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: 26/05/2019 18:00 |
Not measured | Not measured | Not measured | 6 Low (1) |
13 Low (1) |
|
Anglesey Llynfaes Updated: 26/05/2019 18:00 |
Not measured | Not measured | Not measured | 9 Low (1) |
15 Low (1) |
|
Anglesey Penhesgyn 3 Updated: 26/05/2019 18:00 |
Not measured | Not measured | Not measured | 6 Low (1) |
10 Low (1) |
|
Aston Hill Updated: 26/05/2019 24:00 |
68 Low (3) |
1 Low (1) |
Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street Updated: 26/05/2019 22:00 |
Not measured | 25 Low (1) |
Not measured | Not measured | 9 Low (1) |
|
Caerphilly Fochriw Updated: 26/05/2019 19:00 |
Not measured | Not measured | Not measured | 3 Low (1) |
5 Low (1) |
|
Caerphilly Islwyn Road Wattsville Updated: 26/05/2019 20:00 |
Not measured | 16 Low (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 26/05/2019 22:00 |
Not measured | 18 Low (1) |
Not measured | Not measured | 15 Low (1) |
|
Cardiff Centre Updated: 26/05/2019 24:00 |
44 Low (2) |
12 Low (1) |
4 Low (1) |
9 Low (1) |
12 Low (1) |
|
Cardiff Newport Road Updated: 26/05/2019 24:00 |
Not measured | 18 Low (1) |
Not measured | Not measured | 9 Low (1) |
|
Chepstow A48 Updated: 26/05/2019 24:00 |
Not measured | 58 Low (1) |
Not measured | 13 Low (2) |
17 Low (2) |
|
Cimla Road / Victoria Gardens Updated: 26/05/2019 06:00 |
Not measured | 6 Low (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Updated: 26/05/2019 24:00 |
60 Low (2) |
5 Low (1) |
Not measured | Not measured | No Data |
|
Hafod-yr-ynys Roadside Updated: 26/05/2019 24:00 |
Not measured | 36 Low (1) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 25/11/2018 03:00 |
No Data | No Data | Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 26/05/2019 20:00 |
Not measured | 9 Low (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 26/05/2019 24:00 |
36 Low (2) |
4 Low (1) |
No Data | 4 Low (1) |
7 Low (1) |
|
Newport M4 Junction 25 Updated: 26/05/2019 22:00 |
25 Low (1) |
23 Low (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 26/05/2019 23:00 |
Not measured | 13 Low (1) |
Not measured | 7 Low (1) |
13 Low (1) |
|
Port Talbot Dyffryn School Updated: 26/05/2019 21:00 |
Not measured | Not measured | Not measured | Not measured | No Data |
|
Port Talbot Little Warren Updated: 26/05/2019 22:00 |
Not measured | Not measured | Not measured | Not measured | 10 Low (1) |
|
Port Talbot Margam Updated: 26/05/2019 24:00 |
56 Low (2) |
7 Low (1) |
1 Low (1) |
8 Low (1) |
16 Low (1) |
|
Port Talbot Prince Street 2 Updated: 26/05/2019 22:00 |
Not measured | Not measured | Not measured | 17 Low (2) |
42 Low (3) |
|
Port Talbot Twll-yn-y-Wal Park Updated: 26/05/2019 22:00 |
Not measured | Not measured | Not measured | Not measured | 12 Low (1) |
|
Rhondda Glyncoch Garth Avenue Updated: 12/10/2018 01:00 |
Not measured | Not measured | Not measured | Not measured | No Data |
|
Rhondda Mountain Ash Updated: 26/05/2019 20:00 |
Not measured | 31 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 26/05/2019 06:00 |
Not measured | 3 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 26/05/2019 19:00 |
Not measured | 10 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 26/05/2019 21:00 |
58 Low (2) |
6 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 26/05/2019 21:00 |
64 Low (2) |
13 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 26/05/2019 21:00 |
Not measured | 19 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 24/05/2019 14:00 |
No Data | No Data | Not measured | No Data | Not measured |
|
Swansea Roadside Updated: 26/05/2019 24:00 |
Not measured | 18 Low (1) |
Not measured | 12 Low (2) |
12 Low (1) |
|
Swansea St Thomas DOAS Updated: 26/05/2019 21:00 |
68 Low (3) |
25 Low (1) |
1 Low (1) |
Not measured | Not measured |
|
Swansea Station Court High Street Updated: 26/05/2019 21:00 |
Not measured | 41 Low (1) |
Not measured | Not measured | Not measured |
|
Twynyrodyn Updated: 31/03/2019 24:00 |
Not measured | Not measured | Not measured | No Data | No Data |
|
V Glamorgan Windsor Road Penarth Updated: 26/05/2019 05:00 |
No Data | No Data | Not measured | Not measured | 14 Low (1) |
|
Wrexham Updated: 26/05/2019 24:00 |
Not measured | No Data | No Data | 4 Low (1) |
7 Low (1) |