SmogRank / Countries / United Kingdom / June 2026

Most polluted cities in United Kingdom, June 2026

7 cities in United Kingdom ranked by their average PM2.5 over the 30 days. Worst: London at 8.2 µg/m³, #650 of 1,918 cities in the world. Cleanest: Cambridge at 2.5. A city needs measurements on 70% of the days to be ranked.

  1. 1LondonEngland
    8.2
  2. 2PortsmouthEngland
    4.8
  3. 2Birminghamlow-cost sensorsEngland
    4.8
  4. 4ReadingEngland
    4.6
  5. 5DartfordEngland
    4.2
  6. 6Manchesterlow-cost sensorsEngland
    2.9
  7. 7Cambridgelow-cost sensorsEngland
    2.5
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, June 2026 · United Kingdom now

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SmogRank, most polluted cities in United Kingdom, PM2.5, June 2026, smogrank.com/gb/history/2026-06 (accessed 2 Oct 2026).

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