SmogRank / Countries / United Kingdom / April 2026

Most polluted cities in United Kingdom, April 2026

7 cities in United Kingdom ranked by their average PM2.5 over the 30 days. Worst: London at 8.7 µg/m³, #925 of 2,283 cities in the world. Cleanest: Cambridge at 4.4. A city needs measurements on 70% of the days to be ranked.

  1. 1LondonEngland
    8.7
  2. 2Manchesterlow-cost sensorsEngland
    6.9
  3. 2DartfordEngland
    6.9
  4. 4Birminghamlow-cost sensorsEngland
    6.6
  5. 5ReadingEngland
    6.5
  6. 6PortsmouthEngland
    6.3
  7. 7Cambridgelow-cost sensorsEngland
    4.4
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, April 2026 · United Kingdom now