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: 27/06/2022 24:00 |
Not measured | Not measured | Not measured | 9 Low (1) |
17 Low (2) |
|
Anglesey Llynfaes Updated: 16/03/2022 17:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Anglesey Penhesgyn 3 Updated: 23/06/2022 11:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Aston Hill Updated: 28/06/2022 01:00 |
60 Low (2) |
1 Low (1) |
Not measured | Not measured | Not measured |
|
Bridgend Park Street Updated: 27/06/2022 19:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street Updated: 27/06/2022 22:00 |
Not measured | 17 Low (1) |
Not measured | Not measured | 13 Low (1) |
|
Caerphilly Fochriw Updated: 27/06/2022 23:00 |
Not measured | Not measured | Not measured | 5 Low (1) |
11 Low (1) |
|
Caerphilly Islwyn Road Wattsville Updated: 27/06/2022 20:00 |
Not measured | 16 Low (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 27/06/2022 22:00 |
Not measured | 10 Low (1) |
Not measured | Not measured | 14 Low (1) |
|
Cardiff Castle Street Updated: 27/06/2022 23:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Cardiff Centre Updated: 28/06/2022 01:00 |
49 Low (2) |
3 Low (1) |
2 Low (1) |
9 Low (1) |
12 Low (1) |
|
Cardiff Newport Road Updated: 28/06/2022 01:00 |
Not measured | 4 Low (1) |
Not measured | Not measured | 13 Low (1) |
|
Chepstow A48 Updated: 28/06/2022 01:00 |
Not measured | 4 Low (1) |
Not measured | 7 Low (1) |
No Data |
|
Cimla Road / Victoria Gardens Updated: 18/06/2022 06:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Cwmbran Crownbridge Updated: 27/06/2022 24:00 |
58 Low (2) |
7 Low (1) |
Not measured | Not measured | 13 Low (1) |
|
Hafod-yr-ynys Roadside Updated: 27/06/2022 24:00 |
Not measured | 9 Low (1) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 27/06/2022 24:00 |
61 Low (2) |
No Data | Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 27/06/2022 24:00 |
Not measured | 4 Low (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 28/06/2022 01:00 |
58 Low (2) |
No Data | 1 Low (1) |
5 Low (1) |
10 Low (1) |
|
Newport M4 Junction 25 Updated: 15/06/2022 10:00 |
41 Low (2) |
No Data | Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 28/06/2022 01:00 |
Not measured | 9 Low (1) |
Not measured | 4 Low (1) |
10 Low (1) |
|
Port Talbot Dyffryn School Updated: 26/06/2022 24:00 |
Not measured | Not measured | Not measured | No Data | 24 Low (2) |
|
Port Talbot Little Warren Updated: 27/06/2022 24:00 |
Not measured | Not measured | Not measured | 5 Low (1) |
17 Low (2) |
|
Port Talbot Margam Updated: 28/06/2022 01:00 |
46 Low (2) |
33 Low (1) |
11 Low (1) |
7 Low (1) |
37 Low (3) |
|
Port Talbot Prince Street 2 Updated: 27/06/2022 24:00 |
Not measured | Not measured | Not measured | 9 Low (1) |
36 Low (3) |
|
Port Talbot Twll-yn-y-Wal Park Updated: 18/03/2021 12:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Rhondda Glyncoch Garth Avenue Updated: 27/06/2022 24:00 |
Not measured | Not measured | Not measured | Not measured | 10 Low (1) |
|
Rhondda Mountain Ash Updated: 27/06/2022 12:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 27/06/2022 06:00 |
Not measured | 9 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 27/06/2022 19:00 |
Not measured | 12 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 27/06/2022 21:00 |
62 Low (2) |
No Data | Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 08/01/2022 02:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 23/06/2022 13:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 20/05/2022 05:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Port Tennant Roadside Updated: 27/06/2022 07:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Roadside Updated: 28/06/2022 01:00 |
Not measured | 1 Low (1) |
Not measured | 6 Low (1) |
14 Low (1) |
|
Swansea St Thomas DOAS Updated: 27/06/2022 23:00 |
49 Low (2) |
10 Low (1) |
1 Low (1) |
Not measured | Not measured |
|
Swansea Station Court High Street Updated: 17/06/2022 24:00 |
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 |
|
Wrexham Updated: 27/06/2022 24:00 |
Not measured | 2 Low (1) |
2 Low (1) |
3 Low (1) |
6 Low (1) |
|
Wrexham Chirk Updated: 27/06/2022 24:00 |
Not measured | 4 Low (1) |
Not measured | 3 Low (1) |
12 Low (1) |
|
Wrexham Chirk Community Hospital Updated: 27/06/2022 24:00 |
Not measured | 6 Low (1) |
Not measured | 5 Low (1) |
12 Low (1) |