Air at the Prijedor-Automatska Stanica station

Prijedor, Republika Srpska

Network: Republic Hydrometeorological Institute of Republic of Srpska · Station code: BA0048A

This year, up to yesterday (October 6)

54 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.

19 days more than allowed

Worst day: January 13, 2026, PM10 194 µg/m³ as a daily average, 3.9 times the limit.

Daily average for 268 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 3.8 µg/m³, O₃ 61.4 µg/m³, PM10 22.2 µg/m³, PM2.5 14.5 µg/m³, SO₂ 5.4 µg/m³

All outages of this station

Nearest station measuring now: Kutina-1, Kutina, Croatia, about 57 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 PM10, PM2.5, and NO₂ in the air than the week before.

PM10: average 47.6 µg/m³, week before 27.2 µg/m³
PM2.5: average 30.9 µg/m³, week before 16.9 µg/m³
NO₂: average 9.6 µg/m³, week before 7 µg/m³
O₃: average 25.1 µg/m³, week before 25.7 µg/m³
SO₂: average 4.2 µg/m³, week before 3.9 µg/m³

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
O₃: too few readings to compare
SO₂: too few readings to compare

Show

Particulate matter PM10

no measurement

Now

too few readings

Last 24 hours

measured in 0 % of hours

47.6

Last 7 daysµg/m³

measured in 90 % of hours · provisional

30.4

Last 30 daysµg/m³

measured in 95 % of hours · provisional

38.1

Last 12 monthsµg/m³

measured in 95 % of hours · provisional

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

31 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 (31)

Apr 4 57
Oct 17 54
Oct 18 58
Oct 21 71
Nov 5 53
Nov 6 62
Nov 7 59
Nov 8 55
Nov 12 58
Nov 13 89
Nov 14 88
Nov 15 85
Nov 16 117
Nov 30 83
Dec 1 101
Dec 2 74
Dec 3 54
Dec 7 52
Dec 8 60
Dec 9 79
Dec 10 105
Dec 11 98
Dec 12 70
Dec 17 66
Dec 18 127
Dec 19 154
Dec 20 54
Dec 28 51
Dec 29 83
Dec 30 66
Dec 31 85

Values in µg/m³, limit 50 µg/m³.

Months of 2025

Month	Days above 50	Average	Highest day
January
February
March	0	too few	44
April	1 above the number allowed	27	57
May	0	15	21
June	0	22	40
July	0	14	26
August	0	20	37
September	0	16	26
October	3 above the number allowed	33	71
November	10 above the number allowed	46	117
December	17 above the number allowed	61	154

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.

measuredmodel estimate, not countedday above the limit (daily average)

Last 7 days, every hour: PM10 in µg/m³

Values as a table

Hour to	µg/m³	Note
Wednesday, 10/7
22:00	67	model estimate, not counted
21:00	69	model estimate, not counted
20:00	70	model estimate, not counted
19:00	60	model estimate, not counted
18:00	41	model estimate, not counted
17:00	30	model estimate, not counted
16:00	26	model estimate, not counted
15:00	23	model estimate, not counted
14:00	25	model estimate, not counted
13:00	27	model estimate, not counted
12:00	29	model estimate, not counted
11:00	33	model estimate, not counted
10:00	34	model estimate, not counted
09:00	42	model estimate, not counted
08:00	49	model estimate, not counted
07:00	64	model estimate, not counted
06:00	81	model estimate, not counted
05:00	87	model estimate, not counted
04:00	100	model estimate, not counted
03:00	107	model estimate, not counted
02:00	114	model estimate, not counted
01:00	156	model estimate, not counted
Tuesday, 10/6
00:00	156	model estimate, not counted
23:00	156	model estimate, not counted
22:00	156	model estimate, not counted
21:00	156	model estimate, not counted
20:00	156	model estimate, not counted
19:00	156	model estimate, not counted
18:00	156	model estimate, not counted
17:00	156	model estimate, not counted
16:00	156	model estimate, not counted
15:00	22.2
14:00	25.6
13:00	40
12:00	62.9
11:00	61.6
10:00	51.5
09:00	40.2
08:00	37.4
07:00	29.3
06:00	25.9
04:00	28.9
03:00	55.5
02:00	45.3
01:00	74.4
Monday, 10/5
00:00	66.2
23:00	66.8
22:00	82.7
21:00	78.9
20:00	68.5
19:00	69.6
18:00	47.4
17:00	44.1
16:00	34.1
15:00	20.9
14:00	24.7
13:00	34.5
12:00	33.6
11:00	57.7
10:00	47.1
09:00	52.4
08:00	32.5
07:00	12.2
06:00	20.2
04:00	29.9
03:00	46.6
02:00	57.3
01:00	64.4
Sunday, 10/4
00:00	90.5
23:00	60.2
22:00	71.9
21:00	72
20:00	148.2
19:00	130.4
18:00	17.6
17:00	12.7
16:00	19.8
15:00	14.8
14:00	14
13:00	18.5
12:00	38.2
11:00	60.9
10:00	38.9
09:00	27.2
08:00	25
07:00	33.5
06:00	46.4
04:00	31.2
03:00	43.1
02:00	50.3
01:00	61.9
Saturday, 10/3
00:00	56.9
23:00	46.1
22:00	48.4
21:00	64.2
20:00	72.7
19:00	225.7
18:00	81.3
17:00	68.5
16:00	68.6
15:00	51.8
14:00	45.7
13:00	39.4
12:00	40.3
11:00	52.8
10:00	57.6
09:00	28.9
08:00	20
07:00	20.6
06:00	35.9
04:00	38.2
03:00	30.3
02:00	48
01:00	65.1
Friday, 10/2
00:00	59.7
23:00	90
22:00	61.8
21:00	55.8
20:00	71
19:00	79.1
18:00	76.2
17:00	55.9
16:00	39.1
15:00	28.3
14:00	23.9
13:00	36.6
12:00	57
11:00	89.3
10:00	48.2
09:00	27.2
08:00	32.2
07:00	36.5
06:00	26.9
04:00	26.8
03:00	34.9
02:00	37.2
01:00	46.8
Thursday, 10/1
00:00	28.6
23:00	32.1
22:00	77.2
21:00	59.4
20:00	62.2
19:00	161.5
18:00	81.7
17:00	69.1
16:00	61.7
15:00	22.1
14:00	25.4
13:00	20.3
12:00	20
11:00	36.8
10:00	60.4
09:00	39.9
08:00	23
07:00	99.8
06:00	18.6
04:00	27.7
03:00	31.9
02:00	25.2
01:00	25.7

