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 |
|---|---|---|---|---|---|
|
Anglesey Brynteg |
Not measured | Not measured | Not measured | 5 Isel (1) |
43 Isel (3) |
|
Anglesey Llynfaes |
Not measured | Not measured | Not measured | 6 Isel (1) |
22 Isel (2) |
|
Anglesey Penhesgyn 3 |
Not measured | Not measured | Not measured | 7 Isel (1) |
15 Isel (1) |
|
Aston Hill |
61 Isel (2) |
2 Isel (1) |
Not measured | Not measured | Not measured |
|
Bridgend Park Street |
Not measured | No Data | Not measured | Not measured | 16 Isel (1) |
|
Caerphilly Blackwood High Street |
Not measured | 48 Isel (1) |
Not measured | Not measured | 16 Isel (1) |
|
Caerphilly Fochriw |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly Islwyn Road Wattsville |
Not measured | 46 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street |
Not measured | 54 Isel (1) |
Not measured | Not measured | 16 Isel (1) |
|
Cardiff Castle Street |
Not measured | 44 Isel (1) |
Not measured | 6 Isel (1) |
16 Isel (1) |
|
Cardiff Centre |
50 Isel (2) |
26 Isel (1) |
4 Isel (1) |
8 Isel (1) |
13 Isel (1) |
|
Cardiff Newport Road |
Not measured | 45 Isel (1) |
Not measured | Not measured | 20 Isel (2) |
|
Chepstow A48 |
Not measured | 71 Isel (2) |
Not measured | 8 Isel (1) |
11 Isel (1) |
|
Cimla Road / Victoria Gardens |
Not measured | 89 Isel (2) |
Not measured | Not measured | Not measured |
|
Cwmbran Crownbridge |
52 Isel (2) |
25 Isel (1) |
Not measured | Not measured | 16 Isel (1) |
|
Hafod-yr-ynys Roadside |
Not measured | 132 Isel (2) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr |
68 Isel (3) |
2 Isel (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Narberth |
53 Isel (2) |
7 Isel (1) |
3 Isel (1) |
4 Isel (1) |
7 Isel (1) |
|
Newport M4 Junction 25 |
25 Isel (1) |
71 Isel (2) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School |
Not measured | 39 Isel (1) |
Not measured | 7 Isel (1) |
13 Isel (1) |
|
Port Talbot Dyffryn School |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Port Talbot Little Warren |
Not measured | Not measured | Not measured | Not measured | 11 Isel (1) |
|
Port Talbot Margam |
55 Isel (2) |
29 Isel (1) |
3 Isel (1) |
7 Isel (1) |
21 Isel (2) |
|
Port Talbot Prince Street 2 |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Port Talbot Twll-yn-y-Wal Park |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Rhondda Glyncoch Garth Avenue |
Not measured | Not measured | Not measured | Not measured | 13 Isel (1) |
|
Rhondda Mountain Ash |
Not measured | 67 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd |
Not measured | 54 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway |
Not measured | 39 Isel (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 Isel (2) |
72 Isel (2) |
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 | 39 Isel (1) |
Not measured | 14 Isel (2) |
16 Isel (1) |
|
Swansea St Thomas DOAS |
52 Isel (2) |
50 Isel (1) |
4 Isel (1) |
Not measured | Not measured |
|
Swansea Station Court High Street |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Twynyrodyn |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Wrexham |
Not measured | 41 Isel (1) |
1 Isel (1) |
6 Isel (1) |
10 Isel (1) |
|
Wrexham Chirk |
Not measured | 41 Isel (1) |
Not measured | 4 Isel (1) |
10 Isel (1) |