Air at the Osijek-2 station
Osijek, Croatia
Network: Državna mreža za trajno praćenje kvalitete zraka · Station code: HR0038A
This year, up to yesterday (October 6)
No measured day above the EU limit in 2026.
Daily average for 259 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
Good
Air now · Measured at 19:00
Latest values
Latest value: 19:00
| Pollutant | Value | Level |
|---|---|---|
| SO₂ | 5.1 µg/m³ | Good |
How the air is changing
Over the last seven days there was more SO₂ in the air than the week before.
- SO₂: average 3.5 µg/m³, week before 2 µg/m³
Last month there was less SO₂ in the air than the month before.
- SO₂: average 2.6 µg/m³, month before 4.2 µg/m³
Sulphur dioxide SO₂
5.1
Nowµg/m³
Measured at 19:00
7
Last 24 hoursµg/m³
measured in 83 % of hours · provisional
3.5
Last 7 daysµg/m³
measured in 100 % of hours · provisional
2.8
Last 30 daysµg/m³
measured in 100 % of hours · provisional
3.1
Last 12 monthsµg/m³
measured in 94 % of hours · provisional
Days in 2024: SO₂, daily average above 125 µg/m³
No measured day above the limit. 12 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 | Days above 125 | Hours above 350 | Highest day | No readings |
|---|---|---|---|---|
| January | 0 | 0 | 16 | 0 |
| February | 0 | 0 | 17 | 0 |
| March | 0 | 0 | 8 | 3 |
| April | 0 | 0 | 10 | 0 |
| May | 0 | 0 | 6 | 6 |
| June | 0 | 0 | 6 | 0 |
| July | 0 | 0 | 7 | 0 |
| August | 0 | 0 | 18 | 0 |
| September | 0 | 0 | 10 | 0 |
| October | 0 | 0 | 10 | 3 |
| November | 0 | 0 | 12 | 0 |
| December | 0 | 0 | 16 | 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.
Values as a table
| Hour to | µg/m³ | Note |
|---|---|---|
| Wednesday, 10/7 | ||
| 18:00 | 5.8 | |
| 17:00 | 4.6 | |
| 16:00 | 8.2 | |
| 15:00 | 8.9 | |
| 14:00 | 14 | |
| 13:00 | 19.2 | |
| 12:00 | 25.4 | |
| 11:00 | 21.1 | |
| 10:00 | 10.8 | |
| 09:00 | 2.6 | |
| 08:00 | 1.8 | |
| 07:00 | 2 | |
| 06:00 | 1.9 | |
| 05:00 | 2.4 | |
| 04:00 | 1.7 | |
| 03:00 | 2.2 | |
| 02:00 | 1.8 | |
| 01:00 | 1.9 | |
| Tuesday, 10/6 | ||
| 00:00 | 1.7 | |
| 23:00 | 1.9 | |
| 22:00 | 2 | |
| 21:00 | 2.3 | |
| 20:00 | 2 | |
| 19:00 | 2.2 | |
| 18:00 | 4.3 | |
| 17:00 | 5.5 | |
| 16:00 | 6 | |
| 15:00 | 5.1 | |
| 14:00 | 4.9 | |
| 13:00 | 6.8 | |
| 12:00 | 8.4 | |
| 11:00 | 5.9 | |
| 10:00 | 3.4 | |
| 09:00 | 2.1 | |
| 08:00 | 1.9 | |
| 07:00 | 1.3 | |
| 06:00 | 1.3 | |
| 05:00 | 1.6 | |
| 04:00 | 1.9 | |
| 03:00 | 1.7 | |
| 02:00 | 1.7 | |
| 01:00 | 0.7 | |
| Monday, 10/5 | ||
| 00:00 | 1.6 | |
| 23:00 | 1.9 | |
| 22:00 | 2.1 | |
| 21:00 | 2.1 | |
| 20:00 | 3.5 | |
| 19:00 | 6.2 | |
| 18:00 | 10.6 | |
| 17:00 | 9.3 | |
| 16:00 | 5.8 | |
| 15:00 | 6.5 | |
| 14:00 | 4.8 | |
| 13:00 | 3.5 | |
| 12:00 | 3.7 | |
| 11:00 | 3 | |
