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Air at the Ptuj station

Ptuj, Slovenia

Network: Slovenian Environment Agency · Station code: SI0077A

This year, up to yesterday (October 6)

9 days

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

35 days are allowed in the whole year.

In 2025: 8 days above the limit, 35 allowed.

Worst day: January 24, 2026, PM10 107 µg/m³ as a daily average, 2.1 times the limit.

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

All figures by year and month

Fair

Air now · Measured at 20:00

Latest values

Latest value: 20:00

Readings
PollutantValueLevel
PM1021.7 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 20.7 µg/m³, week before 12.5 µg/m³
  • PM2.5: average 11.6 µg/m³, week before 8.3 µg/m³

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

  • PM10: average 9.9 µg/m³, month before 14.4 µg/m³
  • PM2.5: average 5.5 µg/m³, month before 8.2 µg/m³

Show

Particulate matter PM10

21.7

Nowµg/m³

Measured at 20:00

24.1

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

20.7

Last 7 daysµg/m³

measured in 99 % of hours · provisional

12.4

Last 30 daysµg/m³

measured in 100 % of hours · provisional

18.5

Last 12 monthsµg/m³

measured in 100 % of hours · provisional

Days in 2026: PM10, daily average above 50 µg/m³

9 days above the limit.

1102031JanJan 8: 63 µg/m³, above the limitJan 9: 79 µg/m³, above the limitJan 12: 66 µg/m³, above the limitJan 20: 57 µg/m³, above the limitJan 21: 51 µg/m³, above the limitJan 22: 75 µg/m³, above the limitJan 23: 106 µg/m³, above the limitJan 24: 107 µg/m³, above the limitJan 25: 53 µg/m³, above the limitFebMarAprMayJunJulAugSepOctNovDec
  • above the limit
  • below the limit
Days above the limit with values (9)
  1. Jan 8 63
  2. Jan 9 79
  3. Jan 12 66
  4. Jan 20 57
  5. Jan 21 51
  6. Jan 22 75
  7. Jan 23 106
  8. Jan 24 107
  9. Jan 25 53

Values in µg/m³, limit 50 µg/m³.

Months of 2026

MonthDays above 50Highest dayNo readings
January9 above the number allowed1070
February0410
March0440
April0280
May0240
June0290
July0260
August0250
September0210
October up to yesterday0260