day above the limittoo few readingslegal daily limit, 50 µg/m³

Last 30 days, daily average: PM10 in µg/m³ · 3 days above the limit

Values as a table

Day	µg/m³	Note
Tue, 10/6		too few readings
Mon, 10/5	47.5	provisional
Sun, 10/4	49	provisional
Sat, 10/3	56.8	above the limit · provisional
Fri, 10/2	49.6	provisional
Thu, 10/1	48.3	provisional
Wed, 9/30	37.3	provisional
Tue, 9/29	47.4	provisional
Mon, 9/28	38.4	provisional
Sun, 9/27	32.8	provisional
Sat, 9/26	23.5	provisional
Fri, 9/25	10.1	provisional
Thu, 9/24	21.5	provisional
Wed, 9/23	16.5	provisional
Tue, 9/22	20.9	provisional
Mon, 9/21	26.9	provisional
Sun, 9/20	26	provisional
Sat, 9/19	19.6	provisional
Fri, 9/18	24.1	provisional
Thu, 9/17	12.3	provisional
Wed, 9/16	26.1	provisional
Tue, 9/15	21.3	provisional
Mon, 9/14	15	provisional
Sun, 9/13	14	provisional
Sat, 9/12	11.5	provisional
Fri, 9/11	5.4	provisional
Thu, 9/10	13.4	provisional
Wed, 9/9	38.4	provisional
Tue, 9/8	69	above the limit · provisional
Mon, 9/7	50.9	above the limit · provisional

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

Month	µg/m³	a year earlier	Note
October 2026 so far	49.4	24.3	measured in 90 % of hours · provisional · year before: same days
September 2026	28.9	15.7	measured in 96 % of hours · provisional
August 2026	too few readings	19.9	measured in 68 % of hours · provisional · 8 days without data from the station
July 2026	16.6	14.4	measured in 96 % of hours · provisional
June 2026	12.8	22.1	measured in 96 % of hours · provisional
May 2026	13.1	14.7	measured in 96 % of hours · provisional
April 2026	25.1	27.2	measured in 96 % of hours · provisional
March 2026	49	too few readings	measured in 99 % of hours · provisional
February 2026	56.8		measured in 99 % of hours · provisional
January 2026	73.4		measured in 100 % of hours · provisional
December 2025	61.1		measured in 99 % of hours · verified
November 2025	46.1		measured in 100 % of hours · verified

PM10 by year

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

Measure	2026*	2025
Days above 50 µg/m³ (allowed 35)	54 above the number allowed	≥ 31²
Annual average, µg/m³ (legal limit 40)	34.8*	too few
Highest daily average, µg/m³	194January 13	154December 19
Highest hourly value, µg/m³	296February 25	259December 18
Hours measured	94 %	76 %
Days without any reading from the station	8	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.

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.

