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 | 8 Isel (1) |
14 Isel (1) |
|
Anglesey Llynfaes |
Not measured | Not measured | Not measured | 10 Isel (1) |
25 Isel (2) |
|
Anglesey Penhesgyn 3 |
Not measured | Not measured | Not measured | 7 Isel (1) |
12 Isel (1) |
|
Aston Hill |
59 Isel (2) |
17 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street |
Not measured | 55 Isel (1) |
Not measured | Not measured | No Data |
|
Caerphilly Fochriw |
Not measured | Not measured | Not measured | 6 Isel (1) |
7 Isel (1) |
|
Caerphilly Islwyn Road Wattsville |
Not measured | 43 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street |
Not measured | 80 Isel (2) |
Not measured | Not measured | 13 Isel (1) |
|
Cardiff Centre |
42 Isel (2) |
159 Isel (3) |
7 Isel (1) |
5 Isel (1) |
16 Isel (1) |
|
Cardiff Newport Road |
Not measured | 84 Isel (2) |
Not measured | Not measured | 14 Isel (1) |
|
Chepstow A48 |
Not measured | 76 Isel (2) |
Not measured | 10 Isel (1) |
15 Isel (1) |
|
Cimla Road / Victoria Gardens |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Cwmbran |
53 Isel (2) |
23 Isel (1) |
Not measured | Not measured | 11 Isel (1) |
|
Hafod-yr-ynys Roadside |
Not measured | 158 Isel (3) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Nantgarw Road |
Not measured | 63 Isel (1) |
Not measured | Not measured | Not measured |
|
Narberth |
65 Isel (2) |
5 Isel (1) |
2 Isel (1) |
3 Isel (1) |
8 Isel (1) |
|
Newport M4 Junction 25 |
32 Isel (1) |
67 Isel (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School |
Not measured | 66 Isel (1) |
Not measured | 6 Isel (1) |
9 Isel (1) |
|
Port Talbot Dyffryn School |
Not measured | Not measured | Not measured | Not measured | 13 Isel (1) |
|
Port Talbot Little Warren |
Not measured | Not measured | Not measured | Not measured | 15 Isel (1) |
|
Port Talbot Margam |
63 Isel (2) |
37 Isel (1) |
10 Isel (1) |
6 Isel (1) |
9 Isel (1) |
|
Port Talbot Prince Street 2 |
Not measured | Not measured | Not measured | 4 Isel (1) |
8 Isel (1) |
|
Port Talbot Twll-yn-y-Wal Park |
Not measured | Not measured | Not measured | Not measured | 11 Isel (1) |
|
Rhondda Glyncoch Garth Avenue |
Not measured | Not measured | Not measured | Not measured | 21 Isel (2) |
|
Rhondda Mountain Ash |
Not measured | 105 Isel (2) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd |
Not measured | 109 Isel (2) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway |
Not measured | 59 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park |
49 Isel (2) |
48 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS |
58 Isel (2) |
109 Isel (2) |
Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX |
Not measured | 61 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
Swansea Roadside |
Not measured | 60 Isel (1) |
Not measured | 5 Isel (1) |
12 Isel (1) |
|
Swansea St Thomas DOAS |
68 Isel (3) |
92 Isel (2) |
16 Isel (1) |
Not measured | Not measured |
|
Swansea Station Court High Street |
Not measured | 109 Isel (2) |
Not measured | Not measured | Not measured |
|
Twynyrodyn |
Not measured | Not measured | Not measured | Not measured | Not measured |
|
V Glamorgan Windsor Road Penarth |
29 Isel (1) |
89 Isel (2) |
Not measured | Not measured | 18 Isel (2) |
|
Wrexham |
Not measured | 38 Isel (1) |
6 Isel (1) |
8 Isel (1) |
13 Isel (1) |