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
Aston Hill
84
Low (3)
3
Low (1)
Not measured Not measured Not measured
Bridgend Park Street
Not measured 37
Low (1)
Not measured Not measured 9
Low (1)
Caerphilly Blackwood High Street
Not measured Not measured Not measured Not measured Not measured
Caerphilly Fochriw
Not measured Not measured Not measured Not measured 8
Low (1)
Caerphilly Islwyn Road Wattsville
Not measured 20
Low (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured Not measured Not measured Not measured Not measured
Cardiff Castle Street
Not measured Not measured Not measured Not measured Not measured
Cardiff Centre
73
Low (3)
11
Low (1)
1
Low (1)
5
Low (1)
9
Low (1)
Cardiff Newport Road
Not measured 12
Low (1)
Not measured Not measured 13
Low (1)
Chepstow A48
Not measured 3
Low (1)
Not measured 4
Low (1)
12
Low (1)
Cimla Road / Victoria Gardens
Not measured 23
Low (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
72
Low (3)
9
Low (1)
Not measured Not measured Not measured
Hafod-yr-ynys Hill Roadside
Not measured 19
Low (1)
Not measured Not measured Not measured
Marchlyn Mawr
Not measured 1
Low (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 17
Low (1)
Not measured Not measured Not measured
Narberth
66
Low (2)
3
Low (1)
1
Low (1)
5
Low (1)
8
Low (1)
Newport M4 Junction 25
Not measured Not measured Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 10
Low (1)
Not measured 4
Low (1)
8
Low (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 Not measured
Port Talbot Margam
69
Low (3)
3
Low (1)
1
Low (1)
7
Low (1)
21
Low (2)
Port Talbot Prince Street 2
Not measured Not measured Not measured Not measured Not measured
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 Not measured
Rhondda Mountain Ash
Not measured 89
Low (2)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 13
Low (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured Not measured Not measured Not measured Not measured
Swansea Cwm Level Park
81
Low (3)
8
Low (1)
Not measured Not measured Not measured
Swansea Hafod DOAS
79
Low (3)
16
Low (1)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Not measured 9
Low (1)
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 8
Low (1)
Not measured 7
Low (1)
Not measured
Swansea Roadside
Not measured 19
Low (1)
Not measured 8
Low (1)
12
Low (1)
Swansea St Thomas DOAS
91
Low (3)
28
Low (1)
4
Low (1)
Not measured Not measured
Swansea Station Court High Street
Not measured 39
Low (1)
Not measured Not measured Not measured
Wrexham
Not measured 17
Low (1)
1
Low (1)
5
Low (1)
8
Low (1)
Wrexham Chirk
Not measured Not measured Not measured Not measured Not measured
Wrexham Chirk Community Hospital
Not measured Not measured Not measured Not measured Not measured