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Air at the POLAČA (Ravni kotari) station

Polača, Croatia

Network: Državna mreža za trajno praćenje kvalitete zraka · Station code: HR0017A

This year, up to yesterday (October 6)

No measured day above the EU limit in 2026.

Daily average for 271 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)

Fair

Air now · Measured at 19:00

Latest values

Latest value: 19:00

Readings
PollutantValueLevel
PM1017.8 µg/m³Fair

How the air is changing

Over the last seven days there was more PM10 and PM2.5 in the air than the week before.

  • PM10: average 24.7 µg/m³, week before 14.1 µg/m³
  • PM2.5: average 7.9 µg/m³, week before 5.6 µg/m³

Last month there was less PM10 and PM2.5 in the air than the month before.

  • PM10: average 14.1 µg/m³, month before 19.3 µg/m³
  • PM2.5: average 5.2 µg/m³, month before 8.1 µg/m³

Show

Particulate matter PM10

17.8

Nowµg/m³

Measured at 19:00

23.4

Last 24 hoursµg/m³

measured in 83 % of hours · provisional

24.7

Last 7 daysµg/m³

measured in 99 % of hours · provisional

16.3

Last 30 daysµg/m³

measured in 99 % of hours · provisional

14.2

Last 12 monthsµg/m³

measured in 99 % of hours · provisional

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

1 day above the limit.

1102031JanFebMarAprMayJunJun 21: 95 µg/m³, above the limitJulAugSepOctNovDec
  • above the limit
  • below the limit
  • too few readings for the day
Days above the limit with values (1)
  1. Jun 21 95

Values in µg/m³, limit 50 µg/m³.

Months of 2024

MonthDays above 50Highest dayNo readings
January0420
February0390
March0380
April0400
May0330
June1 above the number allowed950
July0320
August0280
September0270
October0350
November0260
December0290

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 224 µg/m³, latest 15 µg/m³ (18:00)0100200300ThuFriSatSunMonTueWedlatest 15 (18:00)
measuredmodel estimate, not counted
Last 7 days, every hour: PM10 in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
21:0023model estimate, not counted
20:0022model estimate, not counted
19:0022model estimate, not counted
18:0015.2
17:0012.7
16:0015.4
15:0015.3
14:0016.7
13:0017
12:0017.4
11:0022.7
10:0060.5
09:0060.5
08:0034.3
07:0028.8
06:0019.4
05:0018.7
04:0018
03:0017.2
02:0017.1
01:0018.7
Tuesday, 10/6
00:0018.2
23:0024.3
22:00219.4
21:00224.3
20:0025.9
19:0023.7
18:0020
17:0017.8
16:0021.7
15:0024
14:0027.9
13:0021.3
12:0028.8
11:0018.3
10:0030.5
09:00111.5
08:0062.1
07:0037.6
06:0016.9
05:0017
04:0018.9
03:0019.5
02:0017.9
01:0017.5
Monday, 10/5
00:0017.9
23:0022.7
22:0034.8
21:0023.5
20:0022.3
19:0021.7
18:0016.1
17:0018
16:0017.3
15:0017.2
14:0016.7
13:0016.5
12:0022.6
10:0023.3
09:0026.5
08:0021.6
07:0018.1
06:0017.2
05:0016
04:0016.6
03:0017.2
02:0019.1
01:0018
Sunday, 10/4
00:0019.5
23:0028.1
22:0024.4
21:0019.9
20:0019.4
19:0021.2
18:0014.3
17:0013.5
16:0014.1
15:0014.6
14:0014.7
13:0016.7
12:0016.5
11:0020.3
10:0020
09:0016.5
08:0016.3
07:0017.7
06:0017.2
05:0018
04:0017.4
03:0016.7
02:0016.5
01:0015.4
Saturday, 10/3
00:0015.4
23:0015.4
22:0015.4
21:0016.4
20:0017.4
19:0019.6
18:0015
17:0014.7
16:0016.8
15:0011
14:0010.2
13:0010.5
12:0013.4
11:0012.8
10:0014.6
09:0019
08:0020.4
07:0017.9
06:0015.6
05:0016.1
04:0015.7
03:0015.8
02:0017.1
01:0016.4
Friday, 10/2
00:0016.8
23:0016.5
22:0016.3
21:0017.5
20:0020.5
19:0021.1
18:0018.8
17:0018
16:0018.8
15:0011.5
14:0013.6
13:0015.7
12:0015.8
11:0016.3
10:0021
09:0056.5
08:0031.4
07:0020.3
06:0016.7
05:0018.2
04:0017.5
03:0017.6
02:0017.2
01:0018.2
Thursday, 10/1
00:0018.8
23:0019.7
22:0020.9
21:0022.2
20:0056.2
19:0023.5
18:0018.2
17:0016.6
16:0016.6
15:0016.7
14:0019.3
13:0026.4
12:0043.1
11:0025.3
10:0088.2
09:0090.4
08:00119.1
07:0028.8
06:0020.7
05:0018.8
04:0017.6
03:0016.7
02:0015.5
01:0015.4
Wednesday, 9/30
00:0015.9
Last 30 days, daily average: PM10 in µg/m³highest 44 µg/m³, latest 44 µg/m³02040609/99/169/239/30highest 44
EU daily limit, 50 µg/m³
Last 30 days, daily average: PM10 in µg/m³
Values as a table
Dayµg/m³Note
Tue, 10/644.4provisional
Mon, 10/520provisional
Sun, 10/417.9provisional
Sat, 10/315.5provisional
Fri, 10/219.7provisional
Thu, 10/132.3provisional
Wed, 9/3022.6provisional
Tue, 9/2921.2provisional
Mon, 9/2821.7provisional
Sun, 9/2715.3provisional
Sat, 9/268.3provisional
Fri, 9/255.9provisional
Thu, 9/2418.4provisional
Wed, 9/237.5provisional
Tue, 9/228.3provisional
Mon, 9/2112.9provisional
Sun, 9/2014provisional
Sat, 9/1910.1provisional
Fri, 9/1810.1provisional
Thu, 9/1713.6provisional
Wed, 9/1613.9provisional
Tue, 9/157provisional
Mon, 9/1410.5provisional
Sun, 9/139.4provisional
Sat, 9/127.2provisional
Fri, 9/1112.7provisional
Thu, 9/1019.4provisional
Wed, 9/927.5provisional
Tue, 9/818.9provisional
Mon, 9/721.9provisional
Last 12 months, monthly average: PM10 in µg/m³highest 25 µg/m³, latest 25 µg/m³0204060DecFebAprJunAugOcthighest 25
Last 12 monthsthis month so fara year earlierEU annual limit, 40 µg/m³
Last 12 months, monthly average: PM10 in µg/m³
Values as a table
Monthµg/m³a year earlierNote
October 2026 so far2510measured in 99 % of hours · provisional · year before: same days
September 202614.113.1measured in 98 % of hours · provisional
August 202619.337.5measured in 99 % of hours · provisional
July 202613.812.1measured in 100 % of hours · provisional
June 202613.417.6measured in 96 % of hours · provisional
May 20269.57.1measured in 98 % of hours · provisional
April 202615.111.5measured in 99 % of hours · provisional
March 202618.815.6measured in 93 % of hours · provisional
February 202611.314.5measured in 100 % of hours · provisional
January 202612.215.2measured in 100 % of hours · provisional
December 202514.510.4measured in 100 % of hours · verified
November 202512.514.7measured in 100 % of hours · verified

