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Air at the AMS1 Kaštel Sućurac station

Kaštela, Croatia

Network: Mjerna mreža Cemex Hrvatska d.o.o. · Station code: HR0023A

This year, up to yesterday (October 6)

No measured day above the EU limit in 2026.

Daily average for 261 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)

This station has only a model estimate, no measurement.

Latest values

Latest value: 20:00

Readings
PollutantValueLevel
NO₂Model estimate, not a measurement6 µg/m³no level

How the air is changing

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

  • NO₂: average 26.5 µg/m³, week before 12.8 µg/m³
  • SO₂: average 6.7 µg/m³, week before 5.9 µg/m³

Last month there was less NO₂ in the air than the month before.

  • NO₂: average 14.9 µg/m³, month before 19.9 µg/m³
  • SO₂: average 6.1 µg/m³, month before 6.9 µg/m³

Show

Nitrogen dioxide NO₂

no measurement

Now

36

Last 24 hoursµg/m³

measured in 75 % of hours · provisional

26.5

Last 7 daysµg/m³

measured in 96 % of hours · provisional

16.9

Last 30 daysµg/m³

measured in 95 % of hours · provisional

16.6

Last 12 monthsµg/m³

measured in 91 % of hours · provisional

Days in 2026: NO₂, at least one hour above 200 µg/m³

No measured day above the limit. 6 days without any reading from the station.

1102031JanFebMarAprMayMay 8: no data from the stationMay 9: no data from the stationMay 10: no data from the stationMay 11: no data from the stationMay 12: no data from the stationMay 13: no data from the stationJunJulAugSepOctNovDec
  • above the limit
  • below the limit
  • too few readings for the day
  • no NO₂ data in the EEA database
  • no data from the station

Months of 2026

MonthDays with an hour above 200Hours above 200Highest dayNo readings
January00380
February00340
March00340
April00240
May00246
June00200
July00390
August00430
September00320
October up to yesterday00310