| 10:00 | 2.4 | |
| 09:00 | 1.5 | |
| 08:00 | 1.8 | |
| 07:00 | 1.9 | |
| 06:00 | 2 | |
| 05:00 | 1.5 | |
| 04:00 | 1.4 | |
| 03:00 | 1.7 | |
| 02:00 | 1.5 | |
| 01:00 | 1.3 | |
| Sunday, 10/4 | ||
| 00:00 | 1.9 | |
| 23:00 | 1.4 | |
| 22:00 | 1 | |
| 21:00 | 0.5 | |
| 20:00 | 1.2 | |
| 19:00 | 2.2 | |
| 18:00 | 3.1 | |
| 17:00 | 2.7 | |
| 16:00 | 2.4 | |
| 15:00 | 2.6 | |
| 14:00 | 2.4 | |
| 13:00 | 2.8 | |
| 12:00 | 3.1 | |
| 11:00 | 8.8 | |
| 10:00 | 4.9 | |
| 09:00 | 2.1 | |
| 08:00 | 1.2 | |
| 07:00 | 1.2 | |
| 06:00 | 1.4 | |
| 05:00 | 1.7 | |
| 04:00 | 1.5 | |
| 03:00 | 1.1 | |
| 02:00 | 1.2 | |
| 01:00 | 1.2 | |
| Saturday, 10/3 | ||
| 00:00 | 1.2 | |
| 23:00 | 1.8 | |
| 22:00 | 2.3 | |
| 21:00 | 3 | |
| 20:00 | 4.2 | |
| 19:00 | 12.7 | |
| 18:00 | 17.3 | |
| 17:00 | 6.4 | |
| 16:00 | 2.6 | |
| 15:00 | 3.3 | |
| 14:00 | 4.4 | |
| 13:00 | 5.1 | |
| 12:00 | 4.3 | |
| 11:00 | 5.7 | |
| 10:00 | 5.9 | |
| 09:00 | 1.9 | |
| 08:00 | 1.4 | |
| 07:00 | 0.9 | |
| 06:00 | 0.8 | |
| 05:00 | 0.1 | |
| 04:00 | 1.5 | |
| 03:00 | 0.8 | |
| 02:00 | 1.4 | |
| 01:00 | 1.5 | |
| Friday, 10/2 | ||
| 00:00 | 1.6 | |
| 23:00 | 1.8 | |
| 22:00 | 2.4 | |
| 21:00 | 2.9 | |
| 20:00 | 2.4 | |
| 19:00 | 2.5 | |
| 18:00 | 2.5 | |
| 17:00 | 2.6 | |
| 16:00 | 8.3 | |
| 15:00 | 15.7 | |
| 14:00 | 7.3 | |
| 13:00 | 16.9 | |
| 12:00 | 15.7 | |
| 11:00 | 16 | |
| 10:00 | 11.4 | |
| 09:00 | 2.8 | |
| 08:00 | 1.2 | |
| 07:00 | 0.8 | |
| 06:00 | 1.3 | |
| 05:00 | 1 | |
| 04:00 | 0.8 | |
| 03:00 | 1 | |
| 02:00 | 1.5 | |
| 01:00 | 1.7 | |
| Thursday, 10/1 | ||
| 00:00 | 1.8 | |
| 23:00 | 2.2 | |
| 22:00 | 2.8 | |
| 21:00 | 4 | |
| 20:00 | 3.7 | |
| 19:00 | 2.4 | |
| 18:00 | 1.9 | |
| 17:00 | 2.3 | |
| 16:00 | 2.3 | |
| 15:00 | 2.6 | |
| 14:00 | 9.6 | |
| 13:00 | 4.1 | |
| 12:00 | 4.3 | |
| 11:00 | 5.5 | |
| 10:00 | 9.9 | |
| 09:00 | 5.9 | |
| 08:00 | 1.9 | |
| 07:00 | 2 | |
| 06:00 | 1.5 | |
| 05:00 | 1.1 | |
| 04:00 | 1.5 | |
| 03:00 | 1.5 | |
| 02:00 | 3 | |
| 01:00 | 2.7 | |
| Wednesday, 9/30 | ||
| 00:00 | 2.5 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 3.2 | provisional |
| Mon, 10/5 | 3.4 | provisional |
| Sun, 10/4 | 2.2 | provisional |
| Sat, 10/3 | 3.8 | provisional |
| Fri, 10/2 | 5.1 | provisional |
| Thu, 10/1 | 3.4 | provisional |
| Wed, 9/30 | 3.1 | provisional |
| Tue, 9/29 | 2.2 | provisional |
| Mon, 9/28 | 1.9 | provisional |
| Sun, 9/27 | 2 | provisional |
| Sat, 9/26 | 1.9 | provisional |
| Fri, 9/25 | 1.9 | provisional |
| Thu, 9/24 | 2 | provisional |
| Wed, 9/23 | 1.9 | provisional |
| Tue, 9/22 | 1.9 | provisional |
| Mon, 9/21 | 2.1 | provisional |
| Sun, 9/20 | 3.6 | provisional |
| Sat, 9/19 | 2.1 | provisional |
| Fri, 9/18 | 2.3 | provisional |
