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: 19/08/2019 24:00 |
Not measured | Not measured | Not measured | 9 Isel (1) |
21 Isel (2) |
|
Anglesey Llynfaes Updated: 19/08/2019 24:00 |
Not measured | Not measured | Not measured | 9 Isel (1) |
17 Isel (2) |
|
Anglesey Penhesgyn 3 Updated: 19/08/2019 24:00 |
Not measured | Not measured | Not measured | 10 Isel (1) |
17 Isel (2) |
|
Aston Hill Updated: 30/07/2019 09:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street Updated: 20/08/2019 03:00 |
Not measured | 4 Isel (1) |
Not measured | Not measured | 10 Isel (1) |
|
Caerphilly Fochriw Updated: 20/08/2019 03:00 |
Not measured | Not measured | Not measured | 4 Isel (1) |
9 Isel (1) |
|
Caerphilly Islwyn Road Wattsville Updated: 20/08/2019 03:00 |
Not measured | 5 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 20/08/2019 03:00 |
Not measured | 3 Isel (1) |
Not measured | Not measured | 12 Isel (1) |
|
Cardiff Centre Updated: 20/08/2019 04:00 |
46 Isel (2) |
17 Isel (1) |
1 Isel (1) |
6 Isel (1) |
16 Isel (1) |
|
Cardiff Newport Road Updated: 20/08/2019 04:00 |
Not measured | 7 Isel (1) |
Not measured | Not measured | 11 Isel (1) |
|
Chepstow A48 Updated: 20/08/2019 04:00 |
Not measured | 21 Isel (1) |
Not measured | 10 Isel (1) |
No Data |
|
Cimla Road / Victoria Gardens Updated: 20/08/2019 03:00 |
Not measured | 10 Isel (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Updated: 20/08/2019 04:00 |
50 Isel (2) |
4 Isel (1) |
Not measured | Not measured | No Data |
|
Hafod-yr-ynys Roadside Updated: 20/08/2019 04:00 |
Not measured | 36 Isel (1) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 20/08/2019 02:00 |
No Data | 2 Isel (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 20/08/2019 04:00 |
Not measured | 11 Isel (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 20/08/2019 04:00 |
33 Isel (1) |
No Data | 2 Isel (1) |
5 Isel (1) |
10 Isel (1) |
|
Newport M4 Junction 25 Updated: 20/08/2019 04:00 |
15 Isel (1) |
54 Isel (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 20/08/2019 03:00 |
Not measured | 23 Isel (1) |
Not measured | 5 Isel (1) |
11 Isel (1) |
|
Port Talbot Dyffryn School Updated: 20/08/2019 03:00 |
Not measured | Not measured | Not measured | Not measured | 17 Isel (2) |
|
Port Talbot Little Warren Updated: 20/08/2019 04:00 |
Not measured | Not measured | Not measured | Not measured | 14 Isel (1) |
|
Port Talbot Margam Updated: 20/08/2019 04:00 |
61 Isel (2) |
4 Isel (1) |
1 Isel (1) |
7 Isel (1) |
21 Isel (2) |
|
Port Talbot Prince Street 2 Updated: 20/08/2019 04:00 |
Not measured | Not measured | Not measured | 7 Isel (1) |
34 Isel (3) |
|
Port Talbot Twll-yn-y-Wal Park Updated: 20/08/2019 04:00 |
Not measured | Not measured | Not measured | Not measured | 25 Isel (2) |
|
Rhondda Glyncoch Garth Avenue Updated: 20/08/2019 04:00 |
Not measured | Not measured | Not measured | Not measured | 11 Isel (1) |
|
Rhondda Mountain Ash Updated: 20/08/2019 04:00 |
Not measured | 15 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 20/08/2019 03:00 |
Not measured | 3 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 19/08/2019 03:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 20/08/2019 02:00 |
55 Isel (2) |
1 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 07/08/2019 18:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 17/08/2019 24:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 14/08/2019 12:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Roadside Updated: 20/08/2019 04:00 |
Not measured | 8 Isel (1) |
Not measured | 4 Isel (1) |
17 Isel (2) |
|
Swansea St Thomas DOAS Updated: 20/08/2019 03:00 |
57 Isel (2) |
50 Isel (1) |
2 Isel (1) |
Not measured | Not measured |
|
Swansea Station Court High Street Updated: 20/08/2019 03:00 |
Not measured | 9 Isel (1) |
Not measured | Not measured | Not measured |
|
Twynyrodyn Updated: 02/07/2019 24:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
V Glamorgan Windsor Road Penarth Updated: 19/08/2019 24:00 |
44 Isel (2) |
4 Isel (1) |
Not measured | Not measured | 22 Isel (2) |
|
Wrexham Updated: 20/08/2019 04:00 |
Not measured | 3 Isel (1) |
1 Isel (1) |
4 Isel (1) |
9 Isel (1) |