Air at the Jajce - Harmani station

Jajce, Central Bosnia Canton · Federation of Bosnia and Herzegovina

Network: Federal Hydrometeorological Institute · Station code: BA0040A

This year, up to yesterday (October 6)

at least

22 days

with an 8-hour average of ozone (O₃) above the target value of 120 µg/m³.

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

at least

12 days

with a daily average of particulate matter PM10 above the legal limit of 50 µg/m³.

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

Worst day: August 11, 2026, O₃ 149 µg/m³ as a daily average, 1.2 times the limit.

Daily average for 53 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

Fair

Air now · Measured at 18:00

Latest values

Latest value: 18:00

Readings
Pollutant	Value	Level
PM10	19.3 µg/m³	Fair
O₃	81.7 µg/m³	Fair
SO₂	5.9 µg/m³	Good

How the air is changing

Over the last seven days there was more PM10 and SO₂ in the air than the week before.

PM10: average 18.7 µg/m³, week before 14.4 µg/m³
NO₂: too few readings to compare
O₃: average 52 µg/m³, week before 49.5 µg/m³
SO₂: average 8.6 µg/m³, week before 5.2 µg/m³

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

PM10: too few readings to compare
NO₂: too few readings to compare
O₃: too few readings to compare
SO₂: too few readings to compare

Show

Particulate matter PM10

19.3

Nowµg/m³

Measured at 18:00

28.2

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

18.7

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 89 % of hours · 1 month with too few readings · provisional

Days in 2024: PM10, daily average above 50 µg/m³

15 days above the limit. 11 days without any reading from the station.

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 (15)

Jan 30 57
Mar 27 60
Mar 31 61
Apr 1 115
Jun 21 55
Jun 22 64
Nov 18 60
Nov 27 56
Dec 17 66
Dec 18 84
Dec 19 54
Dec 28 54
Dec 29 59
Dec 30 83
Dec 31 72

Values in µg/m³, limit 50 µg/m³.

Months of 2024

Month	Days above 50	Average	Highest day	No readings
January	1 above the number allowed	40	57	0
February	0	too few		0
March	2 above the number allowed	24	61	0
April	1 above the number allowed	17	115	0
May	0	12	31	0
June	2 above the number allowed	15	64	0
July	0	13	21	0
August				0
September				0
October	0	too few	42	11
November	2 above the number allowed	29	60	0
December	7 above the number allowed	32	84	0

Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.

measuredmodel estimate, not counted

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

Values as a table

Hour to	µg/m³	Note
Wednesday, 10/7
19:00	21	model estimate, not counted
18:00	19.3
17:00	19.3
16:00	16.3
15:00	15.4
14:00	18.8
13:00	20.2
12:00	24.1
11:00	35.4
10:00	39.9
09:00	33.1
08:00	31.2
07:00	27.7
06:00	27.2
05:00	27.6
04:00	26.6
03:00	27.2
02:00	31.4
01:00	30
Tuesday, 10/6
00:00	37.6
23:00	35.7
22:00	40.2
21:00	36
20:00	35.5
19:00	19.1
18:00	17.4
17:00	14.4
16:00	12.8
15:00	21.2
14:00	21.4
13:00	20.5
12:00	18.9
11:00	21.8
10:00	26
09:00	19.9
08:00	16.1
07:00	15.4
06:00	16.5
05:00	18.1
04:00	22.4
03:00	21.4
02:00	24.2
01:00	30
Monday, 10/5
00:00	36.1
23:00	41.5
22:00	45.3
21:00	40.9
20:00	25.4
19:00	21.3
18:00	22.6
17:00	16.9
16:00	12.4
15:00	14.4
14:00	13.7
13:00	15.2
12:00	14.6
11:00	17.9
10:00	20.8
09:00	16.3
08:00	13.3
07:00	11.9
06:00	11.9
05:00	14.7
04:00	13.1
03:00	14
02:00	15.5
01:00	16.1
Sunday, 10/4
00:00	24
23:00	27.9
22:00	33.7
21:00	30.6
20:00	18
19:00	13.5
18:00	11.3
17:00	10.1
16:00	9.2
15:00	10.2
14:00	13.4
13:00	13.5
12:00	13.9
11:00	15
10:00	18.9
09:00	13.9
08:00	12
07:00	13.4
06:00	15.3
05:00	14
04:00	13.7
03:00	15.8
02:00	19.2
01:00	22.5
Saturday, 10/3
00:00	30.5
23:00	35.6
22:00	32.6
21:00	32.5
20:00	40.4
19:00	15.8
18:00	12.3
17:00	10.9
16:00	12.2
15:00	14
14:00	14.4
13:00	16.5
12:00	16.9
11:00	16.8
10:00	19.9
09:00	16.3
08:00	14.1
07:00	13.8
06:00	17.5
05:00	14.3
04:00	13
03:00	15.2
02:00	19.9
01:00	20.7
Friday, 10/2
00:00	22.1
23:00	24.7
22:00	26.7
21:00	27.4
20:00	29.5
19:00	24.4
18:00	12.4
17:00	12.7
16:00	11.4
15:00	12.3
14:00	14.3
13:00	14.6
12:00	16.1
11:00	19
10:00	18.7
09:00	13.3
08:00	13.7
07:00	14.2
06:00	13.1
05:00	11.9
04:00	11.9
03:00	14.6
02:00	15.1
01:00	18.4
Thursday, 10/1
00:00	23.6
23:00	25.7
22:00	28
21:00	20
20:00	25.1
19:00	17.7
18:00	11.7
17:00	12.9
16:00	13
15:00	12.2
14:00	12.9
13:00	18.4
12:00	14.7
11:00	17.1
10:00	14.7
09:00	15.2
08:00	12.7
07:00	12.2
06:00	12.1
05:00	14.1
04:00	16.8
03:00	15.7
02:00	18.9
01:00	20.7
Wednesday, 9/30
00:00	20.9
23:00	21.4
22:00	23.8

