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: 22/02/2020 06:00 |
Not measured | Not measured | Not measured | 34 Low (3) |
52 Moderate (4) |
|
Anglesey Llynfaes Updated: 22/02/2020 06:00 |
Not measured | Not measured | Not measured | 35 Low (3) |
52 Moderate (4) |
|
Anglesey Penhesgyn 3 Updated: 22/02/2020 06:00 |
Not measured | Not measured | Not measured | 28 Low (3) |
40 Low (3) |
|
Aston Hill Updated: 22/02/2020 10:00 |
84 Low (3) |
No Data | Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street Updated: 22/02/2020 08:00 |
Not measured | 5 Low (1) |
Not measured | Not measured | 18 Low (2) |
|
Caerphilly Fochriw Updated: 22/02/2020 10:00 |
Not measured | Not measured | Not measured | 5 Low (1) |
11 Low (1) |
|
Caerphilly Islwyn Road Wattsville Updated: 21/02/2020 15:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 22/02/2020 08:00 |
Not measured | 3 Low (1) |
Not measured | Not measured | 21 Low (2) |
|
Cardiff Centre Updated: 22/02/2020 10:00 |
75 Low (3) |
11 Low (1) |
4 Low (1) |
6 Low (1) |
22 Low (2) |
|
Cardiff Newport Road Updated: 22/02/2020 10:00 |
Not measured | 7 Low (1) |
Not measured | Not measured | 22 Low (2) |
|
Chepstow A48 Updated: 22/02/2020 10:00 |
Not measured | 43 Low (1) |
Not measured | 8 Low (1) |
22 Low (2) |
|
Cimla Road / Victoria Gardens Updated: 22/02/2020 07:00 |
Not measured | 10 Low (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Updated: 22/02/2020 10:00 |
83 Low (3) |
2 Low (1) |
Not measured | Not measured | 21 Low (2) |
|
Hafod-yr-ynys Roadside Updated: 22/02/2020 10:00 |
Not measured | 28 Low (1) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 22/02/2020 10:00 |
56 Low (2) |
2 Low (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 22/02/2020 10:00 |
Not measured | 13 Low (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 22/02/2020 10:00 |
78 Low (3) |
1 Low (1) |
2 Low (1) |
11 Low (1) |
18 Low (2) |
|
Newport M4 Junction 25 Updated: 22/02/2020 11:00 |
68 Low (3) |
20 Low (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 22/02/2020 10:00 |
Not measured | 7 Low (1) |
Not measured | 10 Low (1) |
20 Low (2) |
|
Port Talbot Dyffryn School Updated: 22/02/2020 09:00 |
Not measured | Not measured | Not measured | Not measured | 47 Low (3) |
|
Port Talbot Little Warren Updated: 22/02/2020 10:00 |
Not measured | Not measured | Not measured | Not measured | 29 Low (2) |
|
Port Talbot Margam Updated: 22/02/2020 10:00 |
71 Low (3) |
23 Low (1) |
15 Low (1) |
22 Low (2) |
73 Moderate (6) |
|
Port Talbot Prince Street 2 Updated: 22/02/2020 10:00 |
Not measured | Not measured | Not measured | 13 Low (2) |
42 Low (3) |
|
Port Talbot Twll-yn-y-Wal Park Updated: 22/02/2020 10:00 |
Not measured | Not measured | Not measured | Not measured | 57 Moderate (4) |
|
Rhondda Glyncoch Garth Avenue Updated: 22/02/2020 10:00 |
Not measured | Not measured | Not measured | Not measured | 19 Low (2) |
|
Rhondda Mountain Ash Updated: 21/02/2020 21:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 22/02/2020 07:00 |
Not measured | 4 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 22/02/2020 07:00 |
Not measured | 5 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 21/02/2020 08:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: - |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 21/02/2020 09:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: - |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Port Tennant Roadside Updated: 22/02/2020 08:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Roadside Updated: 22/02/2020 10:00 |
Not measured | 7 Low (1) |
Not measured | 10 Low (1) |
31 Low (2) |
|
Swansea St Thomas DOAS Updated: 22/02/2020 09:00 |
94 Low (3) |
23 Low (1) |
1 Low (1) |
Not measured | Not measured |
|
Swansea Station Court High Street Updated: 22/02/2020 09:00 |
Not measured | 51 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: 22/02/2020 06:00 |
77 Low (3) |
2 Low (1) |
Not measured | Not measured | 24 Low (2) |
|
Wrexham Updated: 22/02/2020 10:00 |
Not measured | 1 Low (1) |
9 Low (1) |
3 Low (1) |
5 Low (1) |