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 38 such days.
WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2025 there were 38 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 2025

Day	Average	Times the limit
Dec 19, 2025	154	3.1 ×
Dec 18, 2025	127	2.5 ×
Nov 16, 2025	117	2.3 ×
Dec 10, 2025	105	2.1 ×
Dec 1, 2025	101	2.0 ×

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

Particulate matter PM2.5

no measurement

Now

too few readings

Last 24 hours

measured in 0 % of hours

30.9

Last 7 daysµg/m³

measured in 90 % of hours · provisional

17.5

Last 30 daysµg/m³

measured in 95 % of hours · provisional

30.4

Last 12 monthsµg/m³

measured in 95 % of hours · provisional

Months of 2025

Month	Average	Highest day
January
February
March	too few	35
April	18	39
May	9	16
June	12	21
July	9	15
August	11	18
September	10	19
October	25	47
November	40	98
December	57	146

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.

measured

Last 7 days, every hour: PM2.5 in µg/m³

Values as a table

Hour to	µg/m³	Note
Tuesday, 10/6
15:00	14.5
14:00	14.7
13:00	20.4
12:00	42
11:00	49.4
10:00	44.9
09:00	37.8
08:00	35.1
07:00	27.8
06:00	25
04:00	28.1
03:00	51.3
02:00	42.9
01:00	67.6
Monday, 10/5
00:00	56.4
23:00	51.5
22:00	58.2
21:00	55.3
20:00	48.3
19:00	41.1
18:00	31.3
17:00	19.7
16:00	14.7
15:00	12.9
14:00	13.8
13:00	18.9
12:00	24.2
11:00	35.5
10:00	34.6
09:00	39.1
08:00	30.4
07:00	12.2
06:00	20
04:00	28.1
03:00	41.2
02:00	47.2
01:00	53.3
Sunday, 10/4
00:00	73
23:00	46.1
22:00	51.8
21:00	52.9
20:00	65
19:00	47.8
18:00	9.8
17:00	6.8
16:00	8.8
15:00	8.3
14:00	8.5
13:00	11.2
12:00	19.4
11:00	28.4
10:00	32.7
09:00	26.4
08:00	24.5
07:00	31.9
06:00	41.9
04:00	29.5
03:00	38.5
02:00	43.6
01:00	49.8
Saturday, 10/3
00:00	42.9
23:00	33.8
22:00	36.5
21:00	46.7
20:00	56.9
19:00	71
18:00	35.2
17:00	19.1
16:00	20.2
15:00	15
14:00	19.5
13:00	24.6
12:00	22.2
11:00	38.3
10:00	41.9
09:00	27.3
08:00	19.9
07:00	20
06:00	34.9
04:00	37.2
03:00	28.8
02:00	42.4
01:00	53.3
Friday, 10/2
00:00	44.1
23:00	61
22:00	43.4
21:00	44.2
20:00	43.2
19:00	30.8
18:00	21.8
17:00	22.5
16:00	12.3
15:00	21.7
14:00	11.4
13:00	17.2
12:00	39.6
11:00	40.5
10:00	34.2
09:00	24.6
08:00	28.5
07:00	29.3
06:00	23.1
04:00	24.9
03:00	30.9
02:00	31.1
01:00	41.3
Thursday, 10/1
00:00	23.9
23:00	26
22:00	55.2
21:00	47.3
20:00	36.2
19:00	48.4
18:00	23.1
17:00	22.2
16:00	18.4
15:00	12.1
14:00	13.7
13:00	12.9
12:00	14.3
11:00	28.7
10:00	47.2
09:00	36.5
08:00	20.6
07:00	79.3
06:00	16.3
04:00	22
03:00	26.7
02:00	21
01:00	21.3

too few readings

Last 30 days, daily average: PM2.5 in µg/m³

Values as a table

Day	µg/m³	Note
Tue, 10/6		too few readings
Mon, 10/5	34.2	provisional
Sun, 10/4	32.9	provisional
Sat, 10/3	34.2	provisional
Fri, 10/2	31.4	provisional
Thu, 10/1	29.3	provisional
Wed, 9/30	20.5	provisional
Tue, 9/29	26.5	provisional
Mon, 9/28	24.8	provisional
Sun, 9/27	22.5	provisional
Sat, 9/26	15.6	provisional
Fri, 9/25	7.3	provisional
Thu, 9/24	12.2	provisional
Wed, 9/23	9.2	provisional
Tue, 9/22	8.8	provisional
Mon, 9/21	13.1	provisional
Sun, 9/20	17.7	provisional
Sat, 9/19	11.1	provisional
Fri, 9/18	12.5	provisional
Thu, 9/17	7.2	provisional
Wed, 9/16	12.9	provisional
Tue, 9/15	8.5	provisional
Mon, 9/14	7.6	provisional
Sun, 9/13	9.4	provisional
Sat, 9/12	7.5	provisional
Fri, 9/11	4.7	provisional
Thu, 9/10	10.6	provisional
Wed, 9/9	20.8	provisional
Tue, 9/8	24	provisional
Mon, 9/7	18.7	provisional

Last 12 monthsthis month so fara year earlierlegal annual limit, 25 µg/m³month with days without data from the station

