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 Felin Cafnan
Not measured Not measured Not measured No Data No Data
Anglesey Llynfaes
Not measured Not measured Not measured 6
Isel (1)
12
Isel (1)
Anglesey Penhesgyn 3
Not measured Not measured Not measured 6
Isel (1)
10
Isel (1)
Aston Hill
64
Isel (2)
15
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Not measured 39
Isel (1)
Not measured Not measured 22
Isel (2)
Caerphilly Fochriw
Not measured Not measured Not measured 7
Isel (1)
14
Isel (1)
Caerphilly Islwyn Road Wattsville
Not measured 22
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 26
Isel (1)
Not measured Not measured 17
Isel (2)
Cardiff Centre
53
Isel (2)
37
Isel (1)
1
Isel (1)
10
Isel (1)
20
Isel (2)
Cardiff Newport Road
Not measured 55
Isel (1)
Not measured Not measured 30
Isel (2)
Chepstow A48
Not measured 65
Isel (1)
Not measured No Data 22
Isel (2)
Cimla Road / Victoria Gardens
Not measured 51
Isel (1)
Not measured Not measured Not measured
Cwmbran
62
Isel (2)
30
Isel (1)
Not measured Not measured 15
Isel (1)
Hafod-yr-ynys Roadside
Not measured 115
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
No Data No Data Not measured Not measured Not measured
Nantgarw Road
Not measured 33
Isel (1)
Not measured Not measured Not measured
Narberth
58
Isel (2)
10
Isel (1)
8
Isel (1)
10
Isel (1)
16
Isel (1)
Newport M4 Junction 25
43
Isel (2)
40
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 34
Isel (1)
Not measured 10
Isel (1)
14
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured Not measured No Data
Port Talbot Little Warren
Not measured Not measured Not measured Not measured 38
Isel (3)
Port Talbot Margam
58
Isel (2)
20
Isel (1)
2
Isel (1)
10
Isel (1)
17
Isel (2)
Port Talbot Prince Street 2
Not measured Not measured Not measured 7
Isel (1)
13
Isel (1)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured 15
Isel (1)
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured Not measured No Data
Rhondda Mountain Ash
Not measured 52
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 67
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 38
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
60
Isel (2)
21
Isel (1)
Not measured Not measured Not measured
Swansea Hafod DOAS
54
Isel (2)
38
Isel (1)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Not measured 49
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 36
Isel (1)
Not measured 11
Isel (1)
25
Isel (2)
Swansea St Thomas DOAS
72
Isel (3)
37
Isel (1)
30
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Not measured 74
Isel (2)
Not measured Not measured Not measured
Twynyrodyn
Not measured Not measured Not measured No Data No Data
V Glamorgan Windsor Road Penarth
56
Isel (2)
49
Isel (1)
Not measured Not measured 22
Isel (2)
Wrexham
Not measured No Data No Data No Data No Data