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
93
Isel (3)
4
Isel (1)
Not measured Not measured Not measured
Bridgend Park Street
Not measured 4
Isel (1)
Not measured Not measured 12
Isel (1)
Caerphilly Blackwood High Street
Not measured 10
Isel (1)
Not measured Not measured 14
Isel (1)
Caerphilly Fochriw
Not measured Not measured Not measured 5
Isel (1)
12
Isel (1)
Caerphilly Islwyn Road Wattsville
Not measured 11
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 12
Isel (1)
Not measured Not measured 8
Isel (1)
Cardiff Castle Street
Not measured 33
Isel (1)
Not measured 5
Isel (1)
15
Isel (1)
Cardiff Centre
91
Isel (3)
13
Isel (1)
4
Isel (1)
13
Isel (2)
17
Isel (2)
Cardiff Newport Road
Not measured 27
Isel (1)
Not measured Not measured 13
Isel (1)
Chepstow A48
Not measured 30
Isel (1)
Not measured 9
Isel (1)
13
Isel (1)
Cimla Road / Victoria Gardens
Not measured 43
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
42
Isel (2)
8
Isel (1)
Not measured Not measured 14
Isel (1)
Hafod-yr-ynys Roadside
Not measured 41
Isel (1)
Not measured Not measured Not measured
Marchlyn Mawr
106
Cymedrol (4)
4
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 14
Isel (1)
Not measured Not measured Not measured
Narberth
89
Isel (3)
4
Isel (1)
2
Isel (1)
6
Isel (1)
10
Isel (1)
Newport M4 Junction 25
79
Isel (3)
20
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 15
Isel (1)
Not measured 6
Isel (1)
13
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured 7
Isel (1)
12
Isel (1)
Port Talbot Little Warren
Not measured Not measured Not measured 7
Isel (1)
22
Isel (2)
Port Talbot Margam
88
Isel (3)
35
Isel (1)
2
Isel (1)
8
Isel (1)
17
Isel (2)
Port Talbot Prince Street 2
Not measured Not measured Not measured 6
Isel (1)
32
Isel (2)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured Not measured
Rhondda Mountain Ash
Not measured 43
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 28
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 4
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
84
Isel (3)
89
Isel (2)
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 35
Isel (1)
Not measured 7
Isel (1)
13
Isel (1)
Swansea St Thomas DOAS
77
Isel (3)
18
Isel (1)
9
Isel (1)
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 Not measured Not measured Not measured Not measured
Wrexham Chirk
Not measured 12
Isel (1)
Not measured 4
Isel (1)
10
Isel (1)
Wrexham Chirk Community Hospital
Not measured 28
Isel (1)
Not measured No Data No Data