Crynodeb 24 Awr

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.

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)
20
Isel (2)
Anglesey Llynfaes
Not measured Not measured Not measured 7
Isel (1)
29
Isel (2)
Anglesey Penhesgyn 3
Not measured Not measured Not measured 5
Isel (1)
13
Isel (1)
Aston Hill
61
Isel (2)
2
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Not measured 45
Isel (1)
Not measured Not measured 15
Isel (1)
Caerphilly Fochriw
Not measured Not measured Not measured 7
Isel (1)
14
Isel (1)
Caerphilly Islwyn Road Wattsville
Not measured Not measured Not measured Not measured Not measured
Caerphilly White Street
Not measured 50
Isel (1)
Not measured Not measured 18
Isel (2)
Cardiff Centre
55
Isel (2)
40
Isel (1)
6
Isel (1)
No Data No Data
Cardiff Newport Road
Not measured 23
Isel (1)
Not measured Not measured No Data
Chepstow A48
Not measured 38
Isel (1)
Not measured 10
Isel (1)
18
Isel (2)
Cimla Road / Victoria Gardens
Not measured 41
Isel (1)
Not measured Not measured Not measured
Cwmbran
76
Isel (3)
8
Isel (1)
Not measured Not measured 20
Isel (2)
Hafod-yr-ynys Roadside
Not measured 116
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
Not measured Not measured Not measured Not measured Not measured
Nantgarw Road
Not measured 45
Isel (1)
Not measured Not measured Not measured
Narberth
46
Isel (2)
5
Isel (1)
7
Isel (1)
6
Isel (1)
11
Isel (1)
Newport M4 Junction 25
35
Isel (2)
56
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 19
Isel (1)
Not measured 9
Isel (1)
23
Isel (2)
Port Talbot Dyffryn School
Not measured Not measured Not measured Not measured 24
Isel (2)
Port Talbot Little Warren
Not measured Not measured Not measured Not measured 16
Isel (1)
Port Talbot Margam
57
Isel (2)
22
Isel (1)
13
Isel (1)
11
Isel (1)
27
Isel (2)
Port Talbot Prince Street 2
Not measured Not measured Not measured 10
Isel (1)
41
Isel (3)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured 26
Isel (2)
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured Not measured Not measured
Rhondda Mountain Ash
Not measured 64
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 73
Isel (2)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 31
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
64
Isel (2)
4
Isel (1)
Not measured Not measured Not measured
Swansea Hafod DOAS
62
Isel (2)
15
Isel (1)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Not measured 27
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 19
Isel (1)
Not measured No Data No Data
Swansea St Thomas DOAS
67
Isel (3)
40
Isel (1)
3
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Not measured 87
Isel (2)
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)
44
Isel (1)
Not measured Not measured 24
Isel (2)
Wrexham
Not measured 22
Isel (1)
2
Isel (1)
6
Isel (1)
10
Isel (1)