Dangosir y crynodiadau llygryddion uchaf a fesurwyd yn ystod y 24 awr diwethaf ledled Cymru isod. Mae graffiau cryno yn dangos y saith diwrnod diwethaf ar gael ar gyfer pob llygrydd yng ngholofn chwith y tabl.
Crynodeb 24 Awr
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 |
---|---|---|---|---|---|
Aston Expressway A494 Deeside |
Not measured | 25 Low (1) |
Not measured | Not measured | Not measured |
Aston Hill |
57 Low (2) |
3 Low (1) |
Not measured | Not measured | Not measured |
Bridgend Park Street |
Not measured | Not measured | Not measured | Not measured | Not measured |
Caerphilly Blackwood High Street |
Not measured | 6 Low (1) |
Not measured | Not measured | 12 Low (1) |
Caerphilly Fochriw |
Not measured | Not measured | Not measured | 4 Low (1) |
Not measured |
Caerphilly Islwyn Road Wattsville |
Not measured | 5 Low (1) |
Not measured | Not measured | Not measured |
Caerphilly White Street |
Not measured | Not measured | Not measured | Not measured | 22 Low (2) |
Cardiff Castle Street |
Not measured | 28 Low (1) |
Not measured | Not measured | 20 Low (2) |
Cardiff Centre |
26 Low (1) |
29 Low (1) |
1 Low (1) |
9 Low (1) |
15 Low (1) |
Cardiff Newport Road |
Not measured | 43 Low (1) |
Not measured | Not measured | 19 Low (2) |
Chepstow A48 |
Not measured | 29 Low (1) |
Not measured | 5 Low (1) |
17 Low (2) |
Cimla Road / Victoria Gardens |
Not measured | Not measured | Not measured | Not measured | Not measured |
Cwmbran Crownbridge |
17 Low (1) |
27 Low (1) |
Not measured | Not measured | 17 Low (2) |
Hafod-yr-ynys Hill Roadside |
Not measured | 37 Low (1) |
Not measured | Not measured | Not measured |
Marchlyn Mawr |
Not measured | 2 Low (1) |
Not measured | Not measured | Not measured |
Nantgarw Road |
Not measured | 13 Low (1) |
Not measured | Not measured | Not measured |
Narberth |
67 Low (3) |
3 Low (1) |
3 Low (1) |
4 Low (1) |
10 Low (1) |
Newport M4 Junction 25 |
7 Low (1) |
Not measured | Not measured | Not measured | Not measured |
Newport M4 Junction 25 West |
Not measured | Not measured | Not measured | Not measured | Not measured |
Newport St Julians Comp School |
Not measured | 25 Low (1) |
Not measured | 6 Low (1) |
12 Low (1) |
Port Talbot Dyffryn School |
Not measured | Not measured | Not measured | 6 Low (1) |
12 Low (1) |
Port Talbot Little Warren |
Not measured | Not measured | Not measured | 7 Low (1) |
15 Low (1) |
Port Talbot M4 Junction 41 |
Not measured | 17 Low (1) |
Not measured | Not measured | Not measured |
Port Talbot Margam |
64 Low (2) |
10 Low (1) |
1 Low (1) |
4 Low (1) |
14 Low (1) |
Port Talbot Prince Street 2 |
Not measured | Not measured | Not measured | 6 Low (1) |
12 Low (1) |
Rhondda Glyncoch Garth Avenue |
Not measured | Not measured | Not measured | 10 Low (1) |
51 Moderate (4) |
Rhondda Mountain Ash |
Not measured | 17 Low (1) |
Not measured | Not measured | Not measured |
Rhondda Pontypridd Gelliwastad Rd |
Not measured | Not measured | Not measured | Not measured | Not measured |
Rhondda-Cynon-Taf Broadway |
Not measured | Not measured | Not measured | Not measured | Not measured |
Rhondda-Cynon-Taf Pontypridd A470 |
Not measured | 15 Low (1) |
Not measured | Not measured | Not measured |
Swansea Cwm Level Park |
Not measured | Not measured | Not measured | Not measured | Not measured |
Swansea Hafod DOAS |
53 Low (2) |
47 Low (1) |
Not measured | Not measured | Not measured |
Swansea Morfa Road NOX |
Not measured | Not measured | Not measured | Not measured | Not measured |
Swansea Morriston Roadside |
Not measured | Not measured | Not measured | Not measured | Not measured |
Swansea Port Tennant Roadside |
Not measured | Not measured | Not measured | Not measured | Not measured |
Swansea Roadside |
Not measured | 30 Low (1) |
Not measured | 9 Low (1) |
16 Low (1) |
Swansea St Thomas DOAS |
30 Low (1) |
19 Low (1) |
2 Low (1) |
Not measured | Not measured |
Swansea Station Court High Street |
Not measured | Not measured | Not measured | Not measured | Not measured |
Wrexham |
Not measured | 20 Low (1) |
2 Low (1) |
7 Low (1) |
12 Low (1) |
Wrexham A483 |
Not measured | 26 Low (1) |
Not measured | Not measured | Not measured |
Wrexham Chirk |
Not measured | 14 Low (1) |
Not measured | 3 Low (1) |
17 Low (2) |
Wrexham Chirk Community Hospital |
Not measured | 12 Low (1) |
Not measured | 4 Low (1) |
13 Low (1) |