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) |
21 Isel (2) |
|
Anglesey Llynfaes |
Not measured | Not measured | Not measured | 6 Isel (1) |
20 Isel (2) |
|
Anglesey Penhesgyn 3 |
Not measured | Not measured | Not measured | 5 Isel (1) |
17 Isel (2) |
|
Aston Hill |
104 Cymedrol (4) |
9 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street |
Not measured | 32 Isel (1) |
Not measured | Not measured | 24 Isel (2) |
|
Caerphilly Fochriw |
Not measured | Not measured | Not measured | 8 Isel (1) |
18 Isel (2) |
|
Caerphilly Islwyn Road Wattsville |
Not measured | 28 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street |
Not measured | No Data | Not measured | Not measured | 21 Isel (2) |
|
Cardiff Centre |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Cardiff Newport Road |
Not measured | 72 Isel (2) |
Not measured | Not measured | 27 Isel (2) |
|
Chepstow A48 |
Not measured | 53 Isel (1) |
Not measured | 15 Isel (2) |
26 Isel (2) |
|
Cimla Road / Victoria Gardens |
Not measured | 45 Isel (1) |
Not measured | Not measured | Not measured |
|
Cwmbran |
97 Isel (3) |
21 Isel (1) |
Not measured | Not measured | 26 Isel (2) |
|
Hafod-yr-ynys Roadside |
Not measured | 88 Isel (2) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr |
No Data | 5 Isel (1) |
Not measured | Not measured | Not measured |
|
Nantgarw Road |
Not measured | 25 Isel (1) |
Not measured | Not measured | Not measured |
|
Narberth |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Newport M4 Junction 25 |
50 Isel (2) |
93 Isel (2) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School |
Not measured | 42 Isel (1) |
Not measured | 12 Isel (2) |
22 Isel (2) |
|
Port Talbot Dyffryn School |
Not measured | Not measured | Not measured | Not measured | 26 Isel (2) |
|
Port Talbot Little Warren |
Not measured | Not measured | Not measured | Not measured | 82 Uchel (7) |
|
Port Talbot Margam |
94 Isel (3) |
11 Isel (1) |
2 Isel (1) |
12 Isel (2) |
21 Isel (2) |
|
Port Talbot Prince Street 2 |
Not measured | Not measured | Not measured | 9 Isel (1) |
20 Isel (2) |
|
Port Talbot Twll-yn-y-Wal Park |
Not measured | Not measured | Not measured | Not measured | 23 Isel (2) |
|
Rhondda Glyncoch Garth Avenue |
Not measured | Not measured | Not measured | Not measured | 23 Isel (2) |
|
Rhondda Mountain Ash |
Not measured | 58 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd |
Not measured | 49 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway |
Not measured | 43 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 |
65 Isel (2) |
68 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 Roadside |
Not measured | 48 Isel (1) |
Not measured | 13 Isel (2) |
37 Isel (3) |
|
Swansea St Thomas DOAS |
85 Isel (3) |
49 Isel (1) |
52 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 |
55 Isel (2) |
39 Isel (1) |
Not measured | Not measured | 27 Isel (2) |
|
Wrexham |
Not measured | 35 Isel (1) |
1 Isel (1) |
13 Isel (2) |
22 Isel (2) |