Last 12 months, monthly average: PM2.5 in µg/m³

Values as a table

Month	µg/m³	a year earlier	Note
October 2026 so far	32.8	18.6	measured in 90 % of hours · provisional · year before: same days
September 2026	14	10	measured in 96 % of hours · provisional
August 2026	too few readings	10.8	measured in 68 % of hours · provisional · 8 days without data from the station
July 2026	10	8.5	measured in 96 % of hours · provisional
June 2026	8.3	12	measured in 96 % of hours · provisional
May 2026	8.4	9.3	measured in 96 % of hours · provisional
April 2026	18.4	18	measured in 96 % of hours · provisional
March 2026	38	too few readings	measured in 99 % of hours · provisional
February 2026	47.3		measured in 99 % of hours · provisional
January 2026	71.3		measured in 100 % of hours · provisional
December 2025	57.2		measured in 99 % of hours · verified
November 2025	40.2		measured in 100 % of hours · verified

PM2.5 by year

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

Measure	2026*	2025
Annual average, µg/m³ (legal limit 25)	26.4*	too few
Highest daily average, µg/m³	192January 13	146December 19
Highest hourly value, µg/m³	280January 13	258December 18
Hours measured	94 %	76 %
Days without any reading from the station	8	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.

■ and a figure in red: more than is allowed for the whole year.

Compared with the new EU rules and the WHO recommendation

EU from 2030: daily 25 µg/m³, 18 days allowed. In 2025 there were 77 such days.
WHO 2021: daily 15 µg/m³, at most three to four days a year. In 2025 there were 132 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.

Nitrogen dioxide NO₂

no measurement

Now

too few readings

Last 24 hours

measured in 0 % of hours

9.6

Last 7 daysµg/m³

measured in 90 % of hours · provisional

7.2

Last 30 daysµg/m³

measured in 95 % of hours · provisional

Last 12 monthsµg/m³

measured in 95 % of hours · provisional

Days in 2025: 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

Months of 2025

Month	Average	Highest day
January	13	22
February	14	20
March	10	19
April	7	13
May	6	10
June	6	8
July	6	8
August	7	10
September	6	9
October	9	14
November	10	17
December	11	22

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.

measuredmodel estimate, not counted

Last 7 days, every hour: NO₂ in µg/m³

Values as a table

Hour to	µg/m³	Note
Wednesday, 10/7
22:00	24	model estimate, not counted
21:00	27	model estimate, not counted
20:00	26	model estimate, not counted
19:00	23	model estimate, not counted
18:00	14	model estimate, not counted
17:00	9	model estimate, not counted
16:00	8	model estimate, not counted
15:00	8	model estimate, not counted
14:00	8	model estimate, not counted
13:00	9	model estimate, not counted
12:00	10	model estimate, not counted
11:00	12	model estimate, not counted
10:00	14	model estimate, not counted
09:00	23	model estimate, not counted
08:00	24	model estimate, not counted
07:00	20	model estimate, not counted
06:00	14	model estimate, not counted
05:00	11	model estimate, not counted
04:00	11	model estimate, not counted
03:00	11	model estimate, not counted
02:00	13	model estimate, not counted
01:00	16	model estimate, not counted
Tuesday, 10/6
00:00	16	model estimate, not counted
23:00	16	model estimate, not counted
22:00	16	model estimate, not counted
21:00	16	model estimate, not counted
20:00	16	model estimate, not counted
19:00	16	model estimate, not counted
18:00	16	model estimate, not counted
17:00	16	model estimate, not counted
16:00	16	model estimate, not counted
15:00	3.8
14:00	4.4
13:00	6.1
12:00	11.7
11:00	16.7
10:00	14.5
09:00	12.6
08:00	11.5
07:00	8.7
06:00	6.7
04:00	4.1
03:00	6.9
02:00	6.8
01:00	9.5
Monday, 10/5
00:00	11.7
23:00	14.8
22:00	16.7
21:00	22.7
20:00	28
19:00	19.6
18:00	11.1
17:00	9.1
16:00	7
15:00	4.4
14:00	4.4
13:00	6.2
12:00	6.6
11:00	9
10:00	7.9
09:00	9.5
08:00	9.1
07:00	8.6
06:00	4.5
04:00	5.3
03:00	8.3
02:00	8.7
01:00	10.6
Sunday, 10/4
00:00	13.8
23:00	12.2
22:00	14.7
21:00	24.6
20:00	25.6
19:00	21.9
18:00	6.6
17:00	3.1
16:00	2.5
15:00	2.7
14:00	3.1
13:00	3.3
12:00	4.7
11:00	4.8
10:00	4.3
09:00	4
08:00	5.2
07:00	4.7
06:00	4.2
04:00	5.2
03:00	7.9
02:00	8.6
01:00	12.3
Saturday, 10/3
00:00	13.4
23:00	14.3
22:00	17.8
21:00	21.8
20:00	35.1
19:00	25.6
18:00	8
17:00	4.2
16:00	3.4
15:00	4.7
14:00	4.6
13:00	5.1
12:00	6.1
11:00	10.9
10:00	9.7
09:00	6.9
08:00	6.9
07:00	6.4
06:00	5.5
04:00	4.8
03:00	6.6
02:00	13.5
01:00	11.6
Friday, 10/2
00:00	13.9
23:00	18.3
22:00	20.8
21:00	24.5
20:00	30
19:00	21.6
18:00	7.2
17:00	3.5
16:00	3.4
15:00	3.3
14:00	3.4
13:00	7.1
12:00	10.9
11:00	11
10:00	10.3
09:00	7.6
08:00	7.5
07:00	6.2
06:00	4.4
04:00	3.9
03:00	3.8
02:00	6.1
01:00	6.5
Thursday, 10/1
00:00	7.3
23:00	10
22:00	16.6
21:00	24.8
20:00	28
19:00	25.7
18:00	7.9
17:00	4.1
16:00	4.8
15:00	3.3
14:00	4.8
13:00	3.7
12:00	3.9
11:00	11.2
10:00	13.1
09:00	7.8
08:00	5.1
07:00	5.3
06:00	4
04:00	4.2
03:00	4.5
02:00	4.1
01:00	5.9