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

Day	µg/m³	Note
Tue, 10/6	23.4	provisional
Mon, 10/5	20.2	provisional
Sun, 10/4	16.8	provisional
Sat, 10/3	19.4	provisional
Fri, 10/2	17.2	provisional
Thu, 10/1	16.9	provisional
Wed, 9/30	16.7	provisional
Tue, 9/29	18.2	provisional
Mon, 9/28	17.7	provisional
Sun, 9/27	17.5	provisional
Sat, 9/26	14.9	provisional
Fri, 9/25	6.8	provisional
Thu, 9/24	12.5	provisional
Wed, 9/23	13.4	provisional
Tue, 9/22		too few readings
Mon, 9/21		no data from the station
Sun, 9/20		no data from the station
Sat, 9/19		no data from the station
Fri, 9/18		no data from the station
Thu, 9/17		no data from the station
Wed, 9/16		no data from the station
Tue, 9/15		no data from the station
Mon, 9/14		no data from the station
Sun, 9/13		no data from the station
Sat, 9/12		no data from the station
Fri, 9/11		no data from the station
Thu, 9/10		no data from the station
Wed, 9/9		no data from the station
Tue, 9/8		no data from the station
Mon, 9/7		no data from the station

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	19	9.2	measured in 100 % of hours · provisional · year before: same days
September 2026	too few readings	12.1	measured in 30 % of hours · provisional · 20 days without data from the station
August 2026	22.8	13.9	measured in 97 % of hours · provisional
July 2026	8.1	too few readings	measured in 92 % of hours · provisional
June 2026	3.2	10.5	measured in 92 % of hours · provisional · 1 day without data from the station
May 2026	5.3	12.8	measured in 94 % of hours · provisional
April 2026	15.6	18.3	measured in 79 % of hours · provisional · 4 days without data from the station
March 2026	29.3	24.7	measured in 99 % of hours · provisional
February 2026	24.1	29.8	measured in 100 % of hours · provisional
January 2026	40.7	42.9	measured in 87 % of hours · provisional · 2 days without data from the station
December 2025	38.7	31.7	measured in 98 % of hours · verified
November 2025	20.5	29.3	measured in 100 % of hours · verified

PM10 by year

Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)

Measure	2026*	2025	2024	2023
Days above 50 µg/m³ (allowed 35)	≥ 12²	21	≥ 15²	21
Days above 150 µg/m³ (warning threshold FBiH)	0	0	0	0
Days above 300 µg/m³ (alert threshold FBiH)	0	0	0	0
Annual average, µg/m³ (legal limit 40)	too few	21.2	too few	21.2
Highest daily average, µg/m³	99January 23	98January 1	115April 1	98January 1
Highest hourly value, µg/m³	195August 19	172January 1	175December 18	172January 1
Hours measured	86 %	95 %	69 %	95 %
Days without any reading from the station	27	0	11	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.