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 41 µg/m³, latest 18 µg/m³ (19:00)0204060ThuFriSatSunMonTueWedlatest 18 (19:00)
measuredmodel estimate, not counted
Last 7 days, every hour: PM10 in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
20:0022model estimate, not counted
19:0017.7
18:0017.6
17:0016.5
16:0019.3
15:0017.9
14:0018.5
13:0019.7
12:0022.8
11:0023
10:0028.7
09:0033.4
08:0035
07:0028.1
06:0021
05:0019.2
04:0019.2
03:0020.9
02:0022.6
01:0022.8
Tuesday, 10/6
00:0030.7
23:0034
22:0040.8
21:0040.2
20:0041.4
19:0026.9
18:0023.1
17:0022.2
16:0021.1
15:0020.1
14:0018.8
13:0022.8
12:0028.6
11:0022.1
10:0026.5
09:0031.2
08:0033.8
07:0020.7
06:0019.5
05:0019.6
04:0020.9
03:0022.8
02:0022.5
01:0024.3
Monday, 10/5
00:0023.8
23:0024.6
22:0029.9
21:0027.4
20:0029.7
19:0019.6
18:0015.8
17:0015.3
16:0014.8
15:0015
14:0017.9
13:0022.3
12:0031.8
11:0023.4
10:0029.7
09:0031
08:0029
07:0019.1
06:0016.7
05:0015.9
04:0016.2
03:0014.4
02:0013.7
01:0014.5
Sunday, 10/4
00:0014.9
23:0016.6
22:0020.9
21:0024.7
20:0024.1
19:0015.6
18:0013.8
17:0013.5
16:0013.3
15:0013.5
14:0014.7
13:0017.9
12:0016.9
11:0017
09:0015.8
08:0014.5
07:0013.5
06:0011.7
05:0013.9
04:0016.5
03:0015
02:0014.8
01:0018.3
Saturday, 10/3
00:0020.9
23:0027.9
22:0027.4
21:0037.8
20:0033.6
19:0017.4
18:0016.1
17:0015.5
16:0014
15:0015.9
14:0016
13:0019.9
12:0022
11:0024
10:0019.5
09:0023.3
08:0017.6
07:0015.3
06:0015.3
05:0013.9
04:0014
03:0014
02:0014.8
01:0018.6
Friday, 10/2
00:0021.2
23:0020.7
22:0024.8
21:0028.6
20:0027.9
19:0016.5
18:0017.3
17:0017.6
16:0017.8
15:0017
14:0027.9
13:0030
12:0024.2
11:0024.9
10:0025.4
09:0026
08:0031.3
07:0016.8
06:0016.7
05:0013.5
04:0013.5
03:0014.2
02:0016.1
01:0020
Thursday, 10/1
00:0019.2
23:0021.6
22:0025.6
21:0040.9
20:0019.8
19:0018.7
18:0014.8
17:0016
16:0018.5
15:0019.2
14:0017.8
13:0022.4
12:0023.2
11:0027.2
10:0032.7
09:0030.7
08:0030.2
07:0024
06:0017.5
05:0017.4
04:0014.3
03:0014
02:0014
01:0014.8
Wednesday, 9/30
00:0015.9
23:0018.7
Last 30 days, daily average: PM10 in µg/m³highest 26 µg/m³, latest 26 µg/m³02040609/99/169/239/30highest 26
EU daily limit, 50 µg/m³
Last 30 days, daily average: PM10 in µg/m³
Values as a table
Dayµg/m³Note
Tue, 10/626.4provisional
Mon, 10/521.3provisional
Sun, 10/416.1provisional
Sat, 10/319.8provisional
Fri, 10/221.2provisional
Thu, 10/121.4provisional
Wed, 9/3018.3provisional
Tue, 9/2920.7provisional
Mon, 9/2819.5provisional
Sun, 9/2713.2provisional
Sat, 9/267.6provisional
Fri, 9/256.1provisional
Thu, 9/2412.6provisional
Wed, 9/238.2provisional
Tue, 9/228.7provisional
Mon, 9/2110.1provisional
Sun, 9/208.9provisional
Sat, 9/199.7provisional
Fri, 9/187.5provisional
Thu, 9/179.8provisional
Wed, 9/168.6provisional
Tue, 9/157.1provisional
Mon, 9/147.5provisional
Sun, 9/138provisional
Sat, 9/126.6provisional
Fri, 9/114.1provisional
Thu, 9/104.2provisional
Wed, 9/915.9provisional
Tue, 9/812.3provisional
Mon, 9/710.9provisional
Last 12 months, monthly average: PM10 in µg/m³highest 41 µg/m³, latest 21 µg/m³0204060DecFebAprJunAugOcthighest 41latest 21
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 far21.111measured in 99 % of hours · provisional · year before: same days
September 20269.99.7measured in 100 % of hours · provisional
August 202614.412.2measured in 100 % of hours · provisional
July 2026129.1measured in 100 % of hours · provisional
June 202612.814.5measured in 100 % of hours · provisional
May 202610.811measured in 100 % of hours · provisional
April 202615.714.6measured in 100 % of hours · provisional
March 202623.215.9measured in 100 % of hours · provisional
February 202624.537.7measured in 100 % of hours · provisional
January 202641.420.2measured in 100 % of hours · provisional
December 202524.926.9measured in 100 % of hours · verified
November 202518.624.8measured in 100 % of hours · verified

PM10 by year

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

Measure2026*20252024
Days above 50 µg/m³ (allowed 35)9813
Annual average, µg/m³ (EU limit 40)18.3*16.519.3
Highest daily average, µg/m³107January 2470February 24134April 1
Highest hourly value, µg/m³142March 9115December 12254April 1
Hours measured100 %100 %100 %
Days without any reading from the station000

* 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 2026 there were 12 such days.
  • WHO 2021: daily 45 µg/m³, at most three to four days a year. In 2026 there were 12 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 2026

DayAverageTimes the limit
Jan 24, 2026provisional1072.1 ×
Jan 23, 2026provisional1062.1 ×
Jan 9, 2026provisional791.6 ×
Jan 22, 2026provisional751.5 ×
Jan 12, 2026provisional661.3 ×

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

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: 0

Timeline of outages from October 7, 2025 to today

In the last 12 months this station had no outage of 24 hours or longer.

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 Slovenian Environment Agency. 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.