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)
16
Isel (1)
Anglesey Llynfaes
Not measured Not measured Not measured Not measured Not measured
Anglesey Penhesgyn 3
Not measured Not measured Not measured Not measured Not measured
Aston Hill
63
Isel (2)
2
Isel (1)
Not measured Not measured Not measured
Bridgend Park Street
Not measured Not measured Not measured Not measured Not measured
Caerphilly Blackwood High Street
Not measured 43
Isel (1)
Not measured Not measured 18
Isel (2)
Caerphilly Fochriw
Not measured Not measured Not measured 5
Isel (1)
15
Isel (1)
Caerphilly Islwyn Road Wattsville
Not measured 27
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 20
Isel (1)
Not measured Not measured 17
Isel (2)
Cardiff Castle Street
Not measured 36
Isel (1)
Not measured 6
Isel (1)
19
Isel (2)
Cardiff Centre
58
Isel (2)
9
Isel (1)
2
Isel (1)
8
Isel (1)
14
Isel (1)
Cardiff Newport Road
Not measured 10
Isel (1)
Not measured Not measured 17
Isel (2)
Chepstow A48
Not measured 48
Isel (1)
Not measured 9
Isel (1)
15
Isel (1)
Cimla Road / Victoria Gardens
Not measured Not measured Not measured Not measured Not measured
Cwmbran Crownbridge
66
Isel (2)
11
Isel (1)
Not measured Not measured 17
Isel (2)
Hafod-yr-ynys Roadside
Not measured 90
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
64
Isel (2)
1
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 12
Isel (1)
Not measured Not measured Not measured
Narberth
58
Isel (2)
2
Isel (1)
2
Isel (1)
6
Isel (1)
12
Isel (1)
Newport M4 Junction 25
46
Isel (2)
No Data Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 10
Isel (1)
Not measured 5
Isel (1)
15
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured 3
Isel (1)
No Data
Port Talbot Little Warren
Not measured Not measured Not measured 6
Isel (1)
21
Isel (2)
Port Talbot Margam
43
Isel (2)
26
Isel (1)
3
Isel (1)
6
Isel (1)
20
Isel (2)
Port Talbot Prince Street 2
Not measured Not measured Not measured 7
Isel (1)
21
Isel (2)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured Not measured
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured Not measured 19
Isel (2)
Rhondda Mountain Ash
Not measured 43
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 33
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 14
Isel (1)
Not measured 6
Isel (1)
13
Isel (1)
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
Wrexham
Not measured 17
Isel (1)
11
Isel (1)
4
Isel (1)
10
Isel (1)
Wrexham Chirk
Not measured 15
Isel (1)
Not measured 6
Isel (1)
13
Isel (1)
Wrexham Chirk Community Hospital
Not measured 17
Isel (1)
Not measured 7
Isel (1)
15
Isel (1)