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Air at the Brod-Rafinerija station

Brod, Republika Srpska

Network: Republic Hydrometeorological Institute of Republic of Srpska · Station code: BA0047A

This year, up to yesterday (October 6)

39 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.

4 days more than allowed

In 2025: 90 days above the limit, 35 allowed.

17 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.

Worst day: January 15, 2026, PM10 179 µg/m³ as a daily average, 3.6 times the limit.

Daily average for 271 of 279 days · data for 2026 not yet finally verified · Yardstick: limits in Republika Srpska (Uredba, Official Gazette RS 124/12, as given in the RHMZ RS report)

All figures by year and month

No data has arrived from this station since October 6, 2026 at 15:00

No reading for 32 hours.

We take the readings from the European Environment Agency (EEA), and no new values for this station are coming from there. The cause may lie with the station itself or with the data transmission.

This station is one of 6 stations in Republika Srpska from which no data has been arriving since October 6, 2026. The data stopped at almost the same time. When data from several stations stops within a few hours, the cause is probably shared, for example in the data transmission. Where exactly, we cannot tell from here.

Last reading: October 6, 2026 at 15:00
Measured then: NO₂ 9 µg/m³, O₃ 31.3 µg/m³, PM10 9.5 µg/m³, PM2.5 8.4 µg/m³, SO₂ 11.3 µg/m³

All outages of this station

Nearest station measuring now: Slavonski Brod-1, Slavonski Brod, Croatia, about 5 km away.

That reading is from another place. Your air may be better or worse.

Go to that station

How the air is changing

Over the last seven days there was more NO₂ and O₃ in the air than the week before.

  • PM10: average 9.5 µg/m³, week before 9.5 µg/m³
  • PM2.5: average 8.4 µg/m³, week before 8.4 µg/m³
  • NO₂: average 13.5 µg/m³, week before 8.5 µg/m³
  • O₃: average 13.2 µg/m³, week before 11.1 µg/m³
  • SO₂: average 11.2 µg/m³, week before 11 µg/m³

Last month there was less PM10, PM2.5, NO₂, O₃, and SO₂ in the air than the month before.

  • PM10: average 9.5 µg/m³, month before 16.3 µg/m³
  • PM2.5: average 8.4 µg/m³, month before 14.3 µg/m³
  • NO₂: average 9.3 µg/m³, month before 11.1 µg/m³
  • O₃: average 14 µg/m³, month before 21.2 µg/m³
  • SO₂: average 10.8 µg/m³, month before 13.1 µg/m³

Show

Particulate matter PM10

no measurement

Now

too few readings

Last 24 hours

measured in 0 % of hours

9.5

Last 7 daysµg/m³

measured in 95 % of hours · provisional

9.5

Last 30 daysµg/m³

measured in 99 % of hours · provisional

35.7

Last 12 monthsµg/m³

measured in 98 % of hours · provisional

Days in 2025: PM10, daily average above 50 µg/m³

90 days above the limit.

