Air at the Smederevo-Carina station
Smederevo, Serbia
Network: Agency for Environmental Protection · Station code: RS0039A
This year, up to yesterday (October 6)
No exceedance on the measured days. 187 of 279 days were measured.
Daily average for 187 of 279 days · data for 2026 not yet finally verified · Yardstick: EU limits (Directive 2008/50/EC)
Moderate
Air now · Measured at 21:00
Latest values
Latest value: 21:00
| Pollutant | Value | Level |
|---|---|---|
| NO₂ | 56.1 µg/m³ | Moderate |
How the air is changing
Over the last seven days there was more NO₂ in the air than the week before.
- NO₂: average 20.4 µg/m³, week before 16.5 µg/m³
Last month the values were about the same as the month before.
- NO₂: average 15.1 µg/m³, month before 14.4 µg/m³
Nitrogen dioxide NO₂
56.1
Nowµg/m³
Measured at 21:00
19.9
Last 24 hoursµg/m³
measured in 96 % of hours · provisional
20.4
Last 7 daysµg/m³
measured in 99 % of hours · provisional
17
Last 30 daysµg/m³
measured in 99 % of hours · provisional
too few readings
Last 12 months
measured in 73 % of hours · provisional
Days in 2025: NO₂, at least one hour above 200 µg/m³
No measured day above the limit. 4 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 2025
| Month | Days with an hour above 200 | Hours above 200 | Highest day | No readings |
|---|---|---|---|---|
| January | 0 | 0 | 25 | 0 |
| February | 0 | 0 | 36 | 0 |
| March | 0 | 0 | 30 | 0 |
| April | 0 | 0 | 20 | 3 |
| May | 0 | 0 | 17 | 0 |
| June | 0 | 0 | 21 | 0 |
| July | 0 | 0 | 22 | 0 |
| August | 0 | 0 | 22 | 0 |
| September | 0 | 0 | 19 | 0 |
| October | 0 | 0 | 29 | 0 |
| November | 0 | 0 | 29 | 1 |
| December | 0 | 0 | 35 | 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 | ||
| 20:00 | 53.1 | |
| 19:00 | 37.9 | |
| 18:00 | 19.8 | |
| 17:00 | 15.4 | |
| 16:00 | 12.4 | |
| 15:00 | 14 | |
| 14:00 | 14.7 | |
| 13:00 | 16.6 | |
| 12:00 | 16.5 | |
| 11:00 | 23.2 | |
| 10:00 | 18.5 | |
| 09:00 | 16.1 | |
| 08:00 | 12.7 | |
| 07:00 | 9.7 | |
| 06:00 | 11.3 | |
| 05:00 | 14.8 | |
| 04:00 | 10 | |
| 03:00 | 12.5 | |
| 02:00 | 18.8 | |
| 01:00 | 26.4 | |
| Tuesday, 10/6 | ||
| 00:00 | 26.7 | |
| 23:00 | 29.1 | |
| 22:00 | 26.7 | |
| 21:00 | 25.4 | |
| 20:00 | 20 | |
| 19:00 | 40.2 | |
| 18:00 | 37.8 | |
| 17:00 | 22.3 | |
| 16:00 | 18.4 | |
| 15:00 | 15.4 | |
| 14:00 | 17.6 | |
| 13:00 | 32.3 | |
| 12:00 | 42.6 | |
| 11:00 | 45.9 | |
| 10:00 | 54.6 | |
| 09:00 | 49.7 | |
| 08:00 | 21.6 | |
| 07:00 | 11.8 | |
| 06:00 | 15 | |
| 05:00 | 13.9 | |
| 04:00 | 13.7 | |
| 03:00 | 9.2 | |
| 02:00 | 8.5 | |
| 01:00 | 12 | |
| Monday, 10/5 | ||
| 00:00 | 13.2 | |
| 23:00 | 25 | |
| 22:00 | 31.1 | |
| 20:00 | 37.7 | |
| 19:00 | 60.1 | |
| 18:00 | 37.3 | |
| 17:00 | 13.6 | |
| 16:00 | 17.7 | |
| 15:00 | 18.5 | |
| 14:00 | 15.9 | |
| 13:00 | 20 | |
| 12:00 | 35.8 | |
