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: 25/01/2022 19:00 |
Not measured | Not measured | Not measured | 12 Low (2) |
24 Low (2) |
|
Anglesey Llynfaes Updated: 25/01/2022 19:00 |
Not measured | Not measured | Not measured | 3 Low (1) |
8 Low (1) |
|
Anglesey Penhesgyn 3 Updated: 25/01/2022 19:00 |
Not measured | Not measured | Not measured | 9 Low (1) |
24 Low (2) |
|
Aston Hill Updated: 25/01/2022 19:00 |
45 Low (2) |
5 Low (1) |
Not measured | Not measured | Not measured |
|
Bridgend Park Street Updated: 25/01/2022 20:00 |
Not measured | 52 Low (1) |
Not measured | Not measured | 29 Low (2) |
|
Caerphilly Blackwood High Street Updated: 25/01/2022 19:00 |
Not measured | 58 Low (1) |
Not measured | Not measured | 28 Low (2) |
|
Caerphilly Fochriw Updated: 25/01/2022 01:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly Islwyn Road Wattsville Updated: 25/01/2022 18:00 |
Not measured | 46 Low (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 25/01/2022 19:00 |
Not measured | 71 Low (2) |
Not measured | Not measured | 35 Low (3) |
|
Cardiff Castle Street Updated: 25/01/2022 19:00 |
Not measured | 54 Low (1) |
Not measured | 27 Low (3) |
37 Low (3) |
|
Cardiff Centre Updated: 25/01/2022 19:00 |
23 Low (1) |
37 Low (1) |
3 Low (1) |
28 Low (3) |
30 Low (2) |
|
Cardiff Newport Road Updated: 25/01/2022 19:00 |
Not measured | 44 Low (1) |
Not measured | Not measured | 36 Low (3) |
|
Chepstow A48 Updated: 25/01/2022 19:00 |
Not measured | 57 Low (1) |
Not measured | 26 Low (3) |
34 Low (3) |
|
Cimla Road / Victoria Gardens Updated: 25/01/2022 07:00 |
Not measured | 33 Low (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Crownbridge Updated: 25/01/2022 19:00 |
22 Low (1) |
53 Low (1) |
Not measured | Not measured | 18 Low (2) |
|
Hafod-yr-ynys Roadside Updated: 25/01/2022 19:00 |
Not measured | 57 Low (1) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 25/01/2022 20:00 |
62 Low (2) |
1 Low (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 25/01/2022 10:00 |
Not measured | 44 Low (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 25/01/2022 18:00 |
37 Low (2) |
14 Low (1) |
3 Low (1) |
25 Low (3) |
31 Low (2) |
|
Newport M4 Junction 25 Updated: 25/01/2022 20:00 |
6 Low (1) |
68 Low (2) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 24/01/2022 09:00 |
Not measured | No Data | Not measured | 25 Low (3) |
30 Low (2) |
|
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: 19/01/2022 14:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Port Talbot Margam Updated: 25/01/2022 19:00 |
13 Low (1) |
49 Low (1) |
3 Low (1) |
25 Low (3) |
33 Low (2) |
|
Port Talbot Prince Street 2 Updated: 25/01/2022 19:00 |
Not measured | Not measured | Not measured | 24 Low (3) |
32 Low (2) |
|
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: 25/01/2022 20:00 |
Not measured | Not measured | Not measured | Not measured | 34 Low (3) |
|
Rhondda Mountain Ash Updated: 25/01/2022 13:00 |
Not measured | 69 Low (2) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 25/01/2022 07:00 |
Not measured | 63 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 25/01/2022 20:00 |
Not measured | 48 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 25/01/2022 19:00 |
10 Low (1) |
54 Low (1) |
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: 21/01/2022 09:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 19/11/2021 15:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Port Tennant Roadside Updated: 25/01/2022 19:00 |
Not measured | 58 Low (1) |
Not measured | 27 Low (3) |
Not measured |
|
Swansea Roadside Updated: 25/01/2022 19:00 |
Not measured | 59 Low (1) |
Not measured | 29 Low (3) |
36 Low (3) |
|
Swansea St Thomas DOAS Updated: 25/01/2022 19:00 |
28 Low (1) |
85 Low (2) |
7 Low (1) |
Not measured | Not measured |
|
Swansea Station Court High Street Updated: 21/01/2022 09:00 |
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: 25/01/2022 19:00 |
Not measured | 47 Low (1) |
No Data | 26 Low (3) |
36 Low (3) |
|
Wrexham Chirk Updated: 24/01/2022 09:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Wrexham Chirk Community Hospital Updated: 25/01/2022 20:00 |
Not measured | 38 Low (1) |
Not measured | 7 Low (1) |
13 Low (1) |