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: NO₂ in µg/m³highest 83 µg/m³, latest 3 µg/m³ (14:00)0100200300ThuFriSatSunMonTueWedhighest 83latest 3 (14:00)
measuredmodel estimate, not countedEU hourly limit, 200 µg/m³
Last 7 days, every hour: NO₂ in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
19:006model estimate, not counted
18:005model estimate, not counted
17:003model estimate, not counted
16:002model estimate, not counted
15:002model estimate, not counted
14:003
13:006.3
12:007.1
11:0025.4
10:0059.3
09:0083.4
08:0082.4
07:0062.7
06:0024.7
05:0020.8
04:0018.2
03:0018.1
02:0027.3
01:0041.3
Tuesday, 10/6
00:0040.1
23:0040.1
22:0040.5
21:0047.6
19:0014.3
18:003.7
17:004.5
16:009.8
15:005.4
14:0013.5
13:0015.4
12:0025.8
11:0048.8
10:0053.4
09:0077.3
08:0077.1
07:0043.9
06:0027.4
05:0019.6
04:0019.2
03:0012.3
02:0019.3
01:0029.3
Monday, 10/5
00:0036.7
23:0047.6
22:0047.8
21:0035.3
20:0030.2
18:0023
17:007.1
16:004.3
15:006.3
14:009.2
13:0014.4
12:0014.8
11:0028.1
10:0033.7
09:0066.4
08:0075.7
07:0057
06:0025.4
05:0024.7
04:0020.9
03:0023.5
02:0022.4
01:0034.4
Sunday, 10/4
00:0044.3
23:0048.8
22:0052.5
21:0032
20:0027.5
19:0030.2
17:004.1
16:003.5
15:003.8
14:006.7
13:009.2
12:0025.8
11:0018.6
10:0017
09:0031.8
08:0047.6
07:0024.5
06:0015.7
05:0016.7
04:0010
03:0011.4
02:0022.9
01:0038
Saturday, 10/3
00:0040.4
23:0056.9
22:0059.5
21:0059.3
20:0043.4
19:0012.6
18:007.1
16:006.6
15:004.5
14:005.7
13:0015.3
12:0017
11:006.4
10:0021.6
09:0038.6
08:0039.4
07:0012.8
06:006.8
05:003.2
04:003.1
03:005.9
02:0016.2
01:004.5
Friday, 10/2
00:005.2
23:0034.2
22:0065.8
21:0051.1
20:0049.3
19:0015.4
18:008
17:007.3
15:005.8
14:005.3
13:0022.1
12:0032.5
11:0021.7
10:0059.8
09:0075.8
08:0074.7
07:0056.6
06:0026.9
05:0022.7
04:0015.1
03:0013.5
02:0016.5
01:0018.7
Thursday, 10/1
00:0031.7
23:0041
22:0048.1
21:0050
20:0049.6
19:0022
18:004.8
17:004.5
16:007.2
14:003.8
13:0010.6
12:0023.2
11:0027.8
10:0048.6
09:0067.7
08:0072.4
07:0058.5
06:0029.1
05:0014.1
04:0015.3
03:0018.6
02:0019.7
01:0032.8
Wednesday, 9/30
00:0032.6
23:0030.6
22:0022.1
Last 30 days, daily average: NO₂ in µg/m³highest 32 µg/m³, latest 30 µg/m³020409/99/169/239/30highest 32latest 30
Last 30 days, daily average: NO₂ in µg/m³
Values as a table
Dayµg/m³Note
Tue, 10/629.9provisional
Mon, 10/530provisional
Sun, 10/423.6provisional
Sat, 10/321.2provisional
Fri, 10/230.6provisional
Thu, 10/130.5provisional
Wed, 9/3019.8provisional
Tue, 9/2924provisional
Mon, 9/2827.7provisional
Sun, 9/2713.6provisional
Sat, 9/263.8provisional
Fri, 9/253provisional
Thu, 9/2412.2provisional
Wed, 9/235.6provisional
Tue, 9/222.8provisional
Mon, 9/2113.2provisional
Sun, 9/2014.8provisional
Sat, 9/1923provisional
Fri, 9/1820.1provisional
Thu, 9/1719.4provisional
Wed, 9/1618.1provisional
Tue, 9/153.6provisional
Mon, 9/146.7provisional
Sun, 9/132.9provisional
Sat, 9/123.7provisional
Fri, 9/117.3provisional
Thu, 9/1016.3provisional
Wed, 9/921.9provisional
Tue, 9/831.7provisional
Mon, 9/723.3provisional
Last 12 months, monthly average: NO₂ in µg/m³highest 28 µg/m³, latest 28 µg/m³0204060DecFebAprJunAugOcthighest 28
Last 12 monthsthis month so fara year earlierEU 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
Monthµg/m³a year earlierNote
October 2026 so far27.66.9measured in 96 % of hours · provisional · year before: same days
September 202614.920.3measured in 95 % of hours · provisional
August 202619.920.6measured in 96 % of hours · provisional
July 202614.919measured in 85 % of hours · provisional
June 202612.918.5measured in 92 % of hours · provisional
May 2026too few readings12measured in 73 % of hours · provisional · 6 days without data from the station
April 202610.3too few readingsmeasured in 96 % of hours · provisional
March 202615.712.5measured in 92 % of hours · provisional
February 202616.318.3measured in 96 % of hours · provisional
January 202619.819.3measured in 96 % of hours · provisional
December 202525.116.2measured in 99 % of hours · verified
November 202517.2too few readingsmeasured in 86 % of hours · verified

NO₂ by year

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

Measure2026*20252024
Hours above 200 µg/m³ (allowed 18)000
Hours above 400 µg/m³, three hours in a row (alert threshold)000
Annual average, µg/m³ (EU limit 40)15.4*17.818.1
Highest daily average, µg/m³43August 2948August 946August 17
Highest hourly value, µg/m³90August 27103August 993August 17
Hours measured91 %94 %92 %
Days without any reading from the station6114

* 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

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 50 µg/m³, 18 days allowed. In 2026 there were 0 such days.
  • WHO 2021: daily 25 µg/m³, at most three to four days a year. In 2026 there were 41 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: 8

2 outages, 196 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

FromToDuration
Jul 21, 2026 09:00Jul 22, 2026 09:0024 hours
May 7, 2026 11:00May 14, 2026 15:007 days

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 Mjerna mreža Cemex Hrvatska d.o.o.. 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.