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 2
Isel (1)
9
Isel (1)
Anglesey Llynfaes
Not measured Not measured Not measured 2
Isel (1)
11
Isel (1)
Anglesey Penhesgyn 3
Not measured Not measured Not measured 2
Isel (1)
9
Isel (1)
Aston Hill
60
Isel (2)
3
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Not measured 20
Isel (1)
Not measured Not measured 7
Isel (1)
Caerphilly Fochriw
Not measured Not measured Not measured Not measured Not measured
Caerphilly Islwyn Road Wattsville
Not measured 12
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 40
Isel (1)
Not measured Not measured 11
Isel (1)
Cardiff Centre
50
Isel (2)
26
Isel (1)
No Data No Data No Data
Cardiff Newport Road
Not measured 23
Isel (1)
Not measured Not measured No Data
Chepstow A48
Not measured 36
Isel (1)
Not measured 4
Isel (1)
8
Isel (1)
Cimla Road / Victoria Gardens
Not measured 35
Isel (1)
Not measured Not measured Not measured
Cwmbran
56
Isel (2)
6
Isel (1)
Not measured Not measured 9
Isel (1)
Hafod-yr-ynys Roadside
Not measured 73
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
62
Isel (2)
2
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 26
Isel (1)
Not measured Not measured Not measured
Narberth
47
Isel (2)
3
Isel (1)
2
Isel (1)
2
Isel (1)
4
Isel (1)
Newport M4 Junction 25
36
Isel (2)
35
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 25
Isel (1)
Not measured 4
Isel (1)
7
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured Not measured 15
Isel (1)
Port Talbot Little Warren
Not measured Not measured Not measured Not measured 11
Isel (1)
Port Talbot Margam
41
Isel (2)
13
Isel (1)
17
Isel (1)
No Data No Data
Port Talbot Prince Street 2
Not measured Not measured Not measured 9
Isel (1)
32
Isel (2)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured 1
Isel (1)
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured Not measured 11
Isel (1)
Rhondda Mountain Ash
Not measured 40
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 31
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 35
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 30
Isel (1)
Not measured No Data No Data
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
40
Isel (2)
26
Isel (1)
Not measured Not measured 14
Isel (1)
Wrexham
Not measured 16
Isel (1)
4
Isel (1)
2
Isel (1)
5
Isel (1)