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)
22
Isel (2)
Anglesey Llynfaes
Not measured Not measured Not measured 12
Isel (2)
27
Isel (2)
Anglesey Penhesgyn 3
Not measured Not measured Not measured 7
Isel (1)
13
Isel (1)
Aston Hill
57
Isel (2)
4
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Not measured 45
Isel (1)
Not measured Not measured 12
Isel (1)
Caerphilly Fochriw
Not measured Not measured Not measured 5
Isel (1)
7
Isel (1)
Caerphilly Islwyn Road Wattsville
Not measured 28
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 67
Isel (1)
Not measured Not measured 16
Isel (1)
Cardiff Centre
52
Isel (2)
40
Isel (1)
3
Isel (1)
13
Isel (2)
15
Isel (1)
Cardiff Newport Road
Not measured 66
Isel (1)
Not measured Not measured 18
Isel (2)
Chepstow A48
Not measured 49
Isel (1)
Not measured 11
Isel (1)
16
Isel (1)
Cimla Road / Victoria Gardens
Not measured 38
Isel (1)
Not measured Not measured Not measured
Cwmbran
56
Isel (2)
33
Isel (1)
Not measured Not measured 12
Isel (1)
Hafod-yr-ynys Roadside
Not measured 131
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
No Data No Data Not measured Not measured Not measured
Nantgarw Road
Not measured 38
Isel (1)
Not measured Not measured Not measured
Narberth
36
Isel (2)
3
Isel (1)
5
Isel (1)
5
Isel (1)
8
Isel (1)
Newport M4 Junction 25
16
Isel (1)
73
Isel (2)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 52
Isel (1)
Not measured 8
Isel (1)
13
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured Not measured 21
Isel (2)
Port Talbot Little Warren
Not measured Not measured Not measured Not measured 14
Isel (1)
Port Talbot Margam
56
Isel (2)
20
Isel (1)
68
Isel (1)
9
Isel (1)
16
Isel (1)
Port Talbot Prince Street 2
Not measured Not measured Not measured 6
Isel (1)
13
Isel (1)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured 10
Isel (1)
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured Not measured No Data
Rhondda Mountain Ash
Not measured 56
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 59
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 40
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
58
Isel (2)
51
Isel (1)
Not measured Not measured Not measured
Swansea Hafod DOAS
57
Isel (2)
46
Isel (1)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Not measured 19
Isel (1)
Not measured Not measured Not measured
Swansea Morriston Roadside
No Data No Data Not measured No Data Not measured
Swansea Roadside
Not measured 39
Isel (1)
Not measured 13
Isel (2)
13
Isel (1)
Swansea St Thomas DOAS
82
Isel (3)
31
Isel (1)
2
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Not measured 101
Isel (2)
Not measured Not measured Not measured
Twynyrodyn
Not measured Not measured Not measured No Data No Data
V Glamorgan Windsor Road Penarth
40
Isel (2)
41
Isel (1)
Not measured Not measured 20
Isel (2)
Wrexham
Not measured 33
Isel (1)
2
Isel (1)
5
Isel (1)
8
Isel (1)