| Thu, 9/17 | 3.1 | provisional |
| Wed, 9/16 | 4.1 | provisional |
| Tue, 9/15 | 2 | provisional |
| Mon, 9/14 | 2.2 | provisional |
| Sun, 9/13 | 2.1 | provisional |
| Sat, 9/12 | 2 | provisional |
| Fri, 9/11 | 2.1 | provisional |
| Thu, 9/10 | 2.3 | provisional |
| Wed, 9/9 | 8.5 | provisional |
| Tue, 9/8 | 3.4 | provisional |
| Mon, 9/7 | 2.1 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 3.5 | 3.7 | measured in 100 % of hours · provisional · year before: same days |
| September 2026 | 2.6 | 4.8 | measured in 98 % of hours · provisional |
| August 2026 | 4.2 | 4 | measured in 98 % of hours · provisional |
| July 2026 | 2.1 | 3.4 | measured in 99 % of hours · provisional |
| June 2026 | 1.6 | 2.5 | measured in 94 % of hours · provisional |
| May 2026 | too few readings | too few readings | measured in 50 % of hours · provisional · 12 days without data from the station |
| April 2026 | 1.3 | 3.5 | measured in 97 % of hours · provisional |
| March 2026 | 2.4 | 5 | measured in 97 % of hours · provisional |
| February 2026 | 3.1 | 5.1 | measured in 98 % of hours · provisional |
| January 2026 | 2.6 | 6 | measured in 99 % of hours · provisional |
| December 2025 | 4.9 | 3.4 | measured in 100 % of hours · verified |
| November 2025 | 4.7 | 3.8 | measured in 100 % of hours · verified |
SO₂ by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Days above 125 µg/m³ (allowed 3) | 0 | 0 | 0 |
| Hours above 350 µg/m³ (allowed 24) | 0 | 0 | 0 |
| Hours above 500 µg/m³, three hours in a row (alert threshold) | 0 | 0 | 0 |
| Annual average, µg/m³ | 2.5* | 4.4 | 3.6 |
| Highest daily average, µg/m³ | 13August 10 | 43January 19 | 18August 1 |
| Highest hourly value, µg/m³ | 40March 4 | 120February 21 | 100August 23 |
| Hours measured | 92 % | 95 % | 93 % |
| Days without any reading from the station | 12 | 12 | 12 |
* 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
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 2024 there were 0 such days.
- WHO 2021: daily 40 µg/m³, at most three to four days a year. In 2024 there were 0 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2024: 4 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.
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: 17
5 outages, 404 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Aug 31, 2026 13:00 | Sep 1, 2026 14:00 | 25 hours |
| Jun 4, 2026 09:00 | Jun 5, 2026 10:00 | 25 hours |
| May 25, 2026 13:00 | May 29, 2026 15:00 | 4 days |
| May 22, 2026 19:00 | May 25, 2026 12:00 | 3 days |
| May 13, 2026 13:00 | May 21, 2026 12:00 | 8 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 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.
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