SmogRank / World / United Kingdom / November 2025

Most polluted cities in United Kingdom, November 2025

9 cities in United Kingdom ranked by their average PM2.5 over the 30 days. Worst: London at 8.0 µg/m³, #1,189 of 2,157 cities in the world. Cleanest: Westbury at 4.8. A city needs measurements on 70% of the days to be ranked.

← London 8.0
Every city in United Kingdom ranked for November 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1LondonEngland
    44
  2. 2Manchesterlow-cost sensorsEngland
    42
  3. 3DartfordEngland
    39
  4. 4BexleyEngland
    38
  5. 5Birminghamlow-cost sensorsEngland
    37
  6. 6PortsmouthEngland
    33
  7. 7ReadingEngland
    33
  8. 8Cambridgelow-cost sensorsEngland
    30
  9. 9Westburylow-cost sensorsEngland
    27
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

All cities in the world, November 2025 · United Kingdom now

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SmogRank, most polluted cities in United Kingdom, PM2.5, November 2025, smogrank.com/gb/history/2025-11 (accessed 2 Oct 2026).

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