Crap Towns / Chiswell Green / Air quality
How dirty is the air in Chiswell Green?
People in Chiswell Green breathed an average of 10.8 micrograms of nitrogen dioxide per cubic metre in 2024, 33% higher than the typical town's 8.1, and 7.6 of fine particles (PM2.5), 13% 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) | 10.8 | 8.1 | 10 |
| Fine particles (PM2.5) | 7.6 | 6.7 | 5 |
| Town | Distance | Nitrogen dioxide, µg/m³ |
|---|---|---|
| Borehamwood | 8.8 km | 12.2 |
| Watford | 8.9 km | 12.0 |
| Hatfield | 9.8 km | 11.8 |
| Bushey | 7.7 km | 11.7 |
| London Colney | 4.2 km | 11.1 |
| Chiswell Green | – | 10.8 |
| Abbots Langley and Kings Langley | 5.9 km | 10.7 |
| Redbourn | 9.2 km | 10.5 |
| St Albans | 4.4 km | 10.5 |
| Radlett | 4.9 km | 10.3 |
| Hemel Hempstead | 8.2 km | 9.9 |
| The typical town | – | 8.1 |