PM10 by year

Yardstick: EU limits (Directive 2008/50/EC)

Measure2026*20252024
Days above 50 µg/m³ (allowed 35)061
Annual average, µg/m³ (EU limit 40)14.4*15.114.3
Highest daily average, µg/m³46August 29129August 395June 21
Highest hourly value, µg/m³224October 6248April 23234May 13
Hours measured98 %95 %98 %
Days without any reading from the station0130

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

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

Unverified hourly values of particulate matter from 975 µg/m³ up, and single spikes from 500 µg/m³ up between low values, count as missing. In the verified data for BiH from 2023 to 2025 no hour was above 600 µg/m³.

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

The column for 2023 is shown on wider screens.

Compared with the new EU rules and the WHO recommendation

This is not the yardstick for the verdict above, only a comparison. From 2030 the EU tightens its limits (Directive (EU) 2024/2881), and since 2021 the World Health Organization has recommended even lower values.

  • EU from 2030: daily 45 µg/m³, 18 days allowed. In 2024 there were 2 such days.
  • WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2024 there were 2 such days.
  • EU from 2030: annual average 20 µg/m³. Average in 2024: 14 µg/m³.
  • WHO 2021: annual average 15 µg/m³. Average in 2024: 14 µg/m³.

Sources: Directive (EU) 2024/2881, Annex I; WHO global air quality guidelines 2021, table 0.1. Checked against the texts on 7 October 2026.

The worst days of 2024

DayAverageTimes the limit
Jun 21, 2024951.9 ×

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: 1

1 outage, 26 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

FromToDuration
Jun 4, 2026 09:00Jun 5, 2026 11:0026 hours

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

Where the data comes from

Measured by Državna mreža za trajno praćenje kvalitete zraka. 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 EU limits come from Directive 2008/50/EC. Here they serve as a yardstick for comparison. When more than a tenth of the days or hours are missing, the number of exceedances can only be higher, so we write “at least” in front of it.

How we measure

samoEKO is a brand of samoLabs, Juelich.