Dangosir y lefelau presennol yn y tabl isod – yn dangos crynodiadau a, lle’n berthnasol, y mynegai a’r bandiau cyfatebol.
Lefelau Presennol
| 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: - |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Anglesey Llynfaes Updated: 26/02/2021 19:00 |
Not measured | Not measured | Not measured | 14 Isel (2) |
25 Isel (2) |
|
Anglesey Penhesgyn 3 Updated: 26/02/2021 19:00 |
Not measured | Not measured | Not measured | 9 Isel (1) |
15 Isel (1) |
|
Aston Hill Updated: 26/02/2021 20:00 |
77 Isel (3) |
No Data | Not measured | Not measured | Not measured |
|
Bridgend Park Street Updated: 26/02/2021 20:00 |
Not measured | 72 Isel (2) |
Not measured | Not measured | 23 Isel (2) |
|
Caerphilly Blackwood High Street Updated: 26/02/2021 19:00 |
Not measured | 69 Isel (2) |
Not measured | Not measured | 14 Isel (1) |
|
Caerphilly Fochriw Updated: 20/02/2021 04:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly Islwyn Road Wattsville Updated: 26/02/2021 18:00 |
Not measured | 66 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 26/02/2021 19:00 |
Not measured | 57 Isel (1) |
Not measured | Not measured | 24 Isel (2) |
|
Cardiff Castle Street Updated: 26/02/2021 20:00 |
Not measured | 51 Isel (1) |
Not measured | 9 Isel (1) |
21 Isel (2) |
|
Cardiff Centre Updated: 26/02/2021 20:00 |
63 Isel (2) |
33 Isel (1) |
2 Isel (1) |
9 Isel (1) |
14 Isel (1) |
|
Cardiff Newport Road Updated: 26/02/2021 20:00 |
Not measured | 52 Isel (1) |
Not measured | Not measured | 23 Isel (2) |
|
Chepstow A48 Updated: 26/02/2021 20:00 |
Not measured | 64 Isel (1) |
Not measured | 12 Isel (2) |
24 Isel (2) |
|
Cimla Road / Victoria Gardens Updated: 26/02/2021 07:00 |
Not measured | 18 Isel (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Crownbridge Updated: 26/02/2021 20:00 |
57 Isel (2) |
53 Isel (1) |
Not measured | Not measured | 21 Isel (2) |
|
Hafod-yr-ynys Roadside Updated: 26/02/2021 20:00 |
Not measured | 69 Isel (2) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 26/02/2021 20:00 |
77 Isel (3) |
No Data | Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 26/02/2021 10:00 |
Not measured | 33 Isel (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 26/02/2021 20:00 |
63 Isel (2) |
6 Isel (1) |
1 Isel (1) |
5 Isel (1) |
11 Isel (1) |
|
Newport M4 Junction 25 Updated: 26/02/2021 21:00 |
22 Isel (1) |
60 Isel (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 26/02/2021 20:00 |
Not measured | 68 Isel (2) |
Not measured | 8 Isel (1) |
15 Isel (1) |
|
Port Talbot Dyffryn School Updated: - |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Port Talbot Little Warren Updated: 26/02/2021 20:00 |
Not measured | Not measured | Not measured | Not measured | 13 Isel (1) |
|
Port Talbot Margam Updated: 26/02/2021 20:00 |
52 Isel (2) |
38 Isel (1) |
1 Isel (1) |
7 Isel (1) |
17 Isel (2) |
|
Port Talbot Prince Street 2 Updated: 26/02/2021 20:00 |
Not measured | Not measured | Not measured | 8 Isel (1) |
20 Isel (2) |
|
Port Talbot Twll-yn-y-Wal Park Updated: 26/02/2021 20:00 |
Not measured | Not measured | Not measured | Not measured | 24 Isel (2) |
|
Rhondda Glyncoch Garth Avenue Updated: 26/02/2021 20:00 |
Not measured | Not measured | Not measured | Not measured | 11 Isel (1) |
|
Rhondda Mountain Ash Updated: 26/02/2021 21:00 |
Not measured | 58 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 26/02/2021 07:00 |
Not measured | 25 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 26/02/2021 18:00 |
Not measured | 33 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 26/02/2021 12:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 22/02/2021 15:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 26/02/2021 12:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 19/02/2021 09:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Port Tennant Roadside Updated: 25/02/2021 15:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Roadside Updated: 26/02/2021 20:00 |
Not measured | 79 Isel (2) |
Not measured | 13 Isel (2) |
27 Isel (2) |
|
Swansea St Thomas DOAS Updated: - |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Station Court High Street Updated: 25/02/2021 15:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Twynyrodyn Updated: - |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Wrexham Updated: 26/02/2021 20:00 |
Not measured | 21 Isel (1) |
5 Isel (1) |
5 Isel (1) |
8 Isel (1) |
|
Wrexham Chirk Updated: 26/02/2021 20:00 |
Not measured | 39 Isel (1) |
Not measured | No Data | No Data |