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 2024 there were 17 such days.
WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2024 there were 17 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 2024

Day	Average	Times the limit
Apr 1, 2024	115	2.3 ×
Dec 18, 2024	84	1.7 ×
Dec 30, 2024	83	1.7 ×
Dec 31, 2024	72	1.4 ×
Dec 17, 2024	66	1.3 ×

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

Nitrogen dioxide NO₂

no measurement

Now

too few readings

Last 24 hours

measured in 0 % of hours

too few readings

Last 7 days

measured in 0 % of hours

too few readings

Last 30 days

measured in 0 % of hours

too few readings

Last 12 months

measured in 75 % of hours · provisional

Days in 2024: NO₂, daily average above 85 µg/m³

No measured day above the limit. 11 days without any reading from the station.

above the limit
below the limit
too few readings for the day
no data from the station

Months of 2024

Month	Average	Highest day	No readings
January	16	33	0
February	15	30	0
March	9	16	0
April	7	13	0
May	too few	7	0
June	too few	4	0
July	5	8	0
August	7	10	0
September	6	10	0
October	too few	15	11
November	12	24	0
December	14	37	0

Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.

There are no readings for this period.

Last 7 days, every hour: NO₂ in µg/m³

no data from the station

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

Values as a table

Day	µg/m³	Note
Tue, 10/6		no measurement
Mon, 10/5		no measurement
Sun, 10/4		no measurement
Sat, 10/3		no measurement
Fri, 10/2		no measurement
Thu, 10/1		no measurement
Wed, 9/30		no measurement
Tue, 9/29		no measurement
Mon, 9/28		no measurement
Sun, 9/27		no measurement
Sat, 9/26		no measurement
Fri, 9/25		no measurement
Thu, 9/24		no measurement
Wed, 9/23		no measurement
Tue, 9/22		no measurement
Mon, 9/21		no data from the station
Sun, 9/20		no data from the station
Sat, 9/19		no data from the station
Fri, 9/18		no data from the station
Thu, 9/17		no data from the station
Wed, 9/16		no data from the station
Tue, 9/15		no data from the station
Mon, 9/14		no data from the station
Sun, 9/13		no data from the station
Sat, 9/12		no data from the station
Fri, 9/11		no data from the station
Thu, 9/10		no data from the station
Wed, 9/9		no data from the station
Tue, 9/8		no data from the station
Mon, 9/7		no data from the station

Last 12 monthsa year earlierlegal annual limit, 40 µg/m³month 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	too few readings	5.4	year before: same days
September 2026	too few readings	5.5	measured in 1 % of hours · provisional · 20 days without data from the station
August 2026	13	6.7	measured in 91 % of hours · provisional
July 2026	too few readings	5.2	measured in 31 % of hours · provisional
June 2026	too few readings	5.3	measured in 60 % of hours · provisional · 1 day without data from the station
May 2026	5.8	5.1	measured in 81 % of hours · provisional
April 2026	8.1	7.2	measured in 76 % of hours · provisional · 4 days without data from the station
March 2026	14.3	11.5	measured in 99 % of hours · provisional
February 2026	14.1	14.9	measured in 98 % of hours · provisional
January 2026	17.7	13.8	measured in 86 % of hours · provisional · 2 days without data from the station
December 2025	16.2	13.8	measured in 100 % of hours · verified
November 2025	11.9	11.9	measured in 96 % of hours · verified

NO₂ by year

Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)

Measure	2026*	2025	2024	2023
Days above 85 µg/m³ (none allowed)	0²	0	0²	0²
Hours above 200 µg/m³ (allowed 18)	0²	0	0²	0²
Hours above 400 µg/m³, three hours in a row (alert threshold)	0	0	0	0
Annual average, µg/m³ (legal limit 40)	too few	9.6	9.3¹	too few
Highest daily average, µg/m³	38January 14	34December 16	37December 30	39January 4
Highest hourly value, µg/m³	90January 16	74March 8	61January 31	73January 7
Hours measured	68 %	93 %	82 %	66 %
Days without any reading from the station	27	0	11	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.

¹ Fewer than 90 % of the hours were measured, so we do not compare this average with the limit.

² Too few readings to compare with the number allowed: the figure covers only what was measured.

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

There is no allowed number for the warning and alert thresholds: every such hour or day is in red.

The column for 2023 is shown on wider screens.

Compared with the new EU rules and the WHO recommendation

EU from 2030: daily 50 µg/m³, 18 days allowed. In 2024 there were 0 such days.
WHO 2021: daily 25 µg/m³, at most three to four days a year. In 2024 there were 10 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.

