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 | Bridgend | 45 |
| 2 | Blackwood | 41 |
| 3 | Templeton | 35 |
| 4 | Cardiff | 31 |
| 5 | Caerphilly | 29 |
| 6 | Cwmbran | 29 |
| 7 | Port Talbot | 29 |
| 8 | Newport | 24 |
| 9 | Fochriw | 21 |
| 10 | Monmouth | 19 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
11 Contributors
See all
LIVE AQI CITY RANKING
Real-time Wales
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Aberystwyth | 1 |
| 2 | Carmarthen | 2 |
| 3 | Ruabon | 4 |
| 4 | Chirk | 8 |
| 5 | Dyserth | 8 |
| 6 | Pontypridd | 8 |
| 7 | Wrexham | 12 |
| 8 | Chepstow | 17 |
| 9 | Monmouth | 19 |
| 10 | Fochriw | 21 |
(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
11Contributors
- 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
4 Anonymous contributors4 stations
4 Anonymous Contributors
Which is the most polluted city in Wales?
- Bridgend 45
- Blackwood 41
- Templeton 35
- Cardiff 31
- Caerphilly 29
- Cwmbran 29
- Port Talbot 29
- Newport 24
- Fochriw 21
- Monmouth 19
- Chepstow 17
- Cemaes Bay 15
- Llanerchymedd 13
- Penarth 12
- Wrexham 12
- Benllech 11
- Crosskeys 11
- Crumlin 10
- Landore 10
- Llanfairpwllgwyngyll 10
- Morriston 10
- Mountain Ash 10
- Neath 10
- Swansea 10
- Taibach 10
- Bishops Moat 8
- Chirk 8
- Deiniolen 8
- Dyserth 8
- Pontypridd 8
- Rhyl 7
- Ruabon 4
- Carmarthen 2
- Aberystwyth 1
AQI US, Metric