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Air at the Vares station

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

Network: Federal Hydrometeorological Institute · Station code: BA0069A

This year, up to yesterday (October 6)

No exceedance on the measured days. 14 of 279 days were measured.

Daily average for 14 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)

Fair

Air now · Measured at 21:00

Latest values

Latest value: 21:00

Readings
PollutantValueLevel
PM1032 µg/m³Fair

How the air is changing

Over the last seven days the values were about the same as the week before.

  • PM10: average 16.2 µg/m³, week before 16.5 µg/m³
  • PM2.5: average 14.4 µg/m³, week before 15.2 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

Show

Particulate matter PM10

32

Nowµg/m³

Measured at 21:00

22.1

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

16.2

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 4 % of hours · provisional

Days in 2023: PM10, daily average above 50 µg/m³

2 days above the limit. 55 days without any reading from the station.

1102031JanFebMarAprMayJunJun 23: 51 µg/m³, above the limitJulAugSepSep 23: no data from the stationSep 24: no data from the stationOctOct 16: no data from the stationOct 17: no data from the stationOct 18: no data from the stationOct 20: no data from the stationOct 21: no data from the stationOct 22: no data from the stationOct 23: no data from the stationOct 24: no data from the stationOct 25: no data from the stationOct 26: no data from the stationOct 27: no data from the stationOct 28: no data from the stationOct 29: no data from the stationOct 30: no data from the stationOct 31: no data from the stationNovNov 1: no data from the stationNov 2: no data from the stationNov 3: no data from the stationNov 4: no data from the stationNov 5: no data from the stationNov 6: no data from the stationNov 7: no data from the stationNov 8: no data from the stationNov 9: no data from the stationNov 10: no data from the stationNov 11: no data from the stationNov 12: no data from the stationNov 13: no data from the stationNov 14: no data from the stationNov 15: no data from the stationNov 16: no data from the stationNov 17: no data from the stationNov 18: no data from the stationNov 19: no data from the stationNov 20: no data from the stationNov 21: no data from the stationNov 22: no data from the stationNov 23: no data from the stationNov 24: no data from the stationNov 25: no data from the stationNov 26: no data from the stationNov 27: no data from the stationNov 28: no data from the stationNov 29: no data from the stationNov 30: no data from the stationDecDec 1: no data from the stationDec 2: no data from the stationDec 3: no data from the stationDec 4: no data from the stationDec 5: no data from the stationDec 6: no data from the stationDec 7: no data from the stationDec 10: no data from the stationDec 28: 56 µg/m³, above the limit
  • above the limit
  • below the limit
  • too few readings for the day
  • no data from the station
Days above the limit with values (2)
  1. Jun 23 51
  2. Dec 28 56

Values in µg/m³, limit 50 µg/m³.

Months of 2023

MonthDays above 50Highest dayNo readings
January
February
March
April0350
May0330
June1 above the number allowed510
July0400
August0420
September0372
October02515
November30
December1 above the number allowed568