Ozone O₃

81.7

Nowµg/m³

Measured at 18:00

49.1

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

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 15 % of hours · provisional

Days in 2024: O₃, 8-hour average above 120 µg/m³

261 days above the limit. 11 days without any reading from the station.

above the limit
below the limit
too few readings for the day
no data from the station

Days above the limit with values (261)

Jan 1 161
Jan 3 169
Jan 4 180
Jan 5 158
Jan 6 214
Jan 12 127
Jan 13 134
Jan 16 148
Jan 17 167
Jan 18 182
Jan 19 157
Jan 20 176
Jan 21 148
Jan 22 140
Jan 27 154
Jan 31 143
Feb 1 131
Feb 2 145
Feb 3 137
Feb 4 122
Feb 5 129
Feb 6 165
Feb 7 168
Feb 8 187
Feb 9 204
Feb 10 210
Feb 11 201
Feb 12 140
Feb 14 165
Feb 15 154
Feb 16 153
Feb 17 199
Feb 18 186
Feb 19 172
Feb 20 167
Feb 21 163
Feb 22 218
Feb 24 240
Feb 25 150
Feb 26 165
Feb 27 154
Feb 28 194
Feb 29 124
Mar 1 202
Mar 2 179
Mar 3 211
Mar 4 214
Mar 5 214
Mar 6 175
Mar 7 164
Mar 9 195
Mar 10 222
Mar 11 230
Mar 12 184
Mar 13 161
Mar 14 170
Mar 15 205
Mar 16 178
Mar 17 191
Mar 18 179
Mar 19 224
Mar 20 205
Mar 21 230
Mar 22 232
Mar 23 249
Mar 24 249
Mar 25 207
Mar 26 204
Mar 27 207
Mar 28 226
Mar 29 228
Mar 30 231
Mar 31 248
Apr 1 231
Apr 2 244
Apr 3 240
Apr 4 244
Apr 5 244
Apr 6 240
Apr 7 250
Apr 8 238
Apr 9 259
Apr 10 238
Apr 11 206
Apr 12 227
Apr 13 237
Apr 14 242
Apr 15 290
Apr 16 288
Apr 17 198
Apr 18 230
Apr 19 229
Apr 20 233
Apr 21 223
Apr 22 199
Apr 23 184
Apr 24 166
Apr 25 220
Apr 26 246
Apr 27 229
Apr 28 223
Apr 29 269
Apr 30 262
May 1 226
May 2 236
May 3 220
May 4 208
May 5 249
May 6 228
May 7 221
May 8 228
May 9 232
May 10 235
May 11 277
May 12 287
May 13 248
May 14 218
May 15 182
May 16 201
May 17 263
May 18 260
May 19 243
May 20 181
May 21 223
May 22 189
May 23 240
May 24 232
May 25 214
May 26 168
May 27 195
May 28 170
May 29 170
May 30 251
May 31 207
Jun 1 266
Jun 2 217
Jun 3 216
Jun 4 227
Jun 5 245
Jun 6 249
Jun 7 252
Jun 8 232
Jun 9 220
Jun 10 259
Jun 11 223
Jun 12 148
Jun 13 122
Jun 14 206
Jun 15 227
Jun 16 220
Jun 17 253
Jun 18 219
Jun 19 198
Jun 20 249
Jun 21 197
Jun 22 229
Jun 23 220
Jun 24 209
Jun 25 167
Jun 26 182
Jun 27 181
Jun 28 218
Jun 29 263
Jun 30 237
Jul 1 252
Jul 2 213
Jul 3 188
Jul 4 187
Jul 5 211
Jul 6 209
Jul 7 219
Jul 8 235
Jul 9 285
Jul 10 295
Jul 11 295
Jul 12 267
Jul 13 257
Jul 14 256
Jul 15 255
Jul 16 254
Jul 17 286
Jul 18 255
Jul 19 313
Jul 20 228
Jul 21 236
Jul 22 247
Jul 23 248
Jul 24 227
Jul 25 238
Jul 26 238
Jul 27 239
Jul 28 264
Jul 29 247
Jul 30 254
Jul 31 256
Aug 1 252
Aug 2 269
Aug 3 271
Aug 4 277
Aug 5 237
Aug 6 217
Aug 7 221
Aug 8 245
Aug 9 256
Aug 10 227
Aug 11 257
Aug 12 269
Aug 13 275
Aug 14 271
Aug 15 277
Aug 16 271
Aug 17 251
Aug 18 204
Aug 19 193
Aug 20 187
Aug 21 239
Aug 22 242
Aug 23 267
Aug 24 278
Aug 25 287
Aug 26 251
Aug 27 245
Aug 28 267
Aug 29 295
Aug 30 278
Aug 31 272
Sep 1 287
Sep 2 294
Sep 3 234
Sep 4 286
Sep 5 241
Sep 6 207
Sep 7 233
Sep 8 202
Sep 9 188
Sep 10 217
Sep 11 213
Sep 12 250
Sep 13 206
Sep 14 133
Sep 15 165
Sep 16 149
Sep 17 124
Sep 18 142
Sep 20 148
Sep 21 194
Sep 22 201
Sep 23 180
Sep 24 175
Sep 25 144
Sep 26 231
Sep 27 242
Sep 28 180
Sep 29 165
Sep 30 173
Oct 1 155
Oct 2 185
Oct 3 181
Oct 6 120
Oct 7 162
Oct 8 185

Values in µg/m³, limit 120 µg/m³.

