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: 22/09/2021 05:00 |
Not measured | Not measured | Not measured | 5 Isel (1) |
43 Isel (3) |
|
Anglesey Llynfaes Updated: 22/09/2021 05:00 |
Not measured | Not measured | Not measured | 6 Isel (1) |
22 Isel (2) |
|
Anglesey Penhesgyn 3 Updated: 22/09/2021 05:00 |
Not measured | Not measured | Not measured | 7 Isel (1) |
14 Isel (1) |
|
Aston Hill Updated: 22/09/2021 07:00 |
58 Isel (2) |
1 Isel (1) |
Not measured | Not measured | Not measured |
|
Bridgend Park Street Updated: 20/09/2021 05:00 |
Not measured | No Data | Not measured | Not measured | 16 Isel (1) |
|
Caerphilly Blackwood High Street Updated: 22/09/2021 07:00 |
Not measured | 17 Isel (1) |
Not measured | Not measured | 16 Isel (1) |
|
Caerphilly Fochriw Updated: 21/09/2021 24:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly Islwyn Road Wattsville Updated: 22/09/2021 05:00 |
Not measured | 10 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street Updated: 22/09/2021 03:00 |
Not measured | 8 Isel (1) |
Not measured | Not measured | 16 Isel (1) |
|
Cardiff Castle Street Updated: 22/09/2021 07:00 |
Not measured | 30 Isel (1) |
Not measured | 7 Isel (1) |
16 Isel (1) |
|
Cardiff Centre Updated: 22/09/2021 07:00 |
5 Isel (1) |
19 Isel (1) |
1 Isel (1) |
8 Isel (1) |
13 Isel (1) |
|
Cardiff Newport Road Updated: 22/09/2021 07:00 |
Not measured | 27 Isel (1) |
Not measured | Not measured | 19 Isel (2) |
|
Chepstow A48 Updated: 22/09/2021 07:00 |
Not measured | 32 Isel (1) |
Not measured | 8 Isel (1) |
11 Isel (1) |
|
Cimla Road / Victoria Gardens Updated: 22/09/2021 06:00 |
Not measured | 22 Isel (1) |
Not measured | Not measured | Not measured |
|
Cwmbran Crownbridge Updated: 22/09/2021 07:00 |
9 Isel (1) |
26 Isel (1) |
Not measured | Not measured | 16 Isel (1) |
|
Hafod-yr-ynys Roadside Updated: 22/09/2021 07:00 |
Not measured | 142 Isel (3) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr Updated: 22/09/2021 07:00 |
59 Isel (2) |
No Data | Not measured | Not measured | Not measured |
|
Nantgarw Road Updated: 16/09/2021 20:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Narberth Updated: 22/09/2021 07:00 |
42 Isel (2) |
3 Isel (1) |
3 Isel (1) |
4 Isel (1) |
7 Isel (1) |
|
Newport M4 Junction 25 Updated: 22/09/2021 07:00 |
2 Isel (1) |
18 Isel (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School Updated: 22/09/2021 07:00 |
Not measured | 27 Isel (1) |
Not measured | 7 Isel (1) |
13 Isel (1) |
|
Port Talbot Dyffryn School Updated: 21/09/2021 13:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Port Talbot Little Warren Updated: 22/09/2021 07:00 |
Not measured | Not measured | Not measured | Not measured | 11 Isel (1) |
|
Port Talbot Margam Updated: 22/09/2021 07:00 |
26 Isel (1) |
24 Isel (1) |
2 Isel (1) |
6 Isel (1) |
20 Isel (2) |
|
Port Talbot Prince Street 2 Updated: 22/07/2021 16:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
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: 22/09/2021 07:00 |
Not measured | Not measured | Not measured | Not measured | 13 Isel (1) |
|
Rhondda Mountain Ash Updated: 22/09/2021 07:00 |
Not measured | 40 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd Updated: 22/09/2021 06:00 |
Not measured | 17 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway Updated: 22/09/2021 06:00 |
Not measured | 15 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park Updated: 21/09/2021 17:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS Updated: 22/09/2021 06:00 |
18 Isel (1) |
27 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX Updated: 21/09/2021 17:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside Updated: 01/07/2021 07:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Port Tennant Roadside Updated: 19/09/2021 16:00 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Roadside Updated: 22/09/2021 07:00 |
Not measured | 25 Isel (1) |
Not measured | 14 Isel (2) |
17 Isel (2) |
|
Swansea St Thomas DOAS Updated: 22/09/2021 06:00 |
14 Isel (1) |
36 Isel (1) |
2 Isel (1) |
Not measured | Not measured |
|
Swansea Station Court High Street Updated: 19/09/2021 16:00 |
Not measured | Not measured | 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: 22/09/2021 07:00 |
Not measured | 28 Isel (1) |
1 Isel (1) |
6 Isel (1) |
10 Isel (1) |
|
Wrexham Chirk Updated: 27/01/2021 01:00 |
Not measured | 18 Isel (1) |
Not measured | 4 Isel (1) |
10 Isel (1) |