SmogRank / Countries / United Kingdom / June 2025
Most polluted cities in United Kingdom, June 2025
57 cities in United Kingdom ranked by their average PM2.5 over the 30 days. Worst: Dartford at 10.1 µg/m³, #879 of 1,912 cities in the world. Cleanest: Saltash at 3.0. A city needs measurements on 70% of the days to be ranked.
- 1DartfordEngland 10.1
- 2LondonEngland 8.5
- 3ScunthorpeEngland 8.2
- 4SpekeEngland 7.9
- 5Manchesterlow-cost sensorsEngland 7.5
- 5Kingston upon HullEngland 7.5
- 7BelfastNorthern Ireland 7.2
- 8LeedsEngland 7.1
- 8CardiffWales 7.1
- 8BexleyEngland 7.1
- 8Canvey IslandEngland 7.1
- 12PlymouthEngland 6.8
- 13BristolEngland 6.6
- 14Newcastle upon TyneEngland 6.5
- 14HayesEngland 6.5
- 14BrightonEngland 6.5
- 17DoncasterEngland 6.4
- 18SouthamptonEngland 6.3
- 18SeafordEngland 6.3
- 18Clacton-on-SeaEngland 6.3
- 21PortsmouthEngland 6.2
- 22PrestonEngland 6.1
- 23Stoke-on-TrentEngland 6.0
- 23SheffieldEngland 6.0
- 23LeicesterEngland 6.0
- 23DerbyEngland 6.0
- 23Cheadle HulmeEngland 6.0
- 28WiganEngland 5.9
- 28LiverpoolEngland 5.9
- 28Birminghamlow-cost sensorsEngland 5.9
- 31YorkEngland 5.8
- 31NewportWales 5.8
- 31GlasgowScotland 5.8
- 31BarnstapleEngland 5.8
- 35NottinghamEngland 5.7
- 35GrangemouthScotland 5.7
- 35BarnsleyEngland 5.7
- 38NorwichEngland 5.6
- 38Briton FerryWales 5.6
- 40SunderlandEngland 5.5
- 40IrlamEngland 5.5
- 40ChesterfieldEngland 5.5
- 40AndoverEngland 5.5
- 44ReadingEngland 5.4
- 44LutonEngland 5.4
- 44Royal Leamington SpaEngland 5.4
- 44CannockEngland 5.4
- 44High PeakEngland 5.4
- 49EdinburghScotland 5.3
- 50GillinghamEngland 4.8
- 51WarringtonEngland 4.7
- 51OxfordEngland 4.7
- 53PenicuikScotland 4.6
- 53Newton AbbotEngland 4.6
- 55MiddlesbroughEngland 3.8
- 56DerryNorthern Ireland 3.2
- 57SaltashEngland 3.0
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+