Most polluted cities in Europe
31 of 676 measured cities in 36 countries were above the WHO 24-hour guideline over the last 7 days. The worst was Obrenovac, Serbia, at 23.4 µg/m³.
← Obrenovac 23.4 µg/m³
15 µg/m³ WHO 24-hour guideline0
Countries
| Country | Cities | Median | Cities by band |
|---|---|---|---|
| Croatia | 1 | 19.6 | |
| Serbia | 8 | 18.0 | |
| Bosnia and Herzegovina | 4 | 14.8 | |
| Poland | 56 | 13.0 | |
| Denmark | 1 | 12.0 | |
| Switzerland | 5 | 11.5 | |
| Czechia | 2 | 11.0 | |
| Romania | 20 | 10.1 | |
| Hungary | 11 | 10.0 | |
| Italy | 22 | 9.9 | |
| The Netherlands | 32 | 9.7 | |
| Albania | 1 | 9.3 | |
| Germany | 143 | 9.2 | |
| Slovakia | 31 | 9.1 | |
| Monaco | 1 | 9.1 | |
| Montenegro | 5 | 9.0 | |
| Spain | 82 | 9.0 | |
| North Macedonia | 13 | 8.8 | |
| Austria | 19 | 8.8 | |
| Slovenia | 8 | 8.8 | |
| Malta | 4 | 8.8 | |
| Luxembourg | 2 | 8.7 | |
| Belgium | 38 | 8.6 | |
| Portugal | 5 | 7.5 | |
| France | 94 | 7.4 | |
| Latvia | 4 | 7.1 | |
| Andorra | 1 | 6.7 | |
| Greece | 3 | 6.6 | |
| Sweden | 4 | 5.7 | |
| Ireland | 25 | 5.5 | |
| Bulgaria | 7 | 5.1 | |
| United Kingdom | 5 | 4.9 | |
| Jersey | 1 | 4.8 | |
| Finland | 12 | 3.6 | |
| Estonia | 4 | 3.4 | |
| Iceland | 2 | 1.1 |
Worst cities
- 1ObrenovacCentral Serbia, Serbia 78
- 2AostaAosta Valley, Italy 76
- 3PrijedorSrpska, Bosnia and Herzegovina 73
- 4Târgu Mureşlow-cost sensorsMureș County, Romania 72
- 5OtwockMazovia, Poland 71
- 6SmederevoCentral Serbia, Serbia 71
- 7UžiceCentral Serbia, Serbia 71
- 8Zagreblow-cost sensorsZagreb, Croatia 71
- 9BelgradeCentral Serbia, Serbia 68
- 10Novi PazarCentral Serbia, Serbia 67
- 11Banja LukaSrpska, Bosnia and Herzegovina 67
- 12PljevljaPljevlja, Montenegro 66
- 13SuceavaSuceava, Romania 66
- 14RadomskoŁódź Voivodeship, Poland 65
- 15SevillaAndalusia, Spain 65
- 16KaliszGreater Poland, Poland 65
- 17Alcalá de GuadairaAndalusia, Spain 65
- 18OurenseGalicia, Spain 65
- 19BraPiedmont, Italy 64
- 20StarachowiceŚwiętokrzyskie, Poland 64
- 21MilanLombardy, Italy 64
- 22ZamośćLublin, Poland 63
- 23HuelvaAndalusia, Spain 63
- 24Novi SadVojvodina, Serbia 63
- 25RzeszówSubcarpathia, Poland 63
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Updated 2026-10-02 10:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.