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: 24/09/2018 10:00 |
No data | No data | No data | 3 Low (1) |
6 Low (1) |
|
Anglesey Felin Cafnan Updated: 24/09/2018 10:00 |
No data | No data | No data | 8 Low (1) |
23 Low (2) |
|
Anglesey Llynfaes Updated: 24/09/2018 10:00 |
No data | No data | No data | 5 Low (1) |
10 Low (1) |
|
Anglesey Penhesgyn 3 Updated: 24/09/2018 10:00 |
No data | No data | No data | 5 Low (1) |
16 Low (1) |
|
Aston Hill Updated: 24/09/2018 14:00 |
67 Low (3) |
1 Low (1) |
No data | No data | No data |
|
Caerphilly Blackwood High Street Updated: 24/09/2018 12:00 |
No data | 25 Low (1) |
No data | No data | 9 Low (1) |
|
Caerphilly Fochriw Updated: 24/09/2018 11:00 |
No data | No data | No data | 4 Low (1) |
7 Low (1) |
|
Caerphilly Islwyn Road Wattsville Updated: 24/09/2018 14:00 |
No data | 28 Low (1) |
No data | No data | No data |
|
Caerphilly White Street Updated: 24/09/2018 12:00 |
No data | 66 Low (1) |
No data | No data | 13 Low (1) |
|
Cardiff Centre Updated: 21/09/2018 07:00 |
No data | No data | 2 Low (1) |
4 Low (1) |
15 Low (1) |
|
Cardiff Newport Road Updated: 24/09/2018 14:00 |
No data | 30 Low (1) |
No data | No data | 13 Low (1) |
|
Chepstow A48 Updated: 24/09/2018 14:00 |
No data | 35 Low (1) |
No data | 9 Low (1) |
13 Low (1) |
|
Cimla Road / Victoria Gardens Updated: 24/09/2018 06:00 |
No data | 24 Low (1) |
No data | No data | No data |
|
Cwmbran Updated: 24/09/2018 14:00 |
42 Low (2) |
5 Low (1) |
No data | No data | 13 Low (1) |
|
Hafod-yr-ynys Roadside Updated: 24/09/2018 14:00 |
No data | 56 Low (1) |
No data | No data | No data |
|
Marchlyn Mawr Updated: 05/09/2018 12:00 |
No data | No data | No data | No data | No data |
|
Nantgarw Road Updated: 24/09/2018 09:00 |
No data | 28 Low (1) |
No data | No data | No data |
|
Narberth Updated: 24/09/2018 14:00 |
62 Low (2) |
1 Low (1) |
3 Low (1) |
3 Low (1) |
8 Low (1) |
|
Newport M4 Junction 25 Updated: 24/09/2018 15:00 |
24 Low (1) |
35 Low (1) |
No data | No data | No data |
|
Newport St Julians Comp School Updated: 24/09/2018 13:00 |
No data | 13 Low (1) |
No data | 4 Low (1) |
8 Low (1) |
|
Port Talbot Dyffryn School Updated: 28/06/2017 08:00 |
No data | No data | No data | No data | No data |
|
Port Talbot Little Warren Updated: 24/09/2018 14:00 |
No data | No data | No data | No data | 9 Low (1) |
|
Port Talbot Margam Updated: 24/09/2018 14:00 |
52 Low (2) |
4 Low (1) |
1 Low (1) |
5 Low (1) |
9 Low (1) |
|
Port Talbot Prince Street 2 Updated: 24/09/2018 14:00 |
No data | No data | No data | 3 Low (1) |
8 Low (1) |
|
Port Talbot Twll-yn-y-Wal Park Updated: 24/09/2018 14:00 |
No data | No data | No data | No data | 8 Low (1) |
|
Rhondda Glyncoch Garth Avenue Updated: 24/09/2018 14:00 |
No data | No data | No data | No data | No data |
|
Rhondda Mountain Ash Updated: 24/09/2018 14:00 |
No data | 47 Low (1) |
No data | No data | No data |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 24/09/2018 06:00 |
No data | 38 Low (1) |
No data | No data | No data |
|
Rhondda-Cynon-Taf Broadway Updated: 24/09/2018 11:00 |
No data | 20 Low (1) |
No data | No data | No data |
|
Swansea Cwm Level Park Updated: 24/09/2018 12:00 |
28 Low (1) |
2 Low (1) |
No data | No data | No data |
|
Swansea Hafod DOAS Updated: 22/05/2018 12:00 |
45 Low (2) |
23 Low (1) |
No data | No data | No data |
|
Swansea Morfa Road NOX Updated: 24/09/2018 13:00 |
No data | 4 Low (1) |
No data | No data | No data |
|
Swansea Morriston Roadside Updated: 14/09/2018 07:00 |
No data | No data | No data | No data | No data |
|
Swansea Roadside Updated: 24/09/2018 14:00 |
No data | 11 Low (1) |
No data | 10 Low (1) |
10 Low (1) |
|
Swansea St Thomas DOAS Updated: 18/09/2018 09:00 |
No data | No data | No data | No data | No data |
|
Swansea Station Court High Street Updated: 24/09/2018 14:00 |
No data | 22 Low (1) |
No data | No data | No data |
|
Twynyrodyn Updated: 05/04/2018 14:00 |
No data | No data | No data | No data | No data |
|
V Glamorgan Windsor Road Penarth Updated: 24/09/2018 05:00 |
27 Low (1) |
15 Low (1) |
No data | No data | 11 Low (1) |
|
Wrexham Updated: 24/09/2018 14:00 |
No data | 10 Low (1) |
1 Low (1) |
No data | No data |