Current measured levels are shown in the table below - showing concentrations and, where applicable, the corresponding index and bands.
Current Levels
| Site | 8 Hour mean Ozone µgm-3 |
Hourly mean Nitrogen dioxide µgm-3 |
Max 15 min mean Sulphur dioxide µgm-3 |
Running 24 Hour mean PM2.5 Particles µgm-3 |
Running 24 Hour mean PM10 Particles µgm-3 |
|---|---|---|---|---|---|
|
Anglesey Brynteg Updated: 25/01/2021 24:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Anglesey Llynfaes Updated: - |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Anglesey Penhesgyn 3 Updated: - |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Aston Hill Updated: 27/01/2021 09:00 |
73 Low (3) |
2 Low (1) |
Not measured | Not measured | Not measured |
|
Bridgend Park Street Updated: 27/01/2021 09:00 |
Not measured | 70 Low (2) |
Not measured | Not measured | 9 Low (1) |
|
Caerphilly Blackwood High Street Updated: 27/01/2021 08:00 |
Not measured | 45 Low (1) |
Not measured | Not measured | 11 Low (1) |
|
Caerphilly Fochriw Updated: 25/01/2021 20:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly Islwyn Road Wattsville Updated: 27/01/2021 09:00 |
Not measured | 51 Low (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 27/01/2021 04:00 |
Not measured | 10 Low (1) |
Not measured | Not measured | 16 Low (1) |
|
Cardiff Castle Street Updated: 27/01/2021 10:00 |
Not measured | 59 Low (1) |
Not measured | 6 Low (1) |
10 Low (1) |
|
Cardiff Centre Updated: 27/01/2021 09:00 |
39 Low (2) |
54 Low (1) |
2 Low (1) |
3 Low (1) |
3 Low (1) |
|
Cardiff Newport Road Updated: 27/01/2021 09:00 |
Not measured | 58 Low (1) |
Not measured | Not measured | 9 Low (1) |
|
Chepstow A48 Updated: 27/01/2021 09:00 |
Not measured | 69 Low (2) |
Not measured | 11 Low (1) |
11 Low (1) |
|
Cimla Road / Victoria Gardens Updated: 27/01/2021 07:00 |
Not measured | 50 Low (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Crownbridge Updated: 27/01/2021 09:00 |
35 Low (2) |
38 Low (1) |
Not measured | Not measured | 8 Low (1) |
|
Hafod-yr-ynys Roadside Updated: 27/01/2021 09:00 |
Not measured | 161 Low (3) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 27/01/2021 09:00 |
71 Low (3) |
1 Low (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 27/01/2021 10:00 |
Not measured | 60 Low (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 27/01/2021 09:00 |
59 Low (2) |
3 Low (1) |
4 Low (1) |
1 Low (1) |
3 Low (1) |
|
Newport M4 Junction 25 Updated: 27/01/2021 10:00 |
16 Low (1) |
91 Low (2) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 27/01/2021 09:00 |
Not measured | 46 Low (1) |
Not measured | 6 Low (1) |
7 Low (1) |
|
Port Talbot Dyffryn School Updated: 20/01/2021 22:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Port Talbot Little Warren Updated: 27/01/2021 10:00 |
Not measured | Not measured | Not measured | Not measured | 9 Low (1) |
|
Port Talbot Margam Updated: 27/01/2021 08:00 |
51 Low (2) |
21 Low (1) |
1 Low (1) |
4 Low (1) |
No Data |
|
Port Talbot Prince Street 2 Updated: 27/01/2021 10:00 |
Not measured | Not measured | Not measured | 4 Low (1) |
7 Low (1) |
|
Port Talbot Twll-yn-y-Wal Park Updated: 27/01/2021 10:00 |
Not measured | Not measured | Not measured | Not measured | 7 Low (1) |
|
Rhondda Glyncoch Garth Avenue Updated: 27/01/2021 10:00 |
Not measured | Not measured | Not measured | Not measured | 19 Low (2) |
|
Rhondda Mountain Ash Updated: 27/01/2021 08:00 |
Not measured | 83 Low (2) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 27/01/2021 07:00 |
Not measured | 64 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 27/01/2021 07:00 |
Not measured | 36 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 27/01/2021 09:00 |
No Data | 39 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 27/01/2021 09:00 |
18 Low (1) |
69 Low (2) |
Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 27/01/2021 07:00 |
Not measured | 56 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 21/01/2021 15:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Port Tennant Roadside Updated: 27/01/2021 09:00 |
Not measured | 70 Low (2) |
Not measured | 9 Low (1) |
Not measured |
|
Swansea Roadside Updated: 27/01/2021 07:00 |
Not measured | No Data | Not measured | 11 Low (1) |
10 Low (1) |
|
Swansea St Thomas DOAS Updated: 07/01/2021 04:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Station Court High Street Updated: 27/01/2021 09:00 |
Not measured | 45 Low (1) |
Not measured | Not measured | Not measured |
|
Twynyrodyn Updated: - |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
V Glamorgan Windsor Road Penarth Updated: 03/01/2021 01:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Wrexham Updated: 27/01/2021 09:00 |
Not measured | 64 Low (1) |
7 Low (1) |
7 Low (1) |
9 Low (1) |
|
Wrexham Chirk Updated: 27/01/2021 01:00 |
Not measured | No Data | Not measured | 1 Low (1) |
3 Low (1) |