Months of 2024

Month	Days above 120	Average	Highest 8 h	No readings
January	16 above the number allowed	92	214	0
February	27 above the number allowed	101	240	0
March	30 above the number allowed	136	249	0
April	30 above the number allowed	153	290	0
May	31 above the number allowed	150	287	0
June	30 above the number allowed	146	266	0
July	31 above the number allowed	166	313	0
August	31 above the number allowed	165	295	0
September	29 above the number allowed	129	294	0
October	6 above the number allowed	too few	185	11
November	0	35	94	0
December	0	34	88	0

Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.

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
19:00	74	model estimate, not counted
18:00	81.7
17:00	98.7
16:00	105.3
15:00	108.1
14:00	104.5
13:00	94.3
12:00	80.4
11:00	56.1
10:00	24
09:00	21.1
08:00	15.3
07:00	19.3
06:00	21.3
05:00	23.1
04:00	23
03:00	23.1
02:00	13.9
01:00	28.8
Tuesday, 10/6
00:00	28.6
23:00	32.2
22:00	39.4
21:00	37.7
20:00	41.3
19:00	76.3
18:00	81.6
17:00	97.8
16:00	105.4
15:00	100.6
14:00	97.5
13:00	94
12:00	87.6
11:00	65.7
10:00	33.6
09:00	25.6
08:00	25.9
07:00	28.2
06:00	33
05:00	31.5
04:00	23.6
03:00	24
02:00	13.5
01:00	26.8
Monday, 10/5
00:00	26.4
23:00	27.8
22:00	31.8
21:00	36.2
20:00	61.1
19:00	94.1
18:00	113.7
17:00	112
16:00	109.8
15:00	106.2
14:00	105.5
13:00	91.4
12:00	80.3
11:00	65.9
10:00	33.6
09:00	25.5
08:00	25.1
07:00	27.6
06:00	31.9
05:00	24.3
04:00	25.2
03:00	24.8
02:00	13.6
01:00	25.7
Sunday, 10/4
00:00	23.8
23:00	27.9
22:00	34.9
21:00	42.8
20:00	67.4
19:00	75.3
18:00	92.4
17:00	102.7
16:00	102.4
15:00	98.8
14:00	98.9
13:00	91.7
12:00	80.5
11:00	68.3
10:00	34.9
09:00	29.2
08:00	27.6
07:00	29.1
06:00	27.1
05:00	25.9
04:00	23.2
03:00	22
02:00	13.3
01:00	23.8
Saturday, 10/3
00:00	22.8
23:00	25.1
22:00	27.9
21:00	35.6
20:00	43.5
19:00	77.3
18:00	96.8
17:00	107.5
16:00	105.4
15:00	103.6
14:00	102.1
13:00	96.4
12:00	85
11:00	56
10:00	36.8
09:00	28.4
08:00	25.9
07:00	29.5
06:00	28.2
05:00	21.8
04:00	23
03:00	21.5
02:00	13.6
01:00	25.9
Friday, 10/2
00:00	25.4
23:00	33.5
22:00	36.4
21:00	37.9
20:00	57.3
19:00	77.8
18:00	111.9
17:00	106.5
16:00	102.7
15:00	97.8
14:00	93
13:00	85.2
12:00	76
11:00	57.7
10:00	32.1
09:00	28.8
08:00	22.8
07:00	24.5
06:00	27.4
05:00	24
04:00	24.6
03:00	24.6
02:00	14.3
01:00	27.6
Thursday, 10/1
00:00	28.1
23:00	28.7
22:00	27.7
21:00	42.7
20:00	45.6
19:00	78.8
18:00	105.6
17:00	105.4
16:00	97.3
15:00	98.6
14:00	95.4
13:00	89.8
12:00	75.4
11:00	48.8
10:00	35.5
09:00	25.8
08:00	21.8
07:00	25.9
06:00	29.2
05:00	28.2
04:00	24.9
03:00	21.6
02:00	12.9
01:00	24.1
Wednesday, 9/30
00:00	27.3
23:00	29.9
22:00	41.7