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 51 µg/m³, latest 32 µg/m³ (21:00)0204060ThuFriSatSunMonTueWedlatest 32 (21:00)
measuredmodel estimate, not counted
Last 7 days, every hour: PM10 in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
22:0024model estimate, not counted
21:0032
20:0044.2
19:0036
18:0031.7
17:0022
16:0018.9
15:0018.3
14:0017.3
13:0019.4
12:0020.7
11:0016.6
10:0051.3
09:0032.4
08:0021.8
07:0020.8
06:0017.4
05:0012
04:0010.8
03:0010.9
02:0010.3
01:0010.3
Tuesday, 10/6
00:0011.7
23:0016.3
22:0018.5
21:0022.7
20:0026.9
19:0032.9
18:0030.6
17:0032.5
16:0021
15:0020.3
14:0018.8
13:0022.3
12:0023.2
11:0023.7
10:0020
09:0015.3
08:0013
07:0011.8
06:0024.1
05:006.7
04:006.8
03:007.6
02:009.8
01:0010.2
Monday, 10/5
00:0012.3
23:0014.4
22:0014.8
21:0019.1
20:0024.3
19:0033.6
18:0022.2
17:0018.5
16:0017.1
15:0016.6
14:0015.9
13:0019
12:0023.1
11:0025.3
10:0015.4
09:0014.7
08:0011.4
07:008.8
06:009.9
05:0013.3
04:006
03:007.8
02:007.2
01:007.8
Sunday, 10/4
00:0010.3
23:0011.3
22:0013.9
21:0016.8
20:0016.9
19:0032.2
18:0022.9
17:0018
16:0016.2
15:0014.3
14:0013.4
13:0017.7
12:0019.2
11:0012.2
10:0016.6
09:0016.3
08:0011.7
07:007.6
06:006.3
05:005.8
04:006.1
03:006
02:006.9
01:008.9
Saturday, 10/3
00:009.2
23:0016.5
22:0015.8
21:0017.9
20:0023.9
19:0034.7
18:0021.2
17:0020.2
16:0015.8
15:0015.7
14:0014.6
13:0016.6
12:0016.6
11:0017.4
10:0021.4
09:0023.7
08:0013.9
07:009.1
06:007.7
05:008.3
04:008.9
03:009.5
02:0010.6
01:0010.7
Friday, 10/2
00:0013.2
23:0017.5
22:0019.6
21:0022.7
20:0024.2
19:0030.9
18:0018.8
17:0019.2
16:0017.7
15:0017.8
14:0017.1
13:0016.7
12:0020.7
11:0025.1
10:0019
09:0014.4
08:0012
07:0010.5
06:0012.4
05:0013.5
04:007.4
03:007.4
02:008.3
01:009
Thursday, 10/1
00:0010.4
23:0010.6
22:0014
21:0018.5
20:0020
19:0030.2
18:0021
17:0018.6
16:0018.6
15:0015.9
14:0015
13:0017
12:0017.8
11:0020.5
10:0018.2
09:0016.3
08:0015.4
07:0013.2
06:0013.7
05:0015.7
04:0010
03:009.9
02:0010.1
01:0011.2
Last 30 days, daily average: PM10 in µg/m³highest 20 µg/m³, latest 19 µg/m³02040609/99/169/239/30highest 20latest 19
too few readingslegal daily limit, 50 µg/m³no data from the station
Last 30 days, daily average: PM10 in µg/m³
Values as a table
Dayµg/m³Note
Tue, 10/618.6provisional
Mon, 10/515.8provisional
Sun, 10/413.6provisional
Sat, 10/315.8provisional
Fri, 10/216.5provisional
Thu, 10/115.9provisional
Wed, 9/3017.1provisional
Tue, 9/2918.1provisional
Mon, 9/2820provisional
Sun, 9/2718.9provisional
Sat, 9/2620.3provisional
Fri, 9/2512provisional
Thu, 9/2415.3provisional
Wed, 9/2310.9provisional
Tue, 9/22too few readings
Mon, 9/21no data from the station
Sun, 9/20no data from the station
Sat, 9/19no data from the station
Fri, 9/18no data from the station
Thu, 9/17no data from the station
Wed, 9/16no data from the station
Tue, 9/15no data from the station
Mon, 9/14no data from the station
Sun, 9/13no data from the station
Sat, 9/12no data from the station
Fri, 9/11no data from the station
Thu, 9/10no data from the station
Wed, 9/9no data from the station
Tue, 9/8no data from the station
Mon, 9/7no data from the station
Last 12 months, monthly average: PM10 in µg/m³highest 16 µg/m³, latest 16 µg/m³0204060DecFebAprJunAugOcthighest 16
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 far16measured in 100 % of hours · provisional
September 2026too few readingsmeasured in 29 % of hours · provisional · 21 days without data from the station
August 2026too few readings31 days without data from the station
July 2026too few readings31 days without data from the station
June 2026too few readings30 days without data from the station
May 2026too few readings31 days without data from the station
April 2026too few readings30 days without data from the station
March 2026too few readings31 days without data from the station
February 2026too few readings28 days without data from the station
January 2026too few readings31 days without data from the station
December 2025too few readings31 days without data from the station
November 2025too few readings30 days without data from the station

PM10 by year

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

Measure2026*20242023
Days above 50 µg/m³ (allowed 35)0²≥ 5²≥ 2²
Days above 150 µg/m³ (warning threshold FBiH)000
Days above 300 µg/m³ (alert threshold FBiH)000
Annual average, µg/m³ (legal limit 40)too fewtoo fewtoo few
Highest daily average, µg/m³20September 26130March 2756December 28
Highest hourly value, µg/m³35October 3475March 27205September 21
Hours measured5 %29 %55 %
Days without any reading from the station26424855

* 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.

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 2023 there were 5 such days.
  • WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2023 there were 5 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 2023

DayAverageTimes the limit
Dec 28, 2023561.1 ×
Jun 23, 2023511.0 ×

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

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: 264

1 outage, 6,344 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

Grey: for 2025 the archive has no hour from this station, because the EEA's verified annual delivery does not include it. We do not count this as an outage.

FromToDuration
Jan 1, 2026 00:00Sep 22, 2026 09:00264 days

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

Who is responsible

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

Federal Hydrometeorological Institute (FHMZ)
Runs the federal network, collects the data of all networks and publishes it. It issues a report every month and, every year by 31 July, the annual air quality report (Art. 14, 19 and 63).
Canton
Sets up the cantonal network and is responsible for the measures. When limit values are exceeded, it adopts an air quality plan. When warning or alert thresholds are at risk of being exceeded, it adopts a short-term intervention plan. When the information threshold or a concentration dangerous to health is exceeded, it informs the public (Art. 15, 22, 25, 27 and 61). In Zenica-Doboj Canton the Ministry of Physical Planning, Transport, Communications and Environmental Protection is responsible for environmental protection. The 2024 intervention plan was adopted by the Government of the canton.
Municipality
May run its own stations with the consent of the canton and must publish their results (Art. 16 and 17). Under the Zenica-Doboj Canton intervention plan (Official Gazette ZDK 3/24, Art. 3), the mayor of the municipality or city declares readiness based on the report of the authorised expert institution, and warning and alert based on the decision of the operational headquarters.
Inspectorates
The inspectorates of the Federation, the canton and the municipality supervise the law and the measures, each within its remit (Art. 71).

What the law requires when a limit is exceeded

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

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

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

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

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

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

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

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

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