too few readings

Last 30 days, daily average: NO₂ in µg/m³

Values as a table

Day	µg/m³	Note
Tue, 10/6		too few readings
Mon, 10/5	10.6	provisional
Sun, 10/4	8.7	provisional
Sat, 10/3	10.7	provisional
Fri, 10/2	10.2	provisional
Thu, 10/1	9.1	provisional
Wed, 9/30	8.6	provisional
Tue, 9/29	8.9	provisional
Mon, 9/28	8.9	provisional
Sun, 9/27	6.3	provisional
Sat, 9/26	6.7	provisional
Fri, 9/25	5.9	provisional
Thu, 9/24	5.7	provisional
Wed, 9/23	6.7	provisional
Tue, 9/22	5.7	provisional
Mon, 9/21	6	provisional
Sun, 9/20	5.9	provisional
Sat, 9/19	5.8	provisional
Fri, 9/18	6.7	provisional
Thu, 9/17	4.9	provisional
Wed, 9/16	7.1	provisional
Tue, 9/15	6.5	provisional
Mon, 9/14	6.2	provisional
Sun, 9/13	5.4	provisional
Sat, 9/12	6.2	provisional
Fri, 9/11	4.5	provisional
Thu, 9/10	5.6	provisional
Wed, 9/9	7.5	provisional
Tue, 9/8	7.8	provisional
Mon, 9/7	9.3	provisional

Last 12 monthsthis month so fara year earliermonth with days without data from the station

Last 12 months, monthly average: NO₂ in µg/m³

Values as a table

Month	µg/m³	a year earlier	Note
October 2026 so far	9.8	7.5	measured in 90 % of hours · provisional · year before: same days
September 2026	6.7	6.1	measured in 96 % of hours · provisional
August 2026	too few readings	6.8	measured in 68 % of hours · provisional · 8 days without data from the station
July 2026	5.2	5.6	measured in 96 % of hours · provisional
June 2026	4.7	5.7	measured in 96 % of hours · provisional
May 2026	5.5	6	measured in 96 % of hours · provisional
April 2026	7.9	7.4	measured in 96 % of hours · provisional
March 2026	11.4	10.4	measured in 99 % of hours · provisional
February 2026	13.2	13.5	measured in 99 % of hours · provisional
January 2026	15.2	12.7	measured in 100 % of hours · provisional
December 2025	11	11.7	measured in 99 % of hours · verified
November 2025	10.4	10	measured in 100 % of hours · verified

NO₂ by year

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

Measure	2026*	2025	2024
Days above 85 µg/m³ (none allowed)	0	0	0²
Hours above 150 µg/m³ (allowed 18)	0	0	0²
Hours above 400 µg/m³, three hours in a row (concentration dangerous to health)	0	0	0
Annual average, µg/m³ (legal limit 40)	8.6*	8.8	too few
Highest daily average, µg/m³	40January 13	22January 6	24December 31
Highest hourly value, µg/m³	105January 13	55January 6	43December 27
Hours measured	94 %	97 %	73 %
Days without any reading from the station	8	0	1

* 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 concentration dangerous to health: every such hour is in red.

Compared with the new EU rules and the WHO recommendation

EU from 2030: daily 50 µg/m³, 18 days allowed. In 2025 there were 0 such days.
WHO 2021: daily 25 µg/m³, at most three to four days a year. In 2025 there were 0 such days.
EU from 2030: annual average 20 µg/m³. Average in 2025: 9 µg/m³.
WHO 2021: annual average 10 µg/m³. Average in 2025: 9 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.