1102031JanJan 1: 123 µg/m³, above the limitJan 2: 86 µg/m³, above the limitJan 5: 77 µg/m³, above the limitJan 6: 120 µg/m³, above the limitJan 7: 144 µg/m³, above the limitJan 8: 58 µg/m³, above the limitJan 9: 175 µg/m³, above the limitJan 10: 73 µg/m³, above the limitJan 11: 57 µg/m³, above the limitJan 14: 68 µg/m³, above the limitJan 15: 66 µg/m³, above the limitJan 16: 56 µg/m³, above the limitJan 20: 51 µg/m³, above the limitJan 21: 56 µg/m³, above the limitJan 22: 113 µg/m³, above the limitJan 23: 141 µg/m³, above the limitJan 24: 68 µg/m³, above the limitJan 25: 53 µg/m³, above the limitJan 26: 78 µg/m³, above the limitJan 27: 101 µg/m³, above the limitJan 28: 84 µg/m³, above the limitJan 29: 58 µg/m³, above the limitJan 30: 74 µg/m³, above the limitJan 31: 64 µg/m³, above the limitFebFeb 1: 50 µg/m³, above the limitFeb 2: 51 µg/m³, above the limitFeb 3: 76 µg/m³, above the limitFeb 4: 85 µg/m³, above the limitFeb 5: 65 µg/m³, above the limitFeb 6: 93 µg/m³, above the limitFeb 7: 92 µg/m³, above the limitFeb 8: 58 µg/m³, above the limitFeb 9: 63 µg/m³, above the limitFeb 10: 53 µg/m³, above the limitFeb 11: 66 µg/m³, above the limitFeb 12: 54 µg/m³, above the limitFeb 13: 65 µg/m³, above the limitFeb 14: 54 µg/m³, above the limitFeb 17: 64 µg/m³, above the limitFeb 18: 74 µg/m³, above the limitFeb 19: 89 µg/m³, above the limitFeb 20: 75 µg/m³, above the limitFeb 21: 91 µg/m³, above the limitFeb 22: 63 µg/m³, above the limitFeb 23: 63 µg/m³, above the limitFeb 24: 82 µg/m³, above the limitFeb 25: 85 µg/m³, above the limitFeb 26: 72 µg/m³, above the limitMarMar 1: 59 µg/m³, above the limitMar 3: 52 µg/m³, above the limitMar 4: 76 µg/m³, above the limitMar 5: 61 µg/m³, above the limitMar 6: 61 µg/m³, above the limitMar 7: 59 µg/m³, above the limitMar 8: 69 µg/m³, above the limitMar 9: 70 µg/m³, above the limitMar 10: 59 µg/m³, above the limitMar 11: 58 µg/m³, above the limitMar 19: 70 µg/m³, above the limitMar 20: 57 µg/m³, above the limitMar 21: 51 µg/m³, above the limitAprMayJunJulAugSepOctOct 30: 54 µg/m³, above the limitNovNov 5: 63 µg/m³, above the limitNov 6: 50 µg/m³, above the limitNov 13: 58 µg/m³, above the limitNov 14: 82 µg/m³, above the limitNov 15: 62 µg/m³, above the limitNov 16: 86 µg/m³, above the limitNov 17: 64 µg/m³, above the limitNov 24: 97 µg/m³, above the limitNov 25: 52 µg/m³, above the limitNov 30: 81 µg/m³, above the limitDecDec 1: 77 µg/m³, above the limitDec 4: 53 µg/m³, above the limitDec 5: 52 µg/m³, above the limitDec 6: 57 µg/m³, above the limitDec 8: 62 µg/m³, above the limitDec 9: 101 µg/m³, above the limitDec 10: 106 µg/m³, above the limitDec 11: 71 µg/m³, above the limitDec 12: 65 µg/m³, above the limitDec 13: 50 µg/m³, above the limitDec 17: 63 µg/m³, above the limitDec 18: 116 µg/m³, above the limitDec 19: 110 µg/m³, above the limitDec 20: 78 µg/m³, above the limitDec 21: 57 µg/m³, above the limitDec 22: 51 µg/m³, above the limitDec 29: 58 µg/m³, above the limitDec 30: 51 µg/m³, above the limit
  • above the limit
  • below the limit
Days above the limit with values (90)
  1. Jan 1 123
  2. Jan 2 86
  3. Jan 5 77
  4. Jan 6 120
  5. Jan 7 144
  6. Jan 8 58
  7. Jan 9 175
  8. Jan 10 73
  9. Jan 11 57
  10. Jan 14 68
  11. Jan 15 66
  12. Jan 16 56
  13. Jan 20 51
  14. Jan 21 56
  15. Jan 22 113
  16. Jan 23 141
  17. Jan 24 68
  18. Jan 25 53
  19. Jan 26 78
  20. Jan 27 101
  21. Jan 28 84
  22. Jan 29 58
  23. Jan 30 74
  24. Jan 31 64
  25. Feb 1 50
  26. Feb 2 51
  27. Feb 3 76
  28. Feb 4 85
  29. Feb 5 65
  30. Feb 6 93
  31. Feb 7 92
  32. Feb 8 58
  33. Feb 9 63
  34. Feb 10 53
  35. Feb 11 66
  36. Feb 12 54
  37. Feb 13 65
  38. Feb 14 54
  39. Feb 17 64
  40. Feb 18 74
  41. Feb 19 89
  42. Feb 20 75
  43. Feb 21 91
  44. Feb 22 63
  45. Feb 23 63
  46. Feb 24 82
  47. Feb 25 85
  48. Feb 26 72
  49. Mar 1 59
  50. Mar 3 52
  51. Mar 4 76
  52. Mar 5 61
  53. Mar 6 61
  54. Mar 7 59
  55. Mar 8 69
  56. Mar 9 70
  57. Mar 10 59
  58. Mar 11 58
  59. Mar 19 70
  60. Mar 20 57
  61. Mar 21 51
  62. Oct 30 54
  63. Nov 5 63
  64. Nov 6 50
  65. Nov 13 58
  66. Nov 14 82
  67. Nov 15 62
  68. Nov 16 86
  69. Nov 17 64
  70. Nov 24 97
  71. Nov 25 52
  72. Nov 30 81
  73. Dec 1 77
  74. Dec 4 53
  75. Dec 5 52
  76. Dec 6 57
  77. Dec 8 62
  78. Dec 9 101
  79. Dec 10 106
  80. Dec 11 71
  81. Dec 12 65
  82. Dec 13 50
  83. Dec 17 63
  84. Dec 18 116
  85. Dec 19 110
  86. Dec 20 78
  87. Dec 21 57
  88. Dec 22 51
  89. Dec 29 58
  90. Dec 30 51

