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: 10/08/2022 18:00 |
Not measured | Not measured | Not measured | 4 Low (1) |
10 Low (1) |
|
Anglesey Llynfaes Updated: 15/01/2022 24:00 |
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: 10/08/2022 20:00 |
138 Moderate (5) |
4 Low (1) |
Not measured | Not measured | Not measured |
|
Bridgend Park Street Updated: 10/08/2022 19:00 |
Not measured | 69 Low (2) |
Not measured | Not measured | 20 Low (2) |
|
Caerphilly Blackwood High Street Updated: 10/08/2022 18:00 |
Not measured | 17 Low (1) |
Not measured | Not measured | 14 Low (1) |
|
Caerphilly Fochriw Updated: 10/08/2022 19:00 |
Not measured | Not measured | Not measured | 6 Low (1) |
16 Low (1) |
|
Caerphilly Islwyn Road Wattsville Updated: 10/08/2022 20:00 |
Not measured | 31 Low (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 02/08/2022 07:00 |
Not measured | No Data | Not measured | Not measured | 20 Low (2) |
|
Cardiff Castle Street Updated: 10/08/2022 20:00 |
Not measured | 81 Low (2) |
Not measured | 11 Low (1) |
31 Low (2) |
|
Cardiff Centre Updated: 10/08/2022 20:00 |
122 Moderate (5) |
16 Low (1) |
6 Low (1) |
11 Low (1) |
20 Low (2) |
|
Cardiff Newport Road Updated: 07/08/2022 10:00 |
Not measured | 58 Low (1) |
Not measured | Not measured | 22 Low (2) |
|
Chepstow A48 Updated: 10/08/2022 20:00 |
Not measured | 30 Low (1) |
Not measured | 13 Low (2) |
18 Low (2) |
|
Cimla Road / Victoria Gardens Updated: 10/08/2022 06:00 |
Not measured | 17 Low (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Crownbridge Updated: 10/08/2022 20:00 |
82 Low (3) |
10 Low (1) |
Not measured | Not measured | 23 Low (2) |
|
Hafod-yr-ynys Roadside Updated: 10/08/2022 20:00 |
Not measured | 61 Low (1) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 10/08/2022 20:00 |
111 Moderate (4) |
2 Low (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 10/08/2022 20:00 |
Not measured | 31 Low (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 10/08/2022 20:00 |
108 Moderate (4) |
4 Low (1) |
3 Low (1) |
6 Low (1) |
13 Low (1) |
|
Newport M4 Junction 25 Updated: 03/06/2022 24:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 10/08/2022 20:00 |
Not measured | 32 Low (1) |
Not measured | 5 Low (1) |
14 Low (1) |
|
Port Talbot Dyffryn School Updated: 10/08/2022 20:00 |
Not measured | Not measured | Not measured | 12 Low (2) |
42 Low (3) |
|
Port Talbot Little Warren Updated: 10/08/2022 20:00 |
Not measured | Not measured | Not measured | 8 Low (1) |
19 Low (2) |
|
Port Talbot Margam Updated: 10/08/2022 19:00 |
106 Moderate (4) |
17 Low (1) |
2 Low (1) |
11 Low (1) |
41 Low (3) |
|
Port Talbot Prince Street 2 Updated: 10/08/2022 20:00 |
Not measured | Not measured | Not measured | 9 Low (1) |
40 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: 10/08/2022 20:00 |
Not measured | Not measured | Not measured | Not measured | 20 Low (2) |
|
Rhondda Mountain Ash Updated: 10/08/2022 20:00 |
Not measured | 61 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 10/08/2022 06:00 |
Not measured | 21 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 10/08/2022 19:00 |
Not measured | 9 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 10/08/2022 11:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 10/08/2022 12:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 08/08/2022 18:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 01/07/2022 13:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Port Tennant Roadside Updated: 10/08/2022 13:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Roadside Updated: 29/07/2022 02:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea St Thomas DOAS Updated: 10/08/2022 12:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Station Court High Street Updated: 11/07/2022 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: 10/08/2022 20:00 |
Not measured | 20 Low (1) |
6 Low (1) |
5 Low (1) |
12 Low (1) |
|
Wrexham Chirk Updated: 10/08/2022 20:00 |
Not measured | 5 Low (1) |
Not measured | 3 Low (1) |
11 Low (1) |
|
Wrexham Chirk Community Hospital Updated: 10/08/2022 20:00 |
Not measured | 3 Low (1) |
Not measured | 3 Low (1) |
11 Low (1) |