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: 22/10/2018 17:00 |
Not measured | Not measured | Not measured | No Data | No Data |
|
Anglesey Felin Cafnan Updated: 21/11/2018 17:00 |
Not measured | Not measured | Not measured | 3 Low (1) |
6 Low (1) |
|
Anglesey Llynfaes Updated: 21/11/2018 17:00 |
Not measured | Not measured | Not measured | 3 Low (1) |
5 Low (1) |
|
Anglesey Penhesgyn 3 Updated: 21/11/2018 17:00 |
Not measured | Not measured | Not measured | 2 Low (1) |
4 Low (1) |
|
Aston Hill Updated: 21/11/2018 17:00 |
29 Low (1) |
15 Low (1) |
Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street Updated: 21/11/2018 13:00 |
Not measured | 18 Low (1) |
Not measured | Not measured | 16 Low (1) |
|
Caerphilly Fochriw Updated: 21/11/2018 12:00 |
Not measured | Not measured | Not measured | 9 Low (1) |
12 Low (1) |
|
Caerphilly Islwyn Road Wattsville Updated: 21/11/2018 18:00 |
Not measured | 37 Low (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 21/11/2018 13:00 |
Not measured | 39 Low (1) |
Not measured | Not measured | 18 Low (2) |
|
Cardiff Centre Updated: 21/11/2018 17:00 |
12 Low (1) |
47 Low (1) |
3 Low (1) |
16 Low (2) |
19 Low (2) |
|
Cardiff Newport Road Updated: 21/11/2018 17:00 |
Not measured | 81 Low (2) |
Not measured | Not measured | 23 Low (2) |
|
Chepstow A48 Updated: 21/11/2018 17:00 |
Not measured | 76 Low (2) |
Not measured | 15 Low (2) |
23 Low (2) |
|
Cimla Road / Victoria Gardens Updated: 21/11/2018 07:00 |
Not measured | 35 Low (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Updated: 21/11/2018 17:00 |
18 Low (1) |
41 Low (1) |
Not measured | Not measured | 11 Low (1) |
|
Hafod-yr-ynys Roadside Updated: 21/11/2018 16:00 |
Not measured | 84 Low (2) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 01/11/2018 14:00 |
No Data | No Data | Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 21/11/2018 10:00 |
Not measured | 27 Low (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 21/11/2018 17:00 |
26 Low (1) |
19 Low (1) |
9 Low (1) |
14 Low (2) |
16 Low (1) |
|
Newport M4 Junction 25 Updated: 21/11/2018 18:00 |
11 Low (1) |
37 Low (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 21/11/2018 16:00 |
Not measured | 40 Low (1) |
Not measured | 16 Low (2) |
19 Low (2) |
|
Port Talbot Dyffryn School Updated: 28/06/2017 08:00 |
Not measured | Not measured | Not measured | Not measured | No Data |
|
Port Talbot Little Warren Updated: 21/11/2018 18:00 |
Not measured | Not measured | Not measured | Not measured | 28 Low (2) |
|
Port Talbot Margam Updated: 21/11/2018 17:00 |
31 Low (1) |
17 Low (1) |
1 Low (1) |
14 Low (2) |
17 Low (2) |
|
Port Talbot Prince Street 2 Updated: 21/11/2018 17:00 |
Not measured | Not measured | Not measured | 11 Low (1) |
14 Low (1) |
|
Port Talbot Twll-yn-y-Wal Park Updated: 21/11/2018 18:00 |
Not measured | Not measured | Not measured | Not measured | 14 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: 21/11/2018 13:00 |
Not measured | 43 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 21/11/2018 07:00 |
Not measured | 49 Low (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 21/11/2018 12:00 |
Not measured | 23 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 21/11/2018 15:00 |
22 Low (1) |
17 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 22/05/2018 12:00 |
28 Low (1) |
49 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 21/11/2018 16:00 |
Not measured | 50 Low (1) |
Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 19/11/2018 10:00 |
No Data | No Data | Not measured | No Data | Not measured |
|
Swansea Roadside Updated: 21/11/2018 17:00 |
Not measured | 52 Low (1) |
Not measured | 13 Low (2) |
19 Low (2) |
|
Swansea St Thomas DOAS Updated: 21/11/2018 16:00 |
43 Low (2) |
54 Low (1) |
3 Low (1) |
Not measured | Not measured |
|
Swansea Station Court High Street Updated: 21/11/2018 16:00 |
Not measured | 41 Low (1) |
Not measured | Not measured | Not measured |
|
Twynyrodyn Updated: 05/04/2018 14:00 |
Not measured | Not measured | Not measured | No Data | No Data |
|
V Glamorgan Windsor Road Penarth Updated: 21/11/2018 06:00 |
No Data | 15 Low (1) |
Not measured | Not measured | No Data |
|
Wrexham Updated: 21/11/2018 17:00 |
Not measured | 42 Low (1) |
6 Low (1) |
14 Low (2) |
16 Low (1) |