| 11:00 | 46.2 | |
| 10:00 | 61.9 | |
| 09:00 | 55.7 | |
| 08:00 | 48.8 | |
| 07:00 | 22 | |
| 06:00 | 21.1 | |
| 05:00 | 28.5 | |
| 04:00 | 10.7 | |
| 03:00 | 10.4 | |
| 02:00 | 11.9 | |
| 01:00 | 14.1 | |
| Sunday, 10/4 | ||
| 00:00 | 14.9 | |
| 23:00 | 14.9 | |
| 22:00 | 17.9 | |
| 21:00 | 17.3 | |
| 20:00 | 22.9 | |
| 19:00 | 32.1 | |
| 18:00 | 20.2 | |
| 17:00 | 13.8 | |
| 16:00 | 10.6 | |
| 15:00 | 11.7 | |
| 14:00 | 13 | |
| 13:00 | 15.4 | |
| 12:00 | 19.7 | |
| 11:00 | 22.9 | |
| 10:00 | 10.8 | |
| 09:00 | 12.5 | |
| 08:00 | 29.5 | |
| 07:00 | 33 | |
| 06:00 | 26.1 | |
| 05:00 | 26.5 | |
| 04:00 | 18.4 | |
| 03:00 | 23.4 | |
| 02:00 | 15.1 | |
| 01:00 | 31.5 | |
| Saturday, 10/3 | ||
| 00:00 | 21.5 | |
| 23:00 | 19 | |
| 22:00 | 26.9 | |
| 21:00 | 41.3 | |
| 20:00 | 28.4 | |
| 19:00 | 25 | |
| 18:00 | 14.4 | |
| 17:00 | 10.9 | |
| 16:00 | 9.1 | |
| 15:00 | 10.9 | |
| 14:00 | 9.5 | |
| 13:00 | 12.3 | |
| 12:00 | 15.4 | |
| 11:00 | 18.6 | |
| 10:00 | 15.2 | |
| 09:00 | 21.2 | |
| 08:00 | 17.9 | |
| 07:00 | 33.9 | |
| 06:00 | 21.4 | |
| 05:00 | 25.8 | |
| 04:00 | 26.7 | |
| 03:00 | 19.7 | |
| 02:00 | 5.4 | |
| 01:00 | 5.2 | |
| Friday, 10/2 | ||
| 00:00 | 6.2 | |
| 23:00 | 15.4 | |
| 22:00 | 49.2 | |
| 21:00 | 30.4 | |
| 19:00 | 35.8 | |
| 18:00 | 23 | |
| 17:00 | 19.7 | |
| 16:00 | 14.8 | |
| 15:00 | 13.1 | |
| 14:00 | 9.5 | |
| 13:00 | 9.6 | |
| 12:00 | 16.3 | |
| 11:00 | 19 | |
| 10:00 | 16.9 | |
| 09:00 | 24.7 | |
| 08:00 | 30 | |
| 07:00 | 31.1 | |
| 06:00 | 15.5 | |
| 05:00 | 9.7 | |
| 04:00 | 17.5 | |
| 03:00 | 14.6 | |
| 02:00 | 18.6 | |
| 01:00 | 16.1 | |
| Thursday, 10/1 | ||
| 00:00 | 23.6 | |
| 23:00 | 19 | |
| 22:00 | 22.1 | |
| 21:00 | 24.4 | |
| 20:00 | 32.5 | |
| 19:00 | 21.1 | |
| 18:00 | 12.7 | |
| 17:00 | 9.9 | |
| 16:00 | 9.2 | |
| 15:00 | 9.6 | |
| 14:00 | 9 | |
| 13:00 | 8.4 | |
| 12:00 | 9.5 | |
| 11:00 | 14.3 | |
| 10:00 | 16.5 | |
| 09:00 | 25.1 | |
| 08:00 | 23.6 | |
| 07:00 | 21.5 | |
| 06:00 | 17.4 | |
| 05:00 | 12.2 | |
| 04:00 | 11.9 | |
| 03:00 | 9.5 | |
| 02:00 | 14.4 | |
| 01:00 | 10.5 | |
| Wednesday, 9/30 | ||
| 00:00 | 12.8 | |
| 23:00 | 18.3 | |
Values as a table
| Day | µg/m³ | Note |
|---|---|---|
| Tue, 10/6 | 25.4 | provisional |
| Mon, 10/5 | 28.6 | provisional |
| Sun, 10/4 | 19.8 | provisional |
| Sat, 10/3 | 19 | provisional |
| Fri, 10/2 | 19.9 | provisional |
| Thu, 10/1 | 16.2 | provisional |
| Wed, 9/30 | 14.1 | provisional |
| Tue, 9/29 | 19.2 | provisional |
| Mon, 9/28 | 21.9 | provisional |
| Sun, 9/27 | 15.9 | provisional |
| Sat, 9/26 | 17.2 | provisional |
| Fri, 9/25 | 14.7 | provisional |
| Thu, 9/24 | 15.3 | provisional |
| Wed, 9/23 | 10.8 | provisional |
| Tue, 9/22 | 11.1 | provisional |
| Mon, 9/21 | 11.1 | provisional |
| Sun, 9/20 | 16.4 | provisional |
| Sat, 9/19 | 16.4 | provisional |
