Crap Towns / Welwyn Garden City / Air quality
How dirty is the air in Welwyn Garden City?
People in Welwyn Garden City breathed an average of 10.2 micrograms of nitrogen dioxide per cubic metre in 2024, 26% higher than the typical town's 8.1, and 7.5 of fine particles (PM2.5), 12% higher than the typical town's 6.7. Both are over the World Health Organization's guidelines of 10 and 5.
| Pollutant | Here | Typical town | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 10.2 | 8.1 | 10 |
| Fine particles (PM2.5) | 7.5 | 6.7 | 5 |
| Town | Distance | Nitrogen dioxide, µg/m³ |
|---|---|---|
| Potters Bar | 11.6 km | 12.3 |
| Hatfield | 5.0 km | 11.8 |
| London Colney | 11.7 km | 11.1 |
| Redbourn | 14.2 km | 10.5 |
| St Albans | 10.3 km | 10.5 |
| Hoddesdon | 13.6 km | 10.2 |
| Welwyn Garden City | – | 10.2 |
| Ware | 11.2 km | 10.0 |
| Stevenage | 11.9 km | 9.4 |
| Harpenden | 10.8 km | 9.4 |
| Hertford | 7.5 km | 9.3 |
| The typical town | – | 8.1 |