Ozone O₃

no measurement

Now

too few readings

Last 24 hours

measured in 0 % of hours

25.1

Last 7 daysµg/m³

measured in 90 % of hours · provisional

26.9

Last 30 daysµg/m³

measured in 95 % of hours · provisional

too few readings

Last 12 months

measured in 80 % of hours · 1 month with too few readings · provisional

Days in 2025: O₃, 8-hour average above 120 µg/m³

No measured day above the limit.

above the limit
below the limit
too few readings for the day
no O₃ data in the EEA database

Months of 2025

Month	Days above 120	Average	Highest 8 h
January	0	39	67
February	0	40	69
March	0	too few	83
April	0	39	77
May	0	40	86
June	0	too few	88
July	0	too few	79
August	0	42	90
September	0	too few
October
November
December	0	9	27

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.

measuredmodel estimate, not counted

Last 7 days, every hour: O₃ in µg/m³

Values as a table

Hour to	µg/m³	Note
Wednesday, 10/7
22:00	48	model estimate, not counted
21:00	55	model estimate, not counted
20:00	62	model estimate, not counted
19:00	65	model estimate, not counted
18:00	75	model estimate, not counted
17:00	85	model estimate, not counted
16:00	89	model estimate, not counted
15:00	91	model estimate, not counted
14:00	90	model estimate, not counted
13:00	88	model estimate, not counted
12:00	70	model estimate, not counted
11:00	54	model estimate, not counted
10:00	44	model estimate, not counted
09:00	36	model estimate, not counted
08:00	32	model estimate, not counted
07:00	29	model estimate, not counted
06:00	28	model estimate, not counted
05:00	27	model estimate, not counted
04:00	29	model estimate, not counted
03:00	32	model estimate, not counted
02:00	34	model estimate, not counted
01:00	43	model estimate, not counted
Tuesday, 10/6
00:00	43	model estimate, not counted
23:00	43	model estimate, not counted
22:00	43	model estimate, not counted
21:00	43	model estimate, not counted
20:00	43	model estimate, not counted
19:00	43	model estimate, not counted
18:00	43	model estimate, not counted
17:00	43	model estimate, not counted
16:00	43	model estimate, not counted
15:00	61.4
14:00	61.8
13:00	50
12:00	28.5
11:00	13.3
10:00	7.7
09:00	6.3
08:00	5.5
07:00	7.1
06:00	7.5
04:00	5.5
03:00	5.4
02:00	6.7
01:00	8.3
Monday, 10/5
00:00	8.5
23:00	10.3
22:00	13.8
21:00	11.2
20:00	14.8
19:00	36.9
18:00	52
17:00	56.5
16:00	61.2
15:00	59.9
14:00	55.7
13:00	48.6
12:00	35.1
11:00	20.2
10:00	13.3
09:00	6.5
08:00	5.4
07:00	6
06:00	6.7
04:00	6.9
03:00	7.3
02:00	7.1
01:00	5.9
Sunday, 10/4
00:00	7.2
23:00	16
22:00	20.5
21:00	11.6
20:00	18.8
19:00	38.3
18:00	60
17:00	64.5
16:00	63.7
15:00	63.2
14:00	62.9
13:00	54.5
12:00	42.9
11:00	27
10:00	14.8
09:00	10.3
08:00	6.8
07:00	5.5
06:00	6.4
04:00	6.5
03:00	6.1
02:00	8.9
01:00	10.1
Saturday, 10/3
00:00	9.8
23:00	16.1
22:00	16.3
21:00	15.8
20:00	11.2
19:00	37.7
18:00	59
17:00	64.8
16:00	65.1
15:00	64.1
14:00	58.3
13:00	53
12:00	40.5
11:00	20.9
10:00	9.1
09:00	6.3
08:00	5.1
07:00	7.7
06:00	7.5
04:00	5.2
03:00	6.1
02:00	5.7
01:00	7
Friday, 10/2
00:00	6.5
23:00	12.2
22:00	11
21:00	13
20:00	14.7
19:00	36.1
18:00	57.2
17:00	64.5
16:00	61.8
15:00	57.7
14:00	55.1
13:00	49.8
12:00	37.6
11:00	22.5
10:00	9.6
09:00	6.6
08:00	5.5
07:00	5.5
06:00	6.2
04:00	8.6
03:00	7.2
02:00	9.8
01:00	11.1
Thursday, 10/1
00:00	14.2
23:00	18.3
22:00	14.7
21:00	13.3
20:00	16.2
19:00	32.9
18:00	55.5
17:00	61.5
16:00	61.9
15:00	59.6
14:00	54.3
13:00	48.5
12:00	43.7
11:00	18.3
10:00	7.5
09:00	5.3
08:00	4.4
07:00	6.4
06:00	5.3
04:00	6.2
03:00	7.1
02:00	6.8
01:00	11.9

