SmogRank / Countries / United Kingdom / July 2026

Most polluted cities in United Kingdom, July 2026

6 cities in United Kingdom ranked by their average PM2.5 over the 31 days. Worst: Manchester at 16.1 µg/m³, #349 of 2,262 cities in the world. Cleanest: Cambridge at 4.9. A city needs measurements on 70% of the days to be ranked.

  1. 1Manchesterlow-cost sensorsEngland
    16.1
  2. 2Birminghamlow-cost sensorsEngland
    9.0
  3. 3LondonEngland
    8.7
  4. 4ReadingEngland
    6.3
  5. 5PortsmouthEngland
    5.9
  6. 6Cambridgelow-cost sensorsEngland
    4.9
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, July 2026 · United Kingdom now