too few readingstarget value, 120 µg/m³no data from the station

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	92.6	provisional
Mon, 10/5	101.6	provisional
Sun, 10/4	92.8	provisional
Sat, 10/3	96.7	provisional
Fri, 10/2	93.9	provisional
Thu, 10/1	93.3	provisional
Wed, 9/30	87.7	provisional
Tue, 9/29	95.3	provisional
Mon, 9/28	93.9	provisional
Sun, 9/27	79.6	provisional
Sat, 9/26	72.3	provisional
Fri, 9/25	76.3	provisional
Thu, 9/24	74.3	provisional
Wed, 9/23	65.2	provisional
Tue, 9/22		too few readings
Mon, 9/21		no data from the station
Sun, 9/20		no data from the station
Sat, 9/19		no data from the station
Fri, 9/18		no data from the station
Thu, 9/17		no data from the station
Wed, 9/16		no data from the station
Tue, 9/15		no data from the station
Mon, 9/14		no data from the station
Sun, 9/13		no data from the station
Sat, 9/12		no data from the station
Fri, 9/11		no data from the station
Thu, 9/10		no data from the station
Wed, 9/9		no data from the station
Tue, 9/8		no data from the station
Mon, 9/7		no data from the station

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	52.4		measured in 100 % of hours · provisional
September 2026	too few readings		measured in 30 % of hours · provisional · 20 days without data from the station
August 2026	78.2		measured in 97 % of hours · provisional
July 2026	too few readings		measured in 34 % of hours · provisional
June 2026	too few readings		1 day without data from the station
May 2026	too few readings
April 2026	too few readings		4 days without data from the station
March 2026	too few readings
February 2026	too few readings
January 2026	too few readings	too few readings	2 days without data from the station
December 2025	too few readings	34
November 2025	too few readings	35.2

O₃ by year

Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)

Measure	2026*	2025	2024	2023
Days with 8-hour average above 120 µg/m³ (target value 25)	≥ 22²	0²	261	59
Annual average, µg/m³	too few	too few	115.4	61.7
Highest 8-hour average, µg/m³	149August 11	86January 3	313July 19	227December 2
Hours measured	20 %	2 %	96 %	97 %
Days without any reading from the station	27	0	11	0

* 2026 up to October 6; the average since the start of the year is not yet an annual average.

The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.

≥ means at least: more than a tenth of the days or hours are missing, so the real number may be higher.

² Too few readings to compare with the number allowed: the figure covers only what was measured.

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

The column for 2023 is shown on wider screens.

The worst days of 2024

Day	Highest 8 h	Times the limit
Jul 19, 2024	313	2.6 ×
Jul 10, 2024	295	2.5 ×
Jul 11, 2024	295	2.5 ×
Aug 29, 2024	295	2.5 ×
Sep 2, 2024	294	2.5 ×

Daily average in µg/m³, daily limit 120 µg/m³. Days with the same unverified value over many hours are not on this list.

Sulphur dioxide SO₂

5.9

Nowµg/m³

Measured at 18:00

5.8

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

8.6

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 85 % of hours · 1 month with too few readings · provisional

Days in 2024: SO₂, daily average above 125 µg/m³

No measured day above the limit. 11 days without any reading from the station.

above the limit
below the limit
too few readings for the day
no SO₂ data in the EEA database
no data from the station

Months of 2024

Month	Days above 125	Hours above 350	Average	Highest day	No readings
January	0	0	18	40	0
February	0	0	20	41	0
March	0	0	17	22	0
April	0	0	16	24	0
May	0	0	too few	17	0
June					0
July					0
August					0
September	0	0	too few	19	0
October	0	0	too few	18	11
November	0	0	8	15	0
December	0	0	9	15	0

Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.

