SmogRank / World / United Kingdom / November 2025

Most polluted cities in United Kingdom, November 2025

7 cities in United Kingdom ranked by their average PM2.5 over the 30 days. Worst: London at 7.9 µg/m³, #1,432 of 2,370 cities in the world. Cleanest: Westbury at 4.8. A city needs measurements on 70% of the days to be ranked.

← London 7.9
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
    7.9
  2. 2Manchesterlow-cost sensorsEngland
    7.6
  3. 3Birminghamlow-cost sensorsEngland
    7.2
  4. 4DartfordEngland
    7.0
  5. 5BexleyEngland
    6.8
  6. 6Cambridgelow-cost sensorsEngland
    5.4
  7. 7Westburylow-cost sensorsEngland
    4.8
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

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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