Crap Towns / Caernarfon / Air quality
How dirty is the air in Caernarfon?
People in Caernarfon breathed an average of 3.5 micrograms of nitrogen dioxide per cubic metre in 2024, 57% lower than the typical town's 8.1, and 4.4 of fine particles (PM2.5), 34% lower than the typical town's 6.7. Both are within the World Health Organization's guidelines of 10 and 5.
| Pollutant | Here | Typical town | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 3.5 | 8.1 | 10 |
| Fine particles (PM2.5) | 4.4 | 6.7 | 5 |
| Town | Distance | Nitrogen dioxide, µg/m³ |
|---|---|---|
| Bangor | 11.6 km | 4.5 |
| Colwyn Bay | 38.5 km | 4.1 |
| Abergele | 47.5 km | 4.0 |
| Rhyl | 55.6 km | 4.0 |
| Caernarfon | – | 3.5 |
| Conwy | 33.3 km | 3.4 |
| Kinmel Bay | 52.4 km | 3.4 |
| Llandudno | 34.8 km | 3.4 |
| Holyhead | 30.9 km | 3.2 |
| Denbigh | 56.8 km | 2.8 |
| Llangefni | 12.8 km | 2.6 |
| The typical town | – | 8.1 |