Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Wales
Air quality index (AQI) and PM2.5 air pollution in Wales
LIVE AQI CITY RANKING
Real-time Wales
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Aberystwyth | 71 |
| 2 | Bridgend | 68 |
| 3 | Carmarthen | 67 |
| 4 | Templeton | 66 |
| 5 | Wrexham | 55 |
| 6 | Chepstow | 53 |
| 7 | Newport | 44 |
| 8 | Port Talbot | 44 |
| 9 | Cardiff | 38 |
| 10 | Fochriw | 33 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
10 Contributors
See all
LIVE AQI CITY RANKING
Real-time Wales
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Chirk | 11 |
| 2 | Caerphilly | 22 |
| 3 | Blackwood | 27 |
| 4 | Pontypridd | 28 |
| 5 | Monmouth | 29 |
| 6 | Dyserth | 31 |
| 7 | Fochriw | 33 |
| 8 | Cardiff | 38 |
| 9 | Newport | 44 |
| 10 | Port Talbot | 44 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
News
The latest air quality news and resources.
Wales air quality data attribution
10Contributors
- Welsh Government
19 stations
- UK Air Quality
1 station
3 Government Contributors
- Milking Solutions
1 station
Corporate Contributor
- Craig YrHesg
2 stations
- controlsjedi
1 station
- DJ
1 station
3 Individual Contributors
3 Anonymous contributors3 stations
3 Anonymous Contributors
Which is the most polluted city in Wales?
- Aberystwyth 71
- Bridgend 68
- Carmarthen 67
- Templeton 66
- Deiniolen 62
- Rhyl 62
- Ruabon 62
- Benllech 61
- Llanerchymedd 61
- Llanfairpwllgwyngyll 61
- Cemaes Bay 60
- Bishops Moat 59
- Crosskeys 56
- Crumlin 56
- Morriston 56
- Mountain Ash 56
- Neath 56
- Penarth 56
- Taibach 56
- Wrexham 55
- Chepstow 53
- Newport 44
- Port Talbot 44
- Cardiff 38
- Swansea 35
- Fochriw 33
- Cwmbran 31
- Dyserth 31
- Monmouth 29
- Landore 28
- Pontypridd 28
- Blackwood 27
- Caerphilly 22
- Chirk 11
AQI US, Metric