Values in µg/m³, limit 50 µg/m³.

Months of 2025

MonthDays above 50Highest dayNo readings
January24 above the number allowed1750
February24 above the number allowed930
March13 above the number allowed760
April0370
May0290
June0330
July0300
August0300
September0320
October1 above the number allowed540
November10 above the number allowed970
December18 above the number allowed1160

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 10 µg/m³, latest 9 µg/m³ (15:00)050100ThuFriSatSunMonTueWedhighest 10latest 9 (15:00)
measuredmodel estimate, not counted
Last 7 days, every hour: PM10 in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
22:0071model estimate, not counted
21:0068model estimate, not counted
20:0062model estimate, not counted
19:0048model estimate, not counted
18:0042model estimate, not counted
17:0034model estimate, not counted
16:0028model estimate, not counted
15:0030model estimate, not counted
14:0035model estimate, not counted
13:0042model estimate, not counted
12:0055model estimate, not counted
11:0081model estimate, not counted
10:0086model estimate, not counted
09:0081model estimate, not counted
08:0076model estimate, not counted
07:0074model estimate, not counted
06:0075model estimate, not counted
05:0072model estimate, not counted
04:0075model estimate, not counted
03:0076model estimate, not counted
02:0076model estimate, not counted
01:0076model estimate, not counted
Tuesday, 10/6
00:0076model estimate, not counted
23:0076model estimate, not counted
22:0076model estimate, not counted
21:0076model estimate, not counted
20:0076model estimate, not counted
19:0076model estimate, not counted
18:0076model estimate, not counted
17:0076model estimate, not counted
16:0076model estimate, not counted
15:009.5
14:009.4
13:009.5
12:009.5
11:009.5
10:009.3
09:009.3
08:009.3
07:009.5
06:009.6
05:009.4
04:009.4
03:009.5
02:009.5
01:009.4
Monday, 10/5
00:009.5
23:009.6
22:009.5
21:009.5
20:009.4
19:009.7
18:009.7
17:009.6
16:009.7
15:009.8
14:009.5
13:009.6
12:009.6
11:009.5
10:009.5
09:009.5
08:009.4
07:009.3
06:009.6
05:009.4
04:009.3
03:009.3
02:009.4
01:009.4
Sunday, 10/4
00:009.5
23:009.4
22:009.3
21:009.5
20:009.4
19:009.5
18:009.7
17:009.8
16:009.6
15:009.6
14:009.4
13:009.6
12:009.5
11:009.4
10:009.2
09:009.3
08:009.3
07:009.3
06:009.5
05:009.3
04:009.5
03:009.4
02:009.4
01:009.4
Saturday, 10/3
00:009.4
23:009.4
22:009.5
21:009.5
20:009.4
19:009.6
18:009.8
17:009.8
16:009.8
15:009.8
14:009.7
13:009.6
12:009.6
11:009.5
10:009.6
09:009.5
08:009.5
07:009.5
06:009.4
05:009.5
04:009.5
03:009.5
02:009.4
01:009.5
Friday, 10/2
00:009.6
23:009.4
22:009.4
21:009.6
20:009.4
19:009.6
18:009.7
17:009.6
16:009.8
15:009.8
14:009.6
13:009.8
12:009.6
11:009.5
10:009.6
09:009.5
08:009.6
07:009.4
06:009.4
05:009.5
04:009.6
03:009.5
02:009.4
01:009.6
Thursday, 10/1
00:009.5
23:009.5
22:009.6
21:009.6
20:009.5
19:009.6
18:009.7
17:009.7
16:009.9
15:009.7
14:009.7
13:009.5
12:009.5
11:009.4
10:009.5
09:009.5
08:009.4
07:009.3
06:009.4
05:009.5
04:009.5
03:009.5
02:009.4
01:009.4
Last 30 days, daily average: PM10 in µg/m³highest 10 µg/m³, latest 10 µg/m³0510159/99/169/239/30highest 10latest 10
too few readings
Last 30 days, daily average: PM10 in µg/m³
Values as a table
Dayµg/m³Note
Tue, 10/6too few readings
Mon, 10/59.5provisional
Sun, 10/49.5provisional
Sat, 10/39.6provisional
Fri, 10/29.5provisional
Thu, 10/19.5provisional
Wed, 9/309.6provisional
Tue, 9/299.6provisional
Mon, 9/289.6provisional
Sun, 9/279.5provisional
Sat, 9/269.4provisional
Fri, 9/259.5provisional
Thu, 9/249.4provisional
Wed, 9/239.4provisional
Tue, 9/229.4provisional
Mon, 9/219.5provisional
Sun, 9/209.6provisional
Sat, 9/199.6provisional
Fri, 9/189.6provisional
Thu, 9/179.6provisional
Wed, 9/169.6provisional
Tue, 9/159.6provisional
Mon, 9/149.4provisional
Sun, 9/139.6provisional
Sat, 9/129.6provisional
Fri, 9/119.5provisional
Thu, 9/109.5provisional
Wed, 9/99.4provisional
Tue, 9/89.4provisional
Mon, 9/79.5provisional
Last 12 months, monthly average: PM10 in µg/m³highest 70 µg/m³, latest 10 µg/m³0255075DecFebAprJunAugOcthighest 70latest 10
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 far9.528.5measured in 94 % of hours · provisional · year before: same days
September 20269.524measured in 100 % of hours · provisional
August 202616.325.6measured in 80 % of hours · provisional · 5 days without data from the station
July 202625.224.8measured in 100 % of hours · provisional
June 202622.726.8measured in 100 % of hours · provisional
May 202622.623.9measured in 100 % of hours · provisional
April 202627.527measured in 100 % of hours · provisional
March 202639.747measured in 100 % of hours · provisional
February 20265465.6measured in 99 % of hours · provisional
January 20267074measured in 100 % of hours · provisional
December 202559.261.1measured in 100 % of hours · verified
November 202548.161.7measured in 99 % of hours · verified

