Monitoring site summary | Air Quality In Wales

This page shows a summary of the active and closed monitoring sites in Wales.

Monitoring site	Band/Index	Last updated
Aston Expressway A494 Deeside	N/A
Aston Hill	LOW (Index 3)	25/03/2025 01:00
Bridgend Park Street	N/A
Caerphilly Blackwood High Street	N/A
Caerphilly Fochriw	N/A
Caerphilly Islwyn Road Wattsville	LOW (Index 1)	24/03/2025 21:00
Caerphilly White Street	LOW (Index 3)	24/03/2025 19:00
Cardiff Castle Street	N/A
Cardiff Centre	N/A
Cardiff Newport Road	LOW (Index 3)	25/03/2025 01:00
Chepstow A48	MODERATE (Index 4)	24/03/2025 24:00
Cimla Road / Victoria Gardens	N/A
Cwmbran Crownbridge	LOW (Index 3)	24/03/2025 22:00
Hafod-yr-ynys Hill Roadside	N/A
Marchlyn Mawr	LOW (Index 1)	24/03/2025 22:00
Nantgarw Road	LOW (Index 1)	24/03/2025 21:00
Narberth	LOW (Index 2)	24/03/2025 24:00
Newport M4 Junction 25	LOW (Index 1)	24/03/2025 23:00
Newport M4 Junction 25 West	N/A
Newport St Julians Comp School	MODERATE (Index 4)	25/03/2025 01:00
Port Talbot Dyffryn School	N/A
Port Talbot Little Warren	LOW (Index 3)	24/03/2025 22:00
Port Talbot M4 Junction 41	N/A
Port Talbot Margam	LOW (Index 3)	25/03/2025 01:00
Port Talbot Prince Street 2	LOW (Index 3)	24/03/2025 22:00
Rhondda Glyncoch Garth Avenue	MODERATE (Index 4)	24/03/2025 23:00
Rhondda Mountain Ash	LOW (Index 1)	24/03/2025 21:00
Rhondda Pontypridd Gelliwastad Rd	LOW (Index 1)	24/03/2025 21:00
Rhondda-Cynon-Taf Broadway	N/A
Rhondda-Cynon-Taf Pontypridd A470	N/A
Swansea Cwm Level Park	N/A
Swansea Hafod DOAS	N/A
Swansea Morfa Road NOX	N/A
Swansea Morriston Roadside	N/A
Swansea Port Tennant Roadside	N/A
Swansea Roadside	LOW (Index 3)	25/03/2025 01:00
Swansea St Thomas DOAS	N/A
Swansea Station Court High Street	N/A
Wrexham	LOW (Index 3)	25/03/2025 01:00
Wrexham A483	N/A
Wrexham Chirk	N/A
Wrexham Chirk Community Hospital	N/A