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 | 6 Isel (1) |
16 Isel (1) |
|
Anglesey Llynfaes |
Not measured | Not measured | Not measured | 7 Isel (1) |
36 Isel (3) |
|
Anglesey Penhesgyn 3 |
Not measured | Not measured | Not measured | 10 Isel (1) |
21 Isel (2) |
|
Aston Hill |
60 Isel (2) |
8 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street |
Not measured | 47 Isel (1) |
Not measured | Not measured | 18 Isel (2) |
|
Caerphilly Fochriw |
Not measured | Not measured | Not measured | 5 Isel (1) |
7 Isel (1) |
|
Caerphilly Islwyn Road Wattsville |
Not measured | 47 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street |
Not measured | 82 Isel (2) |
Not measured | Not measured | 20 Isel (2) |
|
Cardiff Centre |
42 Isel (2) |
48 Isel (1) |
2 Isel (1) |
20 Isel (2) |
23 Isel (2) |
|
Cardiff Newport Road |
Not measured | 78 Isel (2) |
Not measured | Not measured | 26 Isel (2) |
|
Chepstow A48 |
Not measured | 57 Isel (1) |
Not measured | 19 Isel (2) |
21 Isel (2) |
|
Cimla Road / Victoria Gardens |
Not measured | 78 Isel (2) |
Not measured | Not measured | Not measured |
|
Cwmbran |
39 Isel (2) |
23 Isel (1) |
Not measured | Not measured | 16 Isel (1) |
|
Hafod-yr-ynys Roadside |
Not measured | 133 Isel (2) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr |
74 Isel (3) |
3 Isel (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road |
Not measured | 58 Isel (1) |
Not measured | Not measured | Not measured |
|
Narberth |
35 Isel (2) |
11 Isel (1) |
5 Isel (1) |
8 Isel (1) |
10 Isel (1) |
|
Newport M4 Junction 25 |
23 Isel (1) |
50 Isel (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School |
Not measured | 69 Isel (2) |
Not measured | 15 Isel (2) |
19 Isel (2) |
|
Port Talbot Dyffryn School |
Not measured | Not measured | Not measured | Not measured | 32 Isel (2) |
|
Port Talbot Little Warren |
Not measured | Not measured | Not measured | Not measured | 35 Isel (3) |
|
Port Talbot Margam |
17 Isel (1) |
51 Isel (1) |
2 Isel (1) |
No Data | 29 Isel (2) |
|
Port Talbot Prince Street 2 |
Not measured | Not measured | Not measured | 19 Isel (2) |
26 Isel (2) |
|
Port Talbot Twll-yn-y-Wal Park |
Not measured | Not measured | Not measured | Not measured | 26 Isel (2) |
|
Rhondda Glyncoch Garth Avenue |
Not measured | Not measured | Not measured | Not measured | 33 Isel (2) |
|
Rhondda Mountain Ash |
Not measured | 87 Isel (2) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd |
Not measured | 78 Isel (2) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS |
21 Isel (1) |
89 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 | 58 Isel (1) |
Not measured | 26 Isel (3) |
Not measured |
|
Swansea Roadside |
Not measured | 67 Isel (1) |
Not measured | 21 Isel (2) |
30 Isel (2) |
|
Swansea St Thomas DOAS |
42 Isel (2) |
87 Isel (2) |
10 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 |
|
V Glamorgan Windsor Road Penarth |
25 Isel (1) |
57 Isel (1) |
Not measured | Not measured | 18 Isel (2) |
|
Wrexham |
Not measured | 74 Isel (2) |
16 Isel (1) |
13 Isel (2) |
16 Isel (1) |