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)
25
Isel (2)
Anglesey Llynfaes
Not measured Not measured Not measured 4
Isel (1)
19
Isel (2)
Anglesey Penhesgyn 3
Not measured Not measured Not measured 5
Isel (1)
10
Isel (1)
Aston Hill
56
Isel (2)
2
Isel (1)
Not measured Not measured Not measured
Bridgend Park Street
Not measured 37
Isel (1)
Not measured Not measured 18
Isel (2)
Caerphilly Blackwood High Street
Not measured 50
Isel (1)
Not measured Not measured 18
Isel (2)
Caerphilly Fochriw
Not measured Not measured Not measured Not measured Not measured
Caerphilly Islwyn Road Wattsville
Not measured 30
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 86
Isel (2)
Not measured Not measured 23
Isel (2)
Cardiff Castle Street
Not measured 26
Isel (1)
Not measured 6
Isel (1)
14
Isel (1)
Cardiff Centre
55
Isel (2)
20
Isel (1)
5
Isel (1)
9
Isel (1)
11
Isel (1)
Cardiff Newport Road
Not measured 14
Isel (1)
Not measured Not measured 15
Isel (1)
Chepstow A48
Not measured 45
Isel (1)
Not measured 14
Isel (2)
14
Isel (1)
Cimla Road / Victoria Gardens
Not measured 33
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
45
Isel (2)
12
Isel (1)
Not measured Not measured 16
Isel (1)
Hafod-yr-ynys Roadside
Not measured 118
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
56
Isel (2)
3
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 38
Isel (1)
Not measured Not measured Not measured
Narberth
56
Isel (2)
3
Isel (1)
4
Isel (1)
4
Isel (1)
7
Isel (1)
Newport M4 Junction 25
34
Isel (2)
54
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 19
Isel (1)
Not measured 8
Isel (1)
13
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured Not measured Not measured
Port Talbot Little Warren
Not measured Not measured Not measured Not measured 15
Isel (1)
Port Talbot Margam
58
Isel (2)
15
Isel (1)
3
Isel (1)
12
Isel (2)
33
Isel (2)
Port Talbot Prince Street 2
Not measured Not measured Not measured 11
Isel (1)
30
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 16
Isel (1)
Rhondda Mountain Ash
Not measured 43
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 92
Isel (2)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 27
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
56
Isel (2)
No Data Not measured Not measured Not measured
Swansea Hafod DOAS
60
Isel (2)
22
Isel (1)
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 36
Isel (1)
Not measured 14
Isel (2)
Not measured
Swansea Roadside
Not measured 15
Isel (1)
Not measured 13
Isel (2)
10
Isel (1)
Swansea St Thomas DOAS
41
Isel (2)
38
Isel (1)
3
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Not measured 42
Isel (1)
Not measured Not measured Not measured
Twynyrodyn
Not measured Not measured Not measured Not measured Not measured
Wrexham
Not measured 15
Isel (1)
1
Isel (1)
5
Isel (1)
9
Isel (1)
Wrexham Chirk
Not measured 34
Isel (1)
Not measured 2
Isel (1)
7
Isel (1)