SmogRank / Countries / United Kingdom
Most polluted cities in United Kingdom
4 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: London at 5.9 µg/m³, #898 in the world.
4 good
- 1LondonEngland 5.90.4×
- 2Birminghamlow-cost sensorsEngland 1.70.1×
- 3Manchesterlow-cost sensorsEngland 0.70.0×
- 4Cambridgelow-cost sensorsEngland 0.10.0×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
Estimated: cities without a monitor
United Kingdom cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Glasgow | ≈ 5 µg/m³ |
| Sheffield | ≈ 5 µg/m³ |
| Leeds | ≈ 9 µg/m³ |
| Edinburgh | ≈ 6 µg/m³ |
| Liverpool | ≈ 7 µg/m³ |
| Bristol | ≈ 7 µg/m³ |
| Cardiff | ≈ 5 µg/m³ |
| Leicester | ≈ 7 µg/m³ |
| Bradford | ≈ 6 µg/m³ |
| Belfast | ≈ 5 µg/m³ |
| Coventry | ≈ 7 µg/m³ |
| Birkenhead | ≈ 5 µg/m³ |
| Nottingham | ≈ 5 µg/m³ |
| Islington | ≈ 9 µg/m³ |
| Kingston upon Hull | ≈ 8 µg/m³ |
| Preston | ≈ 7 µg/m³ |
| Swansea | ≈ 5 µg/m³ |
| Newcastle upon Tyne | ≈ 7 µg/m³ |
| Southend-on-Sea | ≈ 8 µg/m³ |
| Derby | ≈ 5 µg/m³ |
| Southampton | ≈ 7 µg/m³ |
| Wolverhampton | ≈ 6 µg/m³ |
| Plymouth | ≈ 7 µg/m³ |
| Stoke-on-Trent | ≈ 6 µg/m³ |
| Milton Keynes | ≈ 6 µg/m³ |
| City of Westminster | ≈ 9 µg/m³ |
| Northampton | ≈ 6 µg/m³ |
| Oldham | ≈ 7 µg/m³ |
| Luton | ≈ 8 µg/m³ |
| Barking | ≈ 9 µg/m³ |
| Archway | ≈ 9 µg/m³ |
| Swindon | ≈ 6 µg/m³ |
| Dudley | ≈ 5 µg/m³ |
| Aberdeen | ≈ 6 µg/m³ |
| Sutton | ≈ 8 µg/m³ |
| St Helens | ≈ 7 µg/m³ |
| Ipswich | ≈ 8 µg/m³ |
| Wigan | ≈ 7 µg/m³ |
| Croydon | ≈ 8 µg/m³ |
| Warrington | ≈ 7 µg/m³ |
Updated 2026-10-01 22:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.