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 | 11 Isel (1) |
32 Isel (2) |
|
Anglesey Felin Cafnan |
Not measured | Not measured | Not measured | 7 Isel (1) |
24 Isel (2) |
|
Anglesey Llynfaes |
Not measured | Not measured | Not measured | 16 Isel (2) |
35 Isel (3) |
|
Anglesey Penhesgyn 3 |
Not measured | Not measured | Not measured | 12 Isel (2) |
30 Isel (2) |
|
Aston Hill |
64 Isel (2) |
11 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street |
Not measured | 82 Isel (2) |
Not measured | Not measured | 30 Isel (2) |
|
Caerphilly Fochriw |
Not measured | Not measured | Not measured | 23 Isel (2) |
27 Isel (2) |
|
Caerphilly Islwyn Road Wattsville |
Not measured | 64 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street |
Not measured | 93 Isel (2) |
Not measured | Not measured | 35 Isel (3) |
|
Cardiff Centre |
32 Isel (1) |
63 Isel (1) |
4 Isel (1) |
52 Cymedrol (6) |
59 Cymedrol (5) |
|
Cardiff Newport Road |
Not measured | 85 Isel (2) |
Not measured | Not measured | 62 Cymedrol (5) |
|
Chepstow A48 |
Not measured | 89 Isel (2) |
Not measured | 37 Cymedrol (4) |
48 Isel (3) |
|
Cimla Road / Victoria Gardens |
Not measured | 67 Isel (1) |
Not measured | Not measured | Not measured |
|
Cwmbran |
31 Isel (1) |
80 Isel (2) |
Not measured | Not measured | 27 Isel (2) |
|
Hafod-yr-ynys Roadside |
Not measured | 141 Isel (3) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr |
No Data | No Data | Not measured | Not measured | Not measured |
|
Nantgarw Road |
Not measured | 70 Isel (2) |
Not measured | Not measured | Not measured |
|
Narberth |
57 Isel (2) |
11 Isel (1) |
3 Isel (1) |
18 Isel (2) |
28 Isel (2) |
|
Newport M4 Junction 25 |
13 Isel (1) |
80 Isel (2) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School |
Not measured | 76 Isel (2) |
Not measured | 33 Isel (3) |
41 Isel (3) |
|
Port Talbot Dyffryn School |
Not measured | Not measured | Not measured | Not measured | 36 Isel (3) |
|
Port Talbot Little Warren |
Not measured | Not measured | Not measured | Not measured | 125 Uchel Lawn (10) |
|
Port Talbot Margam |
79 Isel (3) |
19 Isel (1) |
2 Isel (1) |
25 Isel (3) |
32 Isel (2) |
|
Port Talbot Prince Street 2 |
Not measured | Not measured | Not measured | No Data | No Data |
|
Port Talbot Twll-yn-y-Wal Park |
Not measured | Not measured | Not measured | Not measured | 34 Isel (3) |
|
Rhondda Glyncoch Garth Avenue |
Not measured | Not measured | Not measured | Not measured | No Data |
|
Rhondda Mountain Ash |
Not measured | 102 Isel (2) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd |
Not measured | 68 Isel (2) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway |
Not measured | 65 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park |
55 Isel (2) |
49 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS |
49 Isel (2) |
88 Isel (2) |
Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX |
Not measured | 58 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside |
62 Isel (2) |
95 Isel (2) |
Not measured | No Data | Not measured |
|
Swansea Roadside |
Not measured | 69 Isel (2) |
Not measured | 35 Isel (3) |
58 Cymedrol (4) |
|
Swansea St Thomas DOAS |
69 Isel (3) |
71 Isel (2) |
54 Isel (1) |
Not measured | Not measured |
|
Swansea Station Court High Street |
Not measured | 82 Isel (2) |
Not measured | Not measured | Not measured |
|
Twynyrodyn |
Not measured | Not measured | Not measured | No Data | No Data |
|
V Glamorgan Windsor Road Penarth |
8 Isel (1) |
66 Isel (1) |
Not measured | Not measured | 38 Isel (3) |
|
Wrexham |
Not measured | No Data | No Data | No Data | No Data |