Most polluted cities in Europe
29 of 488 measured cities in 33 countries were above the WHO 24-hour guideline over the last 24 hours. The worst was Prijedor, Bosnia and Herzegovina, at 31.6 µg/m³.
← Prijedor 31.6
WHO 24-hour guideline
Countries
| Country | Cities | Median | Cities by band |
|---|---|---|---|
| Denmark | 1 | 23.1 | |
| Croatia | 1 | 19.9 | |
| Serbia | 6 | 14.8 | |
| Italy | 3 | 14.4 | |
| Bosnia and Herzegovina | 4 | 14.3 | |
| Czechia | 2 | 12.2 | |
| Hungary | 5 | 11.9 | |
| Slovakia | 22 | 11.4 | |
| Monaco | 1 | 10.4 | |
| Switzerland | 3 | 10.3 | |
| Romania | 19 | 10.2 | |
| Germany | 139 | 10.1 | |
| Sweden | 3 | 9.9 | |
| Slovenia | 6 | 9.8 | |
| Austria | 15 | 9.4 | |
| North Macedonia | 8 | 9.3 | |
| Montenegro | 4 | 8.7 | |
| Luxembourg | 1 | 8.5 | |
| Latvia | 4 | 8.4 | |
| Malta | 4 | 8.0 | |
| Andorra | 1 | 7.5 | |
| Greece | 1 | 6.7 | |
| Spain | 51 | 6.1 | |
| Finland | 10 | 5.9 | |
| Bulgaria | 9 | 5.9 | |
| Ireland | 24 | 5.6 | |
| The Netherlands | 19 | 5.2 | |
| Estonia | 4 | 5.1 | |
| France | 81 | 4.8 | |
| Belgium | 29 | 4.8 | |
| Portugal | 3 | 1.8 | |
| United Kingdom | 4 | 1.5 | |
| Jersey | 1 | 1.4 |
Worst cities
- 1PrijedorSrpska, Bosnia and Herzegovina 31.62.1×
- 2AostaAosta Valley, Italy 30.02.0×
- 3LandshutBavaria, Germany 23.71.6×
- 4BellinzonaTicino, Switzerland 23.51.6×
- 5Copenhagenlow-cost sensorsCapital Region, Denmark 23.11.5×
- 6NurembergBavaria, Germany 22.61.5×
- 7Zagreblow-cost sensorsZagreb, Croatia 19.91.3×
- 8Banja LukaSrpska, Bosnia and Herzegovina 19.51.3×
- 9KelheimBavaria, Germany 18.91.3×
- 10Târgu Mureşlow-cost sensorsMureș County, Romania 18.31.2×
- 11Novi PazarCentral Serbia, Serbia 17.81.2×
- 12BurghausenBavaria, Germany 17.71.2×
- 13NauenBrandenburg, Germany 17.61.2×
- 14TeltowBrandenburg, Germany 17.51.2×
- 15KikindaVojvodina, Serbia 17.01.1×
- 16IngolstadtBavaria, Germany 16.91.1×
- 17Novi SadVojvodina, Serbia 16.61.1×
- 18ArlesProvence-Alpes-Côte d'Azur, France 16.51.1×
- 19PljevljaPljevlja, Montenegro 16.21.1×
- 20TraunreutBavaria, Germany 16.01.1×
- 21PassauBavaria, Germany 16.01.1×
- 22NeubrandenburgMecklenburg-Vorpommern, Germany 15.91.1×
- 23Königs WusterhausenBrandenburg, Germany 15.91.1×
- 24GeraThuringia, Germany 15.81.1×
- 25MurciaMurcia, Spain 15.61.0×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Updated 2026-10-02 05:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors in µg/m³.