measured

Last 7 days, every hour: SO₂ in µg/m³

Values as a table

Hour to	µg/m³	Note
Wednesday, 10/7
18:00	5.9
17:00	6.1
16:00	6.3
15:00	6.5
14:00	6.8
13:00	6.6
12:00	6.3
11:00	6.2
10:00	5.7
09:00	5.4
08:00	5.4
07:00	5.2
06:00	5.2
05:00	5.1
04:00	5.1
03:00	5.4
02:00	5.3
01:00	5.3
Tuesday, 10/6
00:00	5.4
23:00	5.6
22:00	6.3
21:00	7.1
20:00	8.4
19:00	9
18:00	9.7
17:00	10.8
16:00	10.4
15:00	14.2
14:00	18.8
13:00	20.7
12:00	17.1
11:00	9.4
10:00	5.7
09:00	5.2
08:00	5
07:00	4.8
06:00	4.9
05:00	4.9
04:00	4.9
03:00	4.9
02:00	4.9
01:00	5.1
Monday, 10/5
00:00	5.2
23:00	5.4
22:00	6.2
21:00	7.8
20:00	10.8
19:00	16
18:00	20.6
17:00	20.8
16:00	18
15:00	19.2
14:00	22
13:00	15
12:00	10.6
11:00	8
10:00	5.7
09:00	5.3
08:00	5.3
07:00	5.2
06:00	5.2
05:00	5.2
04:00	5.1
03:00	5.2
02:00	5.3
01:00	5.3
Sunday, 10/4
00:00	5.5
23:00	6.3
22:00	6.1
21:00	7.2
20:00	9.5
19:00	10.4
18:00	14
17:00	14.3
16:00	10.7
15:00	11.5
14:00	14.1
13:00	13
12:00	10.4
11:00	8.4
10:00	6.1
09:00	5.4
08:00	5.1
07:00	5
06:00	4.8
05:00	4.8
04:00	4.8
03:00	4.9
02:00	5
01:00	4.8
Saturday, 10/3
00:00	4.7
23:00	5
22:00	5.5
21:00	6.6
20:00	7.5
19:00	8
18:00	9.3
17:00	9.5
16:00	10.8
15:00	16.4
14:00	19.1
13:00	30.3
12:00	21.6
11:00	6.5
10:00	4.7
09:00	4.5
08:00	4.5
07:00	4.5
06:00	4.6
05:00	4.7
04:00	4.8
03:00	5.2
02:00	5.3
01:00	5.4
Friday, 10/2
00:00	5.5
23:00	5.7
22:00	6.8
21:00	9
20:00	11.5
19:00	19
18:00	23
17:00	16.6
16:00	22.4
15:00	19.9
14:00	14.4
13:00	12.1
12:00	9.9
11:00	6.9
10:00	4.9
09:00	4.7
08:00	4.7
07:00	4.7
06:00	4.7
05:00	4.6
04:00	4.6
03:00	4.8
02:00	4.9
01:00	5.1
Thursday, 10/1
00:00	5
23:00	5.2
22:00	6
21:00	8
20:00	10.6
19:00	15.2
18:00	21.4
17:00	22.9
16:00	12.4
15:00	12.5
14:00	12.1
13:00	13.5
12:00	10.1
11:00	6
10:00	5.1
09:00	4.9
08:00	4.8
07:00	4.6
06:00	4.7
05:00	4.5
04:00	4.5
03:00	4.7
02:00	4.6
01:00	4.7
Wednesday, 9/30
00:00	5
23:00	5.3
22:00	5.6

too few readingsno data from the station

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

Values as a table

Day	µg/m³	Note
Tue, 10/6	8.5	provisional
Mon, 10/5	9.9	provisional
Sun, 10/4	8	provisional
Sat, 10/3	8.7	provisional
Fri, 10/2	9.6	provisional
Thu, 10/1	8.7	provisional
Wed, 9/30	6.9	provisional
Tue, 9/29	6.2	provisional
Mon, 9/28	6.4	provisional
Sun, 9/27	5.4	provisional
Sat, 9/26	5.6	provisional
Fri, 9/25	4.4	provisional
Thu, 9/24	4.5	provisional
Wed, 9/23	4.2	provisional
Tue, 9/22		too few readings
Mon, 9/21		no data from the station
Sun, 9/20		no data from the station
Sat, 9/19		no data from the station
Fri, 9/18		no data from the station
Thu, 9/17		no data from the station
Wed, 9/16		no data from the station
Tue, 9/15		no data from the station
Mon, 9/14		no data from the station
Sun, 9/13		no data from the station
Sat, 9/12		no data from the station
Fri, 9/11		no data from the station
Thu, 9/10		no data from the station
Wed, 9/9		no data from the station
Tue, 9/8		no data from the station
Mon, 9/7		no data from the station

Last 12 monthsthis month so fara year earlierlegal annual limit, 50 µg/m³month 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	8.9	23.3	measured in 100 % of hours · provisional · year before: same days
September 2026	too few readings	21.7	measured in 30 % of hours · provisional · 20 days without data from the station
August 2026	4.5	20.2	measured in 97 % of hours · provisional
July 2026	too few readings	17.9	measured in 51 % of hours · provisional
June 2026	38.9	16.1	measured in 77 % of hours · provisional · 1 day without data from the station
May 2026	35.9	13.1	measured in 94 % of hours · provisional
April 2026	34.7	11.8	measured in 79 % of hours · provisional · 4 days without data from the station
March 2026	33.5	14.5	measured in 99 % of hours · provisional
February 2026	32.7	17.1	measured in 100 % of hours · provisional
January 2026	36	13.9	measured in 87 % of hours · provisional · 2 days without data from the station
December 2025	31.4	9.5	measured in 100 % of hours · verified
November 2025	27.6	8	measured in 100 % of hours · verified

SO₂ by year

Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)

Measure	2026*	2025	2024	2023
Days above 125 µg/m³ (allowed 3)	0²	0	0²	0²
Hours above 350 µg/m³ (allowed 24)	0²	0	0²	0²
Hours above 500 µg/m³, three hours in a row (alert threshold)	0	0	0	0
Annual average, µg/m³ (legal limit 50)	too few	19.2	too few	too few
Highest daily average, µg/m³	47January 16	37December 24	41February 1	44January 25
Highest hourly value, µg/m³	92January 22	94March 3	164February 1	176January 27
Hours measured	80 %	100 %	64 %	64 %
Days without any reading from the station	27	0	11	0

* 2026 up to October 6; the average since the start of the year is not yet an annual average.

