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) |
16 Isel (1) |
|
Anglesey Felin Cafnan |
Not measured | Not measured | Not measured | 20 Isel (2) |
36 Isel (3) |
|
Anglesey Llynfaes |
Not measured | Not measured | Not measured | 9 Isel (1) |
17 Isel (2) |
|
Anglesey Penhesgyn 3 |
Not measured | Not measured | Not measured | 8 Isel (1) |
18 Isel (2) |
|
Aston Hill |
142 Cymedrol (6) |
13 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly Blackwood High Street |
Not measured | 30 Isel (1) |
Not measured | Not measured | 28 Isel (2) |
|
Caerphilly Fochriw |
Not measured | Not measured | Not measured | 20 Isel (2) |
29 Isel (2) |
|
Caerphilly Islwyn Road Wattsville |
Not measured | 32 Isel (1) |
Not measured | Not measured | Not measured |
|
Caerphilly White Street |
Not measured | 56 Isel (1) |
Not measured | Not measured | 31 Isel (2) |
|
Cardiff Centre |
126 Cymedrol (5) |
84 Isel (2) |
5 Isel (1) |
28 Isel (3) |
37 Isel (3) |
|
Cardiff Newport Road |
Not measured | 83 Isel (2) |
Not measured | Not measured | 37 Isel (3) |
|
Chepstow A48 |
Not measured | 95 Isel (2) |
Not measured | 28 Isel (3) |
36 Isel (3) |
|
Cimla Road / Victoria Gardens |
Not measured | 55 Isel (1) |
Not measured | Not measured | Not measured |
|
Cwmbran |
135 Cymedrol (5) |
48 Isel (1) |
Not measured | Not measured | 29 Isel (2) |
|
Hafod-yr-ynys Roadside |
Not measured | 107 Isel (2) |
Not measured | Not measured | Not measured |
|
Marchlyn Mawr |
No Data | No Data | Not measured | Not measured | Not measured |
|
Nantgarw Road |
Not measured | No Data | Not measured | Not measured | Not measured |
|
Narberth |
122 Cymedrol (5) |
22 Isel (1) |
20 Isel (1) |
30 Isel (3) |
42 Isel (3) |
|
Newport M4 Junction 25 |
51 Isel (2) |
35 Isel (1) |
Not measured | Not measured | Not measured |
|
Newport St Julians Comp School |
Not measured | 89 Isel (2) |
Not measured | 25 Isel (3) |
33 Isel (2) |
|
Port Talbot Dyffryn School |
Not measured | Not measured | Not measured | Not measured | 63 Cymedrol (5) |
|
Port Talbot Little Warren |
Not measured | Not measured | Not measured | Not measured | 99 Uchel (9) |
|
Port Talbot Margam |
144 Cymedrol (6) |
26 Isel (1) |
4 Isel (1) |
28 Isel (3) |
54 Cymedrol (4) |
|
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 | 61 Cymedrol (5) |
|
Rhondda Glyncoch Garth Avenue |
Not measured | Not measured | Not measured | Not measured | No Data |
|
Rhondda Mountain Ash |
Not measured | 65 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda Pontypridd Gelliwastad Rd |
Not measured | 52 Isel (1) |
Not measured | Not measured | Not measured |
|
Rhondda-Cynon-Taf Broadway |
Not measured | 54 Isel (1) |
Not measured | Not measured | Not measured |
|
Swansea Cwm Level Park |
No Data | No Data | Not measured | Not measured | Not measured |
|
Swansea Hafod DOAS |
No Data | No Data | Not measured | Not measured | Not measured |
|
Swansea Morfa Road NOX |
Not measured | No Data | Not measured | Not measured | Not measured |
|
Swansea Morriston Roadside |
No Data | No Data | Not measured | No Data | Not measured |
|
Swansea Roadside |
Not measured | 52 Isel (1) |
Not measured | 28 Isel (3) |
33 Isel (2) |
|
Swansea St Thomas DOAS |
No Data | No Data | No Data | Not measured | Not measured |
|
Swansea Station Court High Street |
Not measured | No Data | Not measured | Not measured | Not measured |
|
Twynyrodyn |
Not measured | Not measured | Not measured | No Data | No Data |
|
V Glamorgan Windsor Road Penarth |
67 Isel (3) |
55 Isel (1) |
Not measured | Not measured | 30 Isel (2) |
|
Wrexham |
Not measured | 62 Isel (1) |
1 Isel (1) |
27 Isel (3) |
37 Isel (3) |