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: 10/12/2019 17:00 |
Not measured | Not measured | Not measured | 12 Low (2) |
21 Low (2) |
|
Anglesey Llynfaes Updated: 10/12/2019 17:00 |
Not measured | Not measured | Not measured | 14 Low (2) |
26 Low (2) |
|
Anglesey Penhesgyn 3 Updated: 10/12/2019 17:00 |
Not measured | Not measured | Not measured | 10 Low (1) |
16 Low (1) |
|
Aston Hill Updated: 10/12/2019 18:00 |
71 Low (3) |
1 Low (1) |
Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street Updated: 10/12/2019 13:00 |
Not measured | 81 Low (2) |
Not measured | Not measured | 19 Low (2) |
|
Caerphilly Fochriw Updated: 06/12/2019 04:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly Islwyn Road Wattsville Updated: 10/12/2019 18:00 |
Not measured | 83 Low (2) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 10/12/2019 08:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Cardiff Centre Updated: 10/12/2019 18:00 |
45 Low (2) |
17 Low (1) |
7 Low (1) |
6 Low (1) |
18 Low (2) |
|
Cardiff Newport Road Updated: 10/12/2019 18:00 |
Not measured | 12 Low (1) |
Not measured | Not measured | 20 Low (2) |
|
Chepstow A48 Updated: 10/12/2019 17:00 |
Not measured | 21 Low (1) |
Not measured | 8 Low (1) |
15 Low (1) |
|
Cimla Road / Victoria Gardens Updated: 10/12/2019 07:00 |
Not measured | 49 Low (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Updated: 10/12/2019 18:00 |
63 Low (2) |
6 Low (1) |
Not measured | Not measured | 20 Low (2) |
|
Hafod-yr-ynys Roadside Updated: 10/12/2019 18:00 |
Not measured | 72 Low (2) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 10/12/2019 18:00 |
68 Low (3) |
1 Low (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 10/12/2019 10:00 |
Not measured | 27 Low (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 10/12/2019 16:00 |
75 Low (3) |
No Data | No Data | 7 Low (1) |
13 Low (1) |
|
Newport M4 Junction 25 Updated: 10/12/2019 19:00 |
40 Low (2) |
27 Low (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 10/12/2019 17:00 |
Not measured | 21 Low (1) |
Not measured | 9 Low (1) |
17 Low (2) |
|
Port Talbot Dyffryn School Updated: 10/12/2019 18:00 |
Not measured | Not measured | Not measured | Not measured | 35 Low (3) |
|
Port Talbot Little Warren Updated: 10/12/2019 18:00 |
Not measured | Not measured | Not measured | Not measured | 18 Low (2) |
|
Port Talbot Margam Updated: 10/12/2019 18:00 |
51 Low (2) |
5 Low (1) |
5 Low (1) |
12 Low (2) |
23 Low (2) |
|
Port Talbot Prince Street 2 Updated: 10/12/2019 18:00 |
Not measured | Not measured | Not measured | 9 Low (1) |
18 Low (2) |
|
Port Talbot Twll-yn-y-Wal Park Updated: 10/12/2019 18:00 |
Not measured | Not measured | Not measured | Not measured | 20 Low (2) |
|
Rhondda Glyncoch Garth Avenue Updated: 10/12/2019 18:00 |
Not measured | Not measured | Not measured | Not measured | 12 Low (1) |
|
Rhondda Mountain Ash Updated: 10/12/2019 19:00 |
Not measured | 49 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 10/12/2019 04:00 |
Not measured | 33 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 10/12/2019 18:00 |
Not measured | 17 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 09/12/2019 22:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 10/12/2019 12:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 10/12/2019 08:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 09/12/2019 10:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Roadside Updated: 10/12/2019 18:00 |
Not measured | 18 Low (1) |
Not measured | 9 Low (1) |
24 Low (2) |
|
Swansea St Thomas DOAS Updated: 26/11/2019 04:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Station Court High Street Updated: 10/12/2019 14:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Twynyrodyn Updated: 02/07/2019 24:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
V Glamorgan Windsor Road Penarth Updated: 10/12/2019 06:00 |
29 Low (1) |
-1 Low (1) |
Not measured | Not measured | 26 Low (2) |
|
Wrexham Updated: 10/12/2019 18:00 |
Not measured | 8 Low (1) |
7 Low (1) |
6 Low (1) |
10 Low (1) |