The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.

² Too few readings to compare with the number allowed: the figure covers only what was measured.

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

There is no allowed number for the warning and alert thresholds: every such hour or day is in red.

The column for 2023 is shown on wider screens.

Compared with the new EU rules and the WHO recommendation

EU from 2030: daily 50 µg/m³, 18 days allowed. In 2024 there were 0 such days.
WHO 2021: daily 40 µg/m³, at most three to four days a year. In 2024 there were 2 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.

Outages in the last 12 months

Every period of at least 24 hours in which no reading arrived from this station.

Days without a reading: 36

8 outages, 853 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

From	To	Duration
Sep 1, 2026 09:00	Sep 22, 2026 09:00	21 days
Jul 1, 2026 09:00	Jul 2, 2026 09:00	24 hours
Jun 9, 2026 05:00	Jun 11, 2026 11:00	2 days
May 23, 2026 01:00	May 24, 2026 08:00	31 hours
Apr 10, 2026 04:00	Apr 13, 2026 11:00	3 days
Apr 4, 2026 12:00	Apr 7, 2026 09:00	3 days
Jan 26, 2026 15:00	Jan 28, 2026 14:00	47 hours
Jan 9, 2026 14:00	Jan 11, 2026 11:00	45 hours

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

Who is responsible

Air quality in the Federation of BiH is monitored by three networks of stations: the federal, the cantonal and the municipal one (Air Protection Act, Official Gazette FBiH 72/24, Art. 12 to 16).

Federal Hydrometeorological Institute (FHMZ): Runs the federal network, collects the data of all networks and publishes it. It issues a report every month and, every year by 31 July, the annual air quality report (Art. 14, 19 and 63).
Canton: Sets up the cantonal network and is responsible for the measures. When limit values are exceeded, it adopts an air quality plan. When warning or alert thresholds are at risk of being exceeded, it adopts a short-term intervention plan. When the information threshold or a concentration dangerous to health is exceeded, it informs the public (Art. 15, 22, 25, 27 and 61).
Municipality: May run its own stations with the consent of the canton and must publish their results (Art. 16 and 17).
Inspectorates: The inspectorates of the Federation, the canton and the municipality supervise the law and the measures, each within its remit (Art. 71).

What the law requires when a limit is exceeded

A limit value is not a recommendation. The deadline for meeting the limit values for sulphur dioxide, nitrogen dioxide and particulate matter expired on 1 January 2021. Since then only the number of exceedances that the Pravilnik allows applies (Official Gazette FBiH 1/12, Annex X). The Air Protection Act adds that limit values, once met, must not be exceeded again (Art. 5(4)).

The law allows: for PM10 at most 35 days a year above 50 µg/m³, for sulphur dioxide at most 24 hours above 350 µg/m³ and at most 3 days above 125 µg/m³, for nitrogen dioxide at most 18 hours above 200 µg/m³ and no day with a daily average above 85 µg/m³ (Annex X).

When limits are exceeded, the canton adopts an air quality plan with measures that shorten the period of exceedance. The plan is published within eight days of adoption (Art. 8, 25, 26 and 63).

The alert thresholds are 500 µg/m³ for sulphur dioxide and 400 µg/m³ for nitrogen dioxide over three hours in a row, and 300 µg/m³ for PM10 and 280 µg/m³ for PM2.5 as a daily average (Pravilnik, Annex XIV, amended in Official Gazette FBiH 3/21). When such a situation threatens, the canton must have a short-term intervention plan. It can restrict traffic, construction work, the operation of plants and heating (Art. 27 and 28).

When the information threshold or a concentration dangerous to health is exceeded, the competent cantonal authorities inform the public through radio, television, newspapers and the internet: where, since when, how much was measured, what is expected and how to protect oneself (Art. 61 and 62).

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 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

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, Jajce - Harmani station, https://samoeko.com/en/luft/stanica/BA0040A, accessed 7 October 2026. Readings: official stations, via the European Environment Agency (EEA). The level is calculated by samoEKO.

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