Crap Towns / Hemel Hempstead / Air quality
How dirty is the air in Hemel Hempstead?
People in Hemel Hempstead breathed an average of 9.9 micrograms of nitrogen dioxide per cubic metre in 2024, 22% 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. The fine particles are over the World Health Organization's guideline of 5; the nitrogen dioxide is within its 10.
| Pollutant | Here | Typical town | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 9.9 | 8.1 | 10 |
| Fine particles (PM2.5) | 7.5 | 6.7 | 5 |
| Town | Distance | Nitrogen dioxide, µg/m³ |
|---|---|---|
| Chiswell Green | 8.2 km | 10.8 |
| Abbots Langley and Kings Langley | 5.2 km | 10.7 |
| Redbourn | 7.0 km | 10.5 |
| St Albans | 9.9 km | 10.5 |
| Chorleywood | 11.6 km | 10.2 |
| Hemel Hempstead | – | 9.9 |
| Harpenden | 10.7 km | 9.4 |
| Berkhamsted | 7.6 km | 8.6 |
| Little Chalfont | 11.8 km | 8.4 |
| Chesham | 10.9 km | 7.8 |
| Bovingdon | 5.8 km | 7.7 |
| The typical town | – | 8.1 |