Air Pollution (NO₂) in WalesLocal Authorities Ranked
All 22 local authorities in Wales, ranked by air pollution (no₂). Data: Department for Environment, Food and Rural Affairs (2024), Open Government Licence v3.0.
Open the interactive map| Rank | Local authority | Air Pollution (NO₂) |
|---|---|---|
| 1 | Cardiff | 11 µg/m³ NO₂ |
| 2 | Newport | 8 µg/m³ NO₂ |
| 3 | Caerphilly | 6 µg/m³ NO₂ |
| 4 | Torfaen | 6 µg/m³ NO₂ |
| 5 | Rhondda Cynon Taf | 5 µg/m³ NO₂ |
| 6 | Vale of Glamorgan | 5 µg/m³ NO₂ |
| 7 | Bridgend | 5 µg/m³ NO₂ |
| 8 | Blaenau Gwent | 5 µg/m³ NO₂ |
| 9 | Merthyr Tydfil | 4 µg/m³ NO₂ |
| 10 | Flintshire | 4 µg/m³ NO₂ |
| 11 | Neath Port Talbot | 4 µg/m³ NO₂ |
| 12 | Swansea | 4 µg/m³ NO₂ |
| 13 | Wrexham | 4 µg/m³ NO₂ |
| 14 | Monmouthshire | 4 µg/m³ NO₂ |
| 15 | Denbighshire | 2 µg/m³ NO₂ |
| 16 | Carmarthenshire | 2 µg/m³ NO₂ |
| 17 | Pembrokeshire | 2 µg/m³ NO₂ |
| 18 | Powys | 2 µg/m³ NO₂ |
| 19 | Isle of Anglesey | 2 µg/m³ NO₂ |
| 20 | Conwy | 2 µg/m³ NO₂ |
| 21 | Ceredigion | 1 µg/m³ NO₂ |
| 22 | Gwynedd | 1 µg/m³ NO₂ |