SmogRank / Countries / United Kingdom / February 2026
Most polluted cities in United Kingdom, February 2026
60 cities in United Kingdom ranked by their average PM2.5 over the 28 days. Worst: Northampton at 13.4 µg/m³, #562 of 2,251 cities in the world. Cleanest: Newton Abbot at 3.9. A city needs measurements on 70% of the days to be ranked.
- 1NorthamptonEngland 13.4
- 2NorwichEngland 10.8
- 2Kingston upon HullEngland 10.8
- 4ScunthorpeEngland 10.6
- 4LeedsEngland 10.6
- 6Cambridgelow-cost sensorsEngland 10.5
- 7DoncasterEngland 10.3
- 8SunderlandEngland 9.3
- 8NottinghamEngland 9.3
- 8LondonEngland 9.3
- 11SheffieldEngland 9.2
- 11DerbyEngland 9.2
- 13BarnsleyEngland 8.9
- 14ChesterfieldEngland 8.8
- 15Newcastle upon TyneEngland 8.7
- 15CardiffWales 8.7
- 17LeicesterEngland 8.6
- 18YorkEngland 8.4
- 19BelfastNorthern Ireland 8.3
- 20Birminghamlow-cost sensorsEngland 8.2
- 21Manchesterlow-cost sensorsEngland 8.1
- 22PlymouthEngland 8.0
- 22LutonEngland 8.0
- 24WiganEngland 7.7
- 24Stoke-on-TrentEngland 7.7
- 26HayesEngland 7.6
- 27BexleyEngland 7.5
- 28CannockEngland 7.4
- 28Canvey IslandEngland 7.4
- 30Clacton-on-SeaEngland 7.3
- 31Royal Leamington SpaEngland 7.2
- 32LiverpoolEngland 7.1
- 32DartfordEngland 7.1
- 34WarringtonEngland 6.9
- 34PrestonEngland 6.9
- 34NewmarketEngland 6.9
- 34BrightonEngland 6.9
- 38SpekeEngland 6.8
- 39Cheadle HulmeEngland 6.5
- 40ReadingEngland 6.4
- 40GillinghamEngland 6.4
- 42SouthamptonEngland 6.3
- 43OxfordEngland 6.1
- 44SeafordEngland 6.0
- 44BristolEngland 6.0
- 46PortsmouthEngland 5.9
- 46NewportWales 5.9
- 48DerryNorthern Ireland 5.8
- 48IrlamEngland 5.8
- 48BarnstapleEngland 5.8
- 51GlasgowScotland 5.7
- 52MiddlesbroughEngland 5.6
- 53GrangemouthScotland 5.5
- 54EdinburghScotland 5.4
- 55AndoverEngland 5.3
- 56High PeakEngland 5.1
- 57Briton FerryWales 4.5
- 58SaltashEngland 4.3
- 59PenicuikScotland 3.9
- 59Newton AbbotEngland 3.9
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+