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)
8
Isel (1)
Anglesey Llynfaes
Not measured Not measured Not measured 5
Isel (1)
9
Isel (1)
Anglesey Penhesgyn 3
Not measured Not measured Not measured 5
Isel (1)
9
Isel (1)
Aston Hill
56
Isel (2)
8
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Not measured 30
Isel (1)
Not measured Not measured 9
Isel (1)
Caerphilly Fochriw
Not measured Not measured Not measured 6
Isel (1)
7
Isel (1)
Caerphilly Islwyn Road Wattsville
Not measured 44
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 98
Isel (2)
Not measured Not measured 10
Isel (1)
Cardiff Centre
44
Isel (2)
72
Isel (2)
14
Isel (1)
3
Isel (1)
12
Isel (1)
Cardiff Newport Road
Not measured 54
Isel (1)
Not measured Not measured 9
Isel (1)
Chepstow A48
Not measured 27
Isel (1)
Not measured 9
Isel (1)
11
Isel (1)
Cimla Road / Victoria Gardens
Not measured 36
Isel (1)
Not measured Not measured Not measured
Cwmbran
59
Isel (2)
13
Isel (1)
Not measured Not measured 12
Isel (1)
Hafod-yr-ynys Roadside
Not measured 156
Isel (3)
Not measured Not measured Not measured
Marchlyn Mawr
63
Isel (2)
2
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 57
Isel (1)
Not measured Not measured Not measured
Narberth
50
Isel (2)
2
Isel (1)
3
Isel (1)
2
Isel (1)
5
Isel (1)
Newport M4 Junction 25
43
Isel (2)
28
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured No Data Not measured 5
Isel (1)
7
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured Not measured 10
Isel (1)
Port Talbot Little Warren
Not measured Not measured Not measured Not measured 7
Isel (1)
Port Talbot Margam
56
Isel (2)
11
Isel (1)
2
Isel (1)
5
Isel (1)
6
Isel (1)
Port Talbot Prince Street 2
Not measured Not measured Not measured 3
Isel (1)
7
Isel (1)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured 5
Isel (1)
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured Not measured 6
Isel (1)
Rhondda Mountain Ash
Not measured 75
Isel (2)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured Not measured Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 30
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
56
Isel (2)
18
Isel (1)
Not measured Not measured Not measured
Swansea Hafod DOAS
63
Isel (2)
73
Isel (2)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Not measured 41
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 24
Isel (1)
Not measured 3
Isel (1)
7
Isel (1)
Swansea St Thomas DOAS
60
Isel (2)
75
Isel (2)
2
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Not measured 68
Isel (2)
Not measured Not measured Not measured
Twynyrodyn
Not measured Not measured Not measured Not measured Not measured
V Glamorgan Windsor Road Penarth
42
Isel (2)
88
Isel (2)
Not measured Not measured 12
Isel (1)
Wrexham
Not measured 34
Isel (1)
9
Isel (1)
3
Isel (1)
6
Isel (1)