| Fri, 9/18 | 19.8 | provisional |
| Thu, 9/17 | 22.4 | provisional |
| Wed, 9/16 | 18.6 | provisional |
| Tue, 9/15 | 9.2 | provisional |
| Mon, 9/14 | 20.6 | provisional |
| Sun, 9/13 | 11.8 | provisional |
| Sat, 9/12 | 9.8 | provisional |
| Fri, 9/11 | 16.5 | provisional |
| Thu, 9/10 | 13.1 | provisional |
| Wed, 9/9 | 14.1 | provisional |
| Tue, 9/8 | 20 | provisional |
| Mon, 9/7 | 23 | provisional |
Values as a table
| Month | µg/m³ | a year earlier | Note |
|---|---|---|---|
| October 2026 so far | 21.4 | 13.1 | measured in 99 % of hours · provisional · year before: same days |
| September 2026 | 15.1 | 12.3 | measured in 99 % of hours · provisional |
| August 2026 | 14.4 | 13.3 | measured in 98 % of hours · provisional |
| July 2026 | 9.8 | 12.9 | measured in 97 % of hours · provisional |
| June 2026 | 11.8 | 12.1 | measured in 98 % of hours · provisional |
| May 2026 | 11 | 11.8 | measured in 97 % of hours · provisional |
| April 2026 | 14.7 | 13.5 | measured in 98 % of hours · provisional |
| March 2026 | too few readings | 15 | 31 days without data from the station |
| February 2026 | too few readings | 17.2 | 28 days without data from the station |
| January 2026 | too few readings | 16.4 | 31 days without data from the station |
| December 2025 | 18.8 | 18.9 | measured in 99 % of hours · verified |
| November 2025 | 16.9 | 18.8 | measured in 91 % of hours · verified · 1 day without data from the station |
NO₂ by year
Yardstick: EU limits (Directive 2008/50/EC)
| Measure | 2026* | 2025 | 2024 |
|---|---|---|---|
| Hours above 200 µg/m³ (allowed 18) | 0² | 0 | 0 |
| Hours above 400 µg/m³, three hours in a row (alert threshold) | 0 | 0 | 0 |
| Annual average, µg/m³ (EU limit 40) | too few | 14.6 | 14.3 |
| Highest daily average, µg/m³ | 29October 5 | 36February 25 | 38December 30 |
| Highest hourly value, µg/m³ | 62October 5 | 86March 6 | 84December 30 |
| Hours measured | 66 % | 95 % | 97 % |
| Days without any reading from the station | 90 | 4 | 1 |
* 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 2025 there were 0 such days.
- WHO 2021: daily 25 µg/m³, at most three to four days a year. In 2025 there were 24 such days.
- EU from 2030: annual average 20 µg/m³. Average in 2025: 15 µg/m³.
- WHO 2021: annual average 10 µg/m³. Average in 2025: 15 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: 92
2 outages, 2,215 hours in total in the last 12 months.
Timeline of outages from October 7, 2025 to today
| From | To | Duration |
|---|---|---|
| Jan 1, 2026 00:00 | Apr 1, 2026 01:00 | 90 days |
| Nov 19, 2025 09:00 | Nov 21, 2025 16:00 | 2 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 Agency for Environmental Protection. 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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