SmogRank / Countries / United Kingdom / May 2025
Most polluted cities in United Kingdom, May 2025
57 cities in United Kingdom ranked by their average PM2.5 over the 31 days. Worst: Scunthorpe at 9.5 µg/m³, #658 of 2,193 cities in the world. Cleanest: Derry at 3.2. A city needs measurements on 70% of the days to be ranked.
- 1ScunthorpeEngland 9.5
- 1LondonEngland 9.5
- 3BexleyEngland 9.2
- 4SpekeEngland 9.1
- 4Canvey IslandEngland 9.1
- 6PlymouthEngland 8.5
- 7SouthamptonEngland 8.4
- 7Manchesterlow-cost sensorsEngland 8.4
- 7Clacton-on-SeaEngland 8.4
- 10LutonEngland 8.2
- 10Kingston upon HullEngland 8.2
- 10CardiffWales 8.2
- 10BrightonEngland 8.2
- 14LeedsEngland 8.1
- 15PortsmouthEngland 8.0
- 15BristolEngland 8.0
- 17BarnstapleEngland 7.9
- 18DoncasterEngland 7.8
- 19HayesEngland 7.7
- 20Birminghamlow-cost sensorsEngland 7.6
- 21YorkEngland 7.5
- 21Stoke-on-TrentEngland 7.5
- 21NottinghamEngland 7.5
- 21BelfastNorthern Ireland 7.5
- 25DerbyEngland 7.4
- 26SheffieldEngland 7.3
- 26NewmarketEngland 7.3
- 26Newcastle upon TyneEngland 7.3
- 26LeicesterEngland 7.3
- 26AndoverEngland 7.3
- 31GrangemouthScotland 7.2
- 32WiganEngland 7.1
- 32NewportWales 7.1
- 32LiverpoolEngland 7.1
- 32BarnsleyEngland 7.1
- 36Cheadle HulmeEngland 7.0
- 37SeafordEngland 6.9
- 37CannockEngland 6.9
- 39SunderlandEngland 6.8
- 39ReadingEngland 6.8
- 39PrestonEngland 6.8
- 39Royal Leamington SpaEngland 6.8
- 43GillinghamEngland 6.7
- 43Briton FerryWales 6.7
- 45IrlamEngland 6.6
- 45ChesterfieldEngland 6.6
- 47Newton AbbotEngland 6.3
- 48NorwichEngland 6.2
- 49GlasgowScotland 6.1
- 50WarringtonEngland 6.0
- 50EdinburghScotland 6.0
- 52OxfordEngland 5.9
- 53High PeakEngland 5.8
- 54MiddlesbroughEngland 5.4
- 55PenicuikScotland 4.8
- 56SaltashEngland 4.7
- 57DerryNorthern Ireland 3.2
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+