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 | Not measured | Not measured |
|
Anglesey Llynfaes |
Not measured | Not measured | Not measured | 14 Isel (2) |
24 Isel (2) |
|
Anglesey Penhesgyn 3 |
Not measured | Not measured | Not measured | 8 Isel (1) |
13 Isel (1) |
|
Aston Hill |
73 Isel (3) |
10 Isel (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 | 29 Isel (1) |
Not measured | Not measured | 34 Isel (3) |
|
Caerphilly Fochriw |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Caerphilly Islwyn Road Wattsville |
Not measured | 29 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street |
Not measured | 43 Isel (1) |
Not measured | Not measured | 24 Isel (2) |
|
Cardiff Castle Street |
Not measured | 47 Isel (1) |
Not measured | 16 Isel (2) |
24 Isel (2) |
|
Cardiff Centre |
64 Isel (2) |
36 Isel (1) |
7 Isel (1) |
15 Isel (2) |
19 Isel (2) |
|
Cardiff Newport Road |
Not measured | 51 Isel (1) |
Not measured | Not measured | 28 Isel (2) |
|
Chepstow A48 |
Not measured | 29 Isel (1) |
Not measured | 20 Isel (2) |
23 Isel (2) |
|
Cimla Road / Victoria Gardens |
Not measured | 70 Isel (2) |
Not measured | Not measured | Not measured |
|
Cwmbran Crownbridge |
70 Isel (3) |
21 Isel (1) |
Not measured | Not measured | 17 Isel (2) |
|
Hafod-yr-ynys Roadside |
Not measured | 74 Isel (2) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr |
80 Isel (3) |
3 Isel (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road |
Not measured | 49 Isel (1) |
Not measured | Not measured | Not measured |
|
Narberth |
68 Isel (3) |
6 Isel (1) |
No Data | 11 Isel (1) |
14 Isel (1) |
|
Newport M4 Junction 25 |
48 Isel (2) |
45 Isel (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School |
Not measured | 25 Isel (1) |
Not measured | 13 Isel (2) |
17 Isel (2) |
|
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 | 21 Isel (2) |
|
Port Talbot Margam |
64 Isel (2) |
64 Isel (1) |
2 Isel (1) |
19 Isel (2) |
35 Isel (3) |
|
Port Talbot Prince Street 2 |
Not measured | Not measured | Not measured | 19 Isel (2) |
38 Isel (3) |
|
Port Talbot Twll-yn-y-Wal Park |
Not measured | Not measured | Not measured | Not measured | 35 Isel (3) |
|
Rhondda Glyncoch Garth Avenue |
Not measured | Not measured | Not measured | Not measured | 15 Isel (1) |
|
Rhondda Mountain Ash |
Not measured | 50 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd |
Not measured | 69 Isel (2) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway |
Not measured | 38 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 |
Not measured | Not measured | 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 | 59 Isel (1) |
Not measured | 19 Isel (2) |
31 Isel (2) |
|
Swansea St Thomas DOAS |
Not measured | Not measured | Not measured | 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 | 53 Isel (1) |
7 Isel (1) |
23 Isel (2) |
30 Isel (2) |
|
Wrexham Chirk |
Not measured | 61 Isel (1) |
Not measured | No Data | No Data |