too few readingstarget value, 120 µg/m³

Last 30 days, highest 8-hour average of the day: O₃ in µg/m³

Values as a table

Day	µg/m³	Note
Tue, 10/6		too few readings
Mon, 10/5	50.7	provisional
Sun, 10/4	56.2	provisional
Sat, 10/3	55.3	provisional
Fri, 10/2	52.5	provisional
Thu, 10/1	52.2	provisional
Wed, 9/30	55	provisional
Tue, 9/29	52.9	provisional
Mon, 9/28	53.3	provisional
Sun, 9/27	52.8	provisional
Sat, 9/26	44.4	provisional
Fri, 9/25	40	provisional
Thu, 9/24	42.7	provisional
Wed, 9/23	40.5	provisional
Tue, 9/22	44.1	provisional
Mon, 9/21	43.2	provisional
Sun, 9/20	53.2	provisional
Sat, 9/19	49	provisional
Fri, 9/18	47.2	provisional
Thu, 9/17	45.6	provisional
Wed, 9/16	55.7	provisional
Tue, 9/15	47	provisional
Mon, 9/14	42.3	provisional
Sun, 9/13	55.7	provisional
Sat, 9/12	46.8	provisional
Fri, 9/11	21.5	provisional
Thu, 9/10	26	provisional
Wed, 9/9	61.3	provisional
Tue, 9/8	69.5	provisional
Mon, 9/7	65.3	provisional

Last 12 monthsthis month so fara year earliermonth with days without data from the station

Last 12 months, monthly average: O₃ in µg/m³

Values as a table

Month	µg/m³	a year earlier	Note
October 2026 so far	24.7		measured in 90 % of hours · provisional
September 2026	30.3	too few readings	measured in 96 % of hours · provisional
August 2026	too few readings	42.3	measured in 68 % of hours · provisional · 8 days without data from the station
July 2026	41.6	too few readings	measured in 96 % of hours · provisional
June 2026	37.5	too few readings	measured in 96 % of hours · provisional
May 2026	39.4	39.9	measured in 96 % of hours · provisional
April 2026	36.5	38.9	measured in 96 % of hours · provisional
March 2026	28.8	too few readings	measured in 99 % of hours · provisional
February 2026	18.5	39.6	measured in 99 % of hours · provisional
January 2026	17.7	39.5	measured in 100 % of hours · provisional
December 2025	9.1	33.2	measured in 96 % of hours · verified
November 2025	too few readings	34.7

O₃ by year

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

Measure	2026*	2025	2024
Days with 8-hour average above 120 µg/m³ (target value 25)	0	0²	0²
Annual average, µg/m³	32*	too few	too few
Highest 8-hour average, µg/m³	83July 30	90August 10	94July 10
Hours measured	94 %	61 %	73 %
Days without any reading from the station	8	0	1

* 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.

Sulphur dioxide SO₂

no measurement

Now

too few readings

Last 24 hours

measured in 0 % of hours

4.2

Last 7 daysµg/m³

measured in 90 % of hours · provisional

Last 30 daysµg/m³

measured in 95 % of hours · provisional

4.1

Last 12 monthsµg/m³

measured in 95 % of hours · provisional

Days in 2025: SO₂, daily average above 125 µg/m³

No measured day above the limit.

above the limit
below the limit
too few readings for the day

Months of 2025

Month	Average	Highest day
January	7	9
February	7	11
March	7	9
April	7	8
May	8	8
June	8	10
July	9	10
August	10	11
September	10	10
October	10	11
November	10	11
December	3	10

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.

measured

Last 7 days, every hour: SO₂ in µg/m³

Values as a table

Hour to	µg/m³	Note
Tuesday, 10/6
15:00	5.4
14:00	5.5
13:00	4.8
12:00	3.8
11:00	3.9
10:00	4
09:00	4.1
08:00	3.9
07:00	3.8
06:00	3.8
04:00	3.8
03:00	3.5
02:00	3.1
01:00	4
Monday, 10/5
00:00	3.8
23:00	3.8
22:00	4
21:00	3.8
20:00	3.9
19:00	4.9
18:00	5.5
17:00	5.5
16:00	5.7
15:00	5.1
14:00	4.5
13:00	4.2
12:00	4
11:00	3.9
10:00	3.5
09:00	3.4
08:00	3.3
07:00	3.7
06:00	3.6
04:00	3.6
03:00	3.8
02:00	3.7
01:00	3.6
Sunday, 10/4
00:00	3.5
23:00	3.6
22:00	3.9
21:00	3.6
20:00	4.2
19:00	6.8
18:00	7.1
17:00	7.3
16:00	6.5
15:00	5.8
14:00	5.9
13:00	4.6
12:00	3.1
11:00	3.6
10:00	3.3
09:00	3.3
08:00	3.5
07:00	3.5
06:00	3.4
04:00	3.4
03:00	3.2
02:00	3.6
01:00	3.7
Saturday, 10/3
00:00	3.7
23:00	3.4
22:00	3.6
21:00	3.6
20:00	3.8
19:00	4.3
18:00	4.9
17:00	5.8
16:00	5.8
15:00	4.9
14:00	4.9
13:00	4.6
12:00	3.9
11:00	3.3
10:00	3.4
09:00	3.4
08:00	3.4
07:00	3.4
06:00	3.2
04:00	3.5
03:00	3.4
02:00	3.4
01:00	3.3
Friday, 10/2
00:00	3.5
23:00	3.5
22:00	3.5
21:00	3.7
20:00	3.9
19:00	6.3
18:00	6.8
17:00	5.4
16:00	6
15:00	5
14:00	5.3
13:00	4.8
12:00	3.7
11:00	3.5
10:00	3.5
09:00	3.4
08:00	3.2
07:00	3.5
06:00	3.6
04:00	3.4
03:00	3.5
02:00	3.7
01:00	3.4
Thursday, 10/1
00:00	3.6
23:00	3.7
22:00	3.6
21:00	3.8
20:00	4.1
19:00	3.9
18:00	4.6
17:00	6.6
16:00	7
15:00	6.7
14:00	6
13:00	5.1
12:00	4.6
11:00	3.9
10:00	3.5
09:00	3.9
08:00	4.1
07:00	3.8
06:00	3.5
04:00	3.4
03:00	3.8
02:00	3.7
01:00	3.9

