Most polluted cities in Europe
11 of 644 measured cities in 36 countries were above the WHO 24-hour guideline over the last 30 days. The worst was Smederevo, Serbia, at 20.9 µg/m³.
← Smederevo 20.9 µg/m³
15 µg/m³ WHO 24-hour guideline0
Countries
| Country | Cities | Median | Cities by band |
|---|---|---|---|
| Montenegro | 5 | 17.0 | |
| Bosnia and Herzegovina | 4 | 14.7 | |
| Serbia | 8 | 13.9 | |
| Croatia | 1 | 11.0 | |
| North Macedonia | 13 | 10.6 | |
| Albania | 1 | 10.4 | |
| Italy | 13 | 10.1 | |
| Spain | 64 | 8.8 | |
| Romania | 20 | 8.3 | |
| Poland | 56 | 8.1 | |
| Greece | 3 | 7.7 | |
| Monaco | 1 | 7.6 | |
| Malta | 1 | 7.5 | |
| Hungary | 11 | 7.4 | |
| Slovakia | 30 | 7.4 | |
| Andorra | 1 | 6.8 | |
| The Netherlands | 30 | 6.6 | |
| Switzerland | 5 | 6.1 | |
| Germany | 141 | 6.1 | |
| Portugal | 4 | 6.0 | |
| Austria | 21 | 6.0 | |
| Luxembourg | 2 | 6.0 | |
| Belgium | 38 | 5.8 | |
| Slovenia | 8 | 5.7 | |
| France | 102 | 5.5 | |
| Ireland | 21 | 5.2 | |
| Bulgaria | 10 | 4.7 | |
| Latvia | 2 | 4.7 | |
| Czechia | 2 | 4.6 | |
| Sweden | 1 | 3.8 | |
| Denmark | 1 | 3.6 | |
| Finland | 12 | 3.4 | |
| Jersey | 1 | 3.2 | |
| United Kingdom | 5 | 2.9 | |
| Estonia | 4 | 2.7 | |
| Iceland | 2 | 2.0 |
Worst cities
- 1SmederevoCentral Serbia, Serbia 73
- 2NikšićOpština Nikšić, Montenegro 72
- 3PljevljaPljevlja, Montenegro 71
- 4Alcalá de GuadairaAndalusia, Spain 67
- 5PodgoricaPodgorica, Montenegro 66
- 6ObrenovacCentral Serbia, Serbia 65
- 7SevillaAndalusia, Spain 64
- 8HuelvaAndalusia, Spain 63
- 9TrebinjeSrpska, Bosnia and Herzegovina 63
- 10Novi PazarCentral Serbia, Serbia 63
- 11PrijedorSrpska, Bosnia and Herzegovina 62
- 12OtwockMazovia, Poland 62
- 13Portolow-cost sensorsPorto, Portugal 61
- 14UžiceCentral Serbia, Serbia 61
- 15SuceavaSuceava, Romania 61
- 16Bijelo PoljeBijelo Polje, Montenegro 61
- 17SarajevoFederation of B&H, Bosnia and Herzegovina 61
- 18TetovoTetovo, North Macedonia 60
- 19MilanLombardy, Italy 60
- 20ArrecifeCanary Islands, Spain 60
- 21BelgradeCentral Serbia, Serbia 59
- 22Târgu Mureşlow-cost sensorsMureș County, Romania 59
- 23GostivarGostivar, North Macedonia 59
- 24NichelinoPiedmont, Italy 58
- 25ManlleuCatalonia, Spain 58
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 07:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.