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 8
Isel (1)
14
Isel (1)
Anglesey Llynfaes
Not measured Not measured Not measured 10
Isel (1)
25
Isel (2)
Anglesey Penhesgyn 3
Not measured Not measured Not measured 7
Isel (1)
12
Isel (1)
Aston Hill
59
Isel (2)
17
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Not measured 55
Isel (1)
Not measured Not measured No Data
Caerphilly Fochriw
Not measured Not measured Not measured 6
Isel (1)
7
Isel (1)
Caerphilly Islwyn Road Wattsville
Not measured 43
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 80
Isel (2)
Not measured Not measured 13
Isel (1)
Cardiff Centre
42
Isel (2)
159
Isel (3)
7
Isel (1)
5
Isel (1)
16
Isel (1)
Cardiff Newport Road
Not measured 84
Isel (2)
Not measured Not measured 14
Isel (1)
Chepstow A48
Not measured 76
Isel (2)
Not measured 10
Isel (1)
15
Isel (1)
Cimla Road / Victoria Gardens
Not measured Not measured Not measured Not measured Not measured
Cwmbran
53
Isel (2)
23
Isel (1)
Not measured Not measured 11
Isel (1)
Hafod-yr-ynys Roadside
Not measured 158
Isel (3)
Not measured Not measured Not measured
Marchlyn Mawr
Not measured Not measured Not measured Not measured Not measured
Nantgarw Road
Not measured 63
Isel (1)
Not measured Not measured Not measured
Narberth
65
Isel (2)
5
Isel (1)
2
Isel (1)
3
Isel (1)
8
Isel (1)
Newport M4 Junction 25
32
Isel (1)
67
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 66
Isel (1)
Not measured 6
Isel (1)
9
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured Not measured 13
Isel (1)
Port Talbot Little Warren
Not measured Not measured Not measured Not measured 15
Isel (1)
Port Talbot Margam
63
Isel (2)
37
Isel (1)
10
Isel (1)
6
Isel (1)
9
Isel (1)
Port Talbot Prince Street 2
Not measured Not measured Not measured 4
Isel (1)
8
Isel (1)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured 11
Isel (1)
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured Not measured 21
Isel (2)
Rhondda Mountain Ash
Not measured 105
Isel (2)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 109
Isel (2)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 59
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
49
Isel (2)
48
Isel (1)
Not measured Not measured Not measured
Swansea Hafod DOAS
58
Isel (2)
109
Isel (2)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Not measured 61
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 60
Isel (1)
Not measured 5
Isel (1)
12
Isel (1)
Swansea St Thomas DOAS
68
Isel (3)
92
Isel (2)
16
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Not measured 109
Isel (2)
Not measured Not measured Not measured
Twynyrodyn
Not measured Not measured Not measured Not measured Not measured
V Glamorgan Windsor Road Penarth
29
Isel (1)
89
Isel (2)
Not measured Not measured 18
Isel (2)
Wrexham
Not measured 38
Isel (1)
6
Isel (1)
8
Isel (1)
13
Isel (1)