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: 03/01/2023 17:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Anglesey Llynfaes Updated: 15/01/2022 24:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Anglesey Penhesgyn 3 Updated: 03/04/2022 24:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Aston Hill Updated: 03/02/2023 09:00 |
57 Isel (2) |
1 Isel (1) |
Not measured | Not measured | Not measured |
|
Bridgend Park Street Updated: 03/02/2023 08:00 |
Not measured | 29 Isel (1) |
Not measured | Not measured | 17 Isel (2) |
|
Caerphilly Blackwood High Street Updated: 03/02/2023 08:00 |
Not measured | 23 Isel (1) |
Not measured | Not measured | No Data |
|
Caerphilly Fochriw Updated: 03/02/2023 08:00 |
Not measured | Not measured | Not measured | 2 Isel (1) |
5 Isel (1) |
|
Caerphilly Islwyn Road Wattsville Updated: 03/02/2023 09:00 |
Not measured | 39 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 03/02/2023 08:00 |
Not measured | 24 Isel (1) |
Not measured | Not measured | 13 Isel (1) |
|
Cardiff Castle Street Updated: 03/02/2023 09:00 |
Not measured | 33 Isel (1) |
Not measured | 4 Isel (1) |
10 Isel (1) |
|
Cardiff Centre Updated: 02/02/2023 07:00 |
72 Isel (3) |
No Data | 2 Isel (1) |
4 Isel (1) |
11 Isel (1) |
|
Cardiff Newport Road Updated: 03/02/2023 09:00 |
Not measured | 16 Isel (1) |
Not measured | Not measured | 10 Isel (1) |
|
Chepstow A48 Updated: 03/02/2023 09:00 |
Not measured | 76 Isel (2) |
Not measured | 7 Isel (1) |
13 Isel (1) |
|
Cimla Road / Victoria Gardens Updated: 03/02/2023 09:00 |
Not measured | 50 Isel (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Crownbridge Updated: 03/02/2023 09:00 |
73 Isel (3) |
4 Isel (1) |
Not measured | Not measured | 6 Isel (1) |
|
Hafod-yr-ynys Roadside Updated: 01/02/2023 04:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 03/02/2023 09:00 |
68 Isel (3) |
1 Isel (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 03/02/2023 05:00 |
Not measured | 4 Isel (1) |
Not measured | Not measured | Not measured |
|
Narberth Updated: 03/02/2023 09:00 |
75 Isel (3) |
2 Isel (1) |
No Data | 4 Isel (1) |
8 Isel (1) |
|
Newport M4 Junction 25 Updated: 03/02/2023 09:00 |
43 Isel (2) |
66 Isel (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 03/02/2023 09:00 |
Not measured | 40 Isel (1) |
Not measured | 5 Isel (1) |
7 Isel (1) |
|
Port Talbot Dyffryn School Updated: 03/02/2023 09:00 |
Not measured | Not measured | Not measured | 6 Isel (1) |
19 Isel (2) |
|
Port Talbot Little Warren Updated: 03/02/2023 09:00 |
Not measured | Not measured | Not measured | 5 Isel (1) |
17 Isel (2) |
|
Port Talbot Margam Updated: 03/02/2023 09:00 |
75 Isel (3) |
11 Isel (1) |
No Data | 5 Isel (1) |
21 Isel (2) |
|
Port Talbot Prince Street 2 Updated: 03/02/2023 09:00 |
Not measured | Not measured | Not measured | 12 Isel (2) |
46 Isel (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: 28/01/2023 01:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Rhondda Mountain Ash Updated: 03/02/2023 08:00 |
Not measured | 54 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 03/02/2023 07:00 |
Not measured | 55 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 03/02/2023 07:00 |
Not measured | 29 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 01/02/2023 21:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 03/02/2023 08:00 |
82 Isel (3) |
26 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 01/02/2023 22:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 03/01/2023 12:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Port Tennant Roadside Updated: 02/02/2023 14:00 |
Not measured | 22 Isel (1) |
Not measured | No Data | Not measured |
|
Swansea Roadside Updated: 03/02/2023 09:00 |
Not measured | 25 Isel (1) |
Not measured | 5 Isel (1) |
12 Isel (1) |
|
Swansea St Thomas DOAS Updated: 03/02/2023 08:00 |
70 Isel (3) |
15 Isel (1) |
1 Isel (1) |
Not measured | Not measured |
|
Swansea Station Court High Street Updated: 02/02/2023 15:00 |
Not measured | 60 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 |
|
Wrexham Updated: 03/02/2023 09:00 |
Not measured | 21 Isel (1) |
No Data | 2 Isel (1) |
5 Isel (1) |
|
Wrexham Chirk Updated: 03/02/2023 09:00 |
Not measured | 14 Isel (1) |
Not measured | 3 Isel (1) |
7 Isel (1) |
|
Wrexham Chirk Community Hospital Updated: 03/02/2023 09:00 |
Not measured | 26 Isel (1) |
Not measured | 3 Isel (1) |
4 Isel (1) |