too few readings

Last 30 days, daily average: SO₂ in µg/m³

Values as a table

Day	µg/m³	Note
Tue, 10/6		too few readings
Mon, 10/5	4.1	provisional
Sun, 10/4	4.3	provisional
Sat, 10/3	4	provisional
Fri, 10/2	4.2	provisional
Thu, 10/1	4.4	provisional
Wed, 9/30	4.1	provisional
Tue, 9/29	3.7	provisional
Mon, 9/28	4.6	provisional
Sun, 9/27	4.6	provisional
Sat, 9/26	3.5	provisional
Fri, 9/25	3.6	provisional
Thu, 9/24	3.6	provisional
Wed, 9/23	3.5	provisional
Tue, 9/22	3.5	provisional
Mon, 9/21	3.7	provisional
Sun, 9/20	3.6	provisional
Sat, 9/19	3.7	provisional
Fri, 9/18	4.2	provisional
Thu, 9/17	4.7	provisional
Wed, 9/16	4.8	provisional
Tue, 9/15	4.7	provisional
Mon, 9/14	3.8	provisional
Sun, 9/13	3.4	provisional
Sat, 9/12	3.5	provisional
Fri, 9/11	3.6	provisional
Thu, 9/10	3.8	provisional
Wed, 9/9	4.3	provisional
Tue, 9/8	4.4	provisional
Mon, 9/7	4.1	provisional

Last 12 monthsthis month so fara year earliermonth with days without data from the station

Last 12 months, monthly average: SO₂ in µg/m³

Values as a table

Month	µg/m³	a year earlier	Note
October 2026 so far	4.2	9.6	measured in 90 % of hours · provisional · year before: same days
September 2026	3.9	9.6	measured in 96 % of hours · provisional
August 2026	too few readings	9.7	measured in 66 % of hours · provisional · 8 days without data from the station
July 2026	3.5	9.1	measured in 96 % of hours · provisional
June 2026	3.2	8.3	measured in 96 % of hours · provisional
May 2026	2.8	7.6	measured in 96 % of hours · provisional
April 2026	2.2	7	measured in 96 % of hours · provisional
March 2026	2.1	6.6	measured in 99 % of hours · provisional
February 2026	2.5	7.3	measured in 99 % of hours · provisional
January 2026	3	7.1	measured in 100 % of hours · provisional
December 2025	3.3	6.7	measured in 99 % of hours · verified
November 2025	10.1	6.2	measured in 100 % of hours · verified

SO₂ by year

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

Measure	2026*	2025	2024
Days above 125 µg/m³ (allowed 3)	0	0	0²
Hours above 350 µg/m³ (allowed 24)	0	0	0²
Hours above 500 µg/m³, three hours in a row (concentration dangerous to health)	0	0	0
Annual average, µg/m³ (legal limit 50)	2.9*	8	too few
Highest daily average, µg/m³	5January 23	11November 25	10July 22
Highest hourly value, µg/m³	15January 19	121December 9	129July 22
Hours measured	94 %	97 %	71 %
Days without any reading from the station	8	0	1

* 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 concentration dangerous to health: every such hour is in red.

Compared with the new EU rules and the WHO recommendation

EU from 2030: daily 50 µg/m³, 18 days allowed. In 2025 there were 0 such days.
WHO 2021: daily 40 µg/m³, at most three to four days a year. In 2025 there were 0 such days.
EU from 2030: annual average 20 µg/m³. Average in 2025: 8 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.

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: 10

2 outages, 249 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

From	To	Duration
Oct 6, 2026 15:00	still ongoing	32 hours
Aug 4, 2026 13:00	Aug 13, 2026 14:00	9 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

How to cite this page

Name samoEKO as the source and link to this page. The readings come from official stations, so please credit them too.

Source: samoEKO, Air quality, Prijedor-Automatska Stanica station, https://samoeko.com/en/luft/stanica/BA0048A, accessed 7 October 2026. Readings: official stations, via the European Environment Agency (EEA). The level is calculated by samoEKO.

Rules for reuse

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