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 35
Isel (3)
53
Cymedrol (4)
Anglesey Llynfaes
Not measured Not measured Not measured 36
Cymedrol (4)
54
Cymedrol (4)
Anglesey Penhesgyn 3
Not measured Not measured Not measured 28
Isel (3)
41
Isel (3)
Aston Hill
84
Isel (3)
1
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Not measured 37
Isel (1)
Not measured Not measured 21
Isel (2)
Caerphilly Fochriw
Not measured Not measured Not measured 7
Isel (1)
13
Isel (1)
Caerphilly Islwyn Road Wattsville
Not measured Not measured Not measured Not measured Not measured
Caerphilly White Street
Not measured 9
Isel (1)
Not measured Not measured 24
Isel (2)
Cardiff Centre
75
Isel (3)
18
Isel (1)
23
Isel (1)
6
Isel (1)
24
Isel (2)
Cardiff Newport Road
Not measured 17
Isel (1)
Not measured Not measured 25
Isel (2)
Chepstow A48
Not measured 49
Isel (1)
Not measured 8
Isel (1)
24
Isel (2)
Cimla Road / Victoria Gardens
Not measured 46
Isel (1)
Not measured Not measured Not measured
Cwmbran
83
Isel (3)
4
Isel (1)
Not measured Not measured 26
Isel (2)
Hafod-yr-ynys Roadside
Not measured 44
Isel (1)
Not measured Not measured Not measured
Marchlyn Mawr
56
Isel (2)
2
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 40
Isel (1)
Not measured Not measured Not measured
Narberth
78
Isel (3)
1
Isel (1)
3
Isel (1)
11
Isel (1)
18
Isel (2)
Newport M4 Junction 25
70
Isel (3)
43
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 18
Isel (1)
Not measured 11
Isel (1)
23
Isel (2)
Port Talbot Dyffryn School
Not measured Not measured Not measured Not measured 49
Isel (3)
Port Talbot Little Warren
Not measured Not measured Not measured Not measured 29
Isel (2)
Port Talbot Margam
72
Isel (3)
30
Isel (1)
259
Isel (3)
22
Isel (2)
75
Cymedrol (6)
Port Talbot Prince Street 2
Not measured Not measured Not measured 17
Isel (2)
52
Cymedrol (4)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured 57
Cymedrol (4)
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured Not measured 22
Isel (2)
Rhondda Mountain Ash
Not measured Not measured Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 51
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 39
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 15
Isel (1)
Not measured 10
Isel (1)
33
Isel (2)
Swansea St Thomas DOAS
99
Isel (3)
37
Isel (1)
2
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Not measured 180
Isel (3)
Not measured Not measured Not measured
Twynyrodyn
Not measured Not measured Not measured Not measured Not measured
V Glamorgan Windsor Road Penarth
77
Isel (3)
21
Isel (1)
Not measured Not measured 25
Isel (2)
Wrexham
Not measured 7
Isel (1)
12
Isel (1)
5
Isel (1)
9
Isel (1)