PM10 by year

Yardstick: limits in Republika Srpska (Uredba, Official Gazette RS 124/12, as given in the RHMZ RS report)

Measure2026*20252024
Days above 50 µg/m³ (allowed 35)39 above the number allowed90 above the number allowed61 above the number allowed
Annual average, µg/m³ (legal limit 40)31.7*39.837.7
Highest daily average, µg/m³179January 15175January 9139November 26
Highest hourly value, µg/m³405January 14394January 9382January 13
Hours measured98 %100 %100 %
Days without any reading from the station500

* 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.

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.

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 102 such days.
  • WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2025 there were 102 such days.
  • EU from 2030: annual average 20 µg/m³. Average in 2025: 40 µg/m³.
  • WHO 2021: annual average 15 µg/m³. Average in 2025: 40 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
Jan 9, 20251753.5 ×
Jan 7, 20251442.9 ×
Jan 23, 20251412.8 ×
Jan 1, 20251232.5 ×
Jan 6, 20251202.4 ×

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: 7

2 outages, 178 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

FromToDuration
Oct 6, 2026 15:00still ongoing32 hours
Aug 7, 2026 08:00Aug 13, 2026 10:006 days

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

Who is responsible

In Republika Srpska air quality is governed by the Air Protection Act (Official Gazette RS 124/11 and 46/17) and the Regulation on Air Quality Values (Official Gazette RS 124/12). The republic’s monitoring network is run by the Republic Hydrometeorological Institute (RHMZ RS), which publishes an air quality report every year.

We take the limit values from the RHMZ RS report for 2025, which cites the regulation. Unlike in the Federation of BiH, the hourly limit for nitrogen dioxide is 150 µg/m³, at most 18 times a year. As in the Federation, nitrogen dioxide also has a daily limit of 85 µg/m³ with no exceedance allowed. The regulation calls 500 µg/m³ of sulphur dioxide and 400 µg/m³ of nitrogen dioxide over three hours in a row a concentration dangerous to health.

We have not yet checked in the text of the law who in Republika Srpska must adopt a plan when a limit is exceeded, so we do not state it here.

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 Republic Hydrometeorological Institute of Republic of Srpska. 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 those of Republika Srpska (Uredba o vrijednostima kvaliteta vazduha, Official Gazette RS 124/12), as listed by RHMZ RS in its report for 2025. Unlike in the FBiH, the hourly limit for NO₂ is 150 µg/m³. 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.