100150ThuFriSatSunMonTueWedhighest 110latest 79 (21:00)
measuredmodel estimate, not counted
Last 7 days, every hour: PM10 in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
22:0048model estimate, not counted
21:0078.6
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
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 2025 there were 97 such days.
  • WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2025 there were 97 such days.
  • EU from 2030: annual average 20 µg/m³. Average in 2025: 36 µg/m³.
  • WHO 2021: annual average 15 µg/m³. Average in 2025: 36 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 2025

DayAverageTimes the limit
Dec 29, 20251523.0 ×
Dec 24, 20251222.4 ×
Dec 30, 20251202.4 ×
Dec 21, 20251052.1 ×
Dec 20, 20251042.1 ×

Daily average in µg/m³, daily limit 50 µg/m³. Days with the same unverified value over many hours are not on this list.

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

samoEKO is a brand of samoLabs, Juelich.