Air quality in Wales
Air quality index (AQI⁺) and PM2.5 air pollution in Wales • 23:54, Nov 13
Live most polluted city ranking
Real-time Wales most polluted city ranking
Wildfires in Wales
Real-time informationActive fire
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Learn more about global air quality
Which is the most polluted city in Wales?
- Monmouth45
- Cardiff33
- Carmarthen32
- Templeton31
- Crosskeys28
- Cwmbran28
- Port Talbot28
- Blackwood27
- Caerphilly27
- Crumlin27
- Fochriw27
- Penarth27
- Bishops Moat26
- Mountain Ash26
- Rhos on Sea26
- Bridgend25
- Newport25
- Landore23
- Morriston23
- Neath23
- Taibach23
- Cemaes Bay22
- Llanerchymedd22
- Benllech21
- Deiniolen21
- Llanfairpwllgwyngyll21
- Rhyl20
- Chepstow17
- Wrexham16
- Pontypridd14
- Chirk11
- Swansea11
- Dyserth9
- Aberystwyth2
- Ruabon1









