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 6
Isel (1)
23
Isel (2)
Anglesey Llynfaes
Not measured Not measured Not measured 4
Isel (1)
14
Isel (1)
Anglesey Penhesgyn 3
Not measured Not measured Not measured 6
Isel (1)
16
Isel (1)
Aston Hill
75
Isel (3)
6
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Not measured 11
Isel (1)
Not measured Not measured 22
Isel (2)
Caerphilly Fochriw
Not measured Not measured Not measured 10
Isel (1)
18
Isel (2)
Caerphilly Islwyn Road Wattsville
Not measured 13
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 21
Isel (1)
Not measured Not measured 24
Isel (2)
Cardiff Centre
74
Isel (3)
16
Isel (1)
3
Isel (1)
10
Isel (1)
19
Isel (2)
Cardiff Newport Road
Not measured 25
Isel (1)
Not measured Not measured 24
Isel (2)
Chepstow A48
Not measured 28
Isel (1)
Not measured No Data 22
Isel (2)
Cimla Road / Victoria Gardens
Not measured 46
Isel (1)
Not measured Not measured Not measured
Cwmbran
No Data No Data Not measured Not measured 23
Isel (2)
Hafod-yr-ynys Roadside
Not measured 70
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
94
Isel (3)
3
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 21
Isel (1)
Not measured Not measured Not measured
Narberth
67
Isel (3)
8
Isel (1)
3
Isel (1)
8
Isel (1)
13
Isel (1)
Newport M4 Junction 25
61
Isel (2)
28
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 26
Isel (1)
Not measured 9
Isel (1)
16
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured Not measured Not measured
Port Talbot Little Warren
Not measured Not measured Not measured Not measured 23
Isel (2)
Port Talbot Margam
76
Isel (3)
29
Isel (1)
22
Isel (1)
14
Isel (2)
28
Isel (2)
Port Talbot Prince Street 2
Not measured Not measured Not measured 12
Isel (2)
26
Isel (2)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured 32
Isel (2)
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured Not measured 11
Isel (1)
Rhondda Mountain Ash
Not measured 52
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 20
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 19
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Not measured Not measured Not measured Not measured Not measured
Swansea Hafod DOAS
Not measured Not measured Not measured Not measured Not measured
Swansea Morfa Road NOX
Not measured Not measured Not measured Not measured Not measured
Swansea Morriston Roadside
Not measured Not measured Not measured Not measured Not measured
Swansea Port Tennant Roadside
Not measured Not measured Not measured Not measured Not measured
Swansea Roadside
Not measured 32
Isel (1)
Not measured 11
Isel (1)
24
Isel (2)
Swansea St Thomas DOAS
Not measured Not measured Not measured Not measured Not measured
Swansea Station Court High Street
Not measured Not measured Not measured Not measured Not measured
Twynyrodyn
Not measured Not measured Not measured Not measured Not measured
V Glamorgan Windsor Road Penarth
54
Isel (2)
46
Isel (1)
Not measured Not measured 25
Isel (2)
Wrexham
Not measured 29
Isel (1)
4
Isel (1)
10
Isel (1)
16
Isel (1)