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
80
Isel (3)
8
Isel (1)
Not measured Not measured Not measured
Bridgend Park Street
Not measured 54
Isel (1)
Not measured Not measured 17
Isel (2)
Caerphilly Blackwood High Street
Not measured 68
Isel (2)
Not measured Not measured 17
Isel (2)
Caerphilly Fochriw
Not measured Not measured Not measured 7
Isel (1)
12
Isel (1)
Caerphilly Islwyn Road Wattsville
Not measured 38
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 288
Cymedrol (5)
Not measured Not measured 20
Isel (2)
Cardiff Castle Street
Not measured 56
Isel (1)
Not measured 10
Isel (1)
20
Isel (2)
Cardiff Centre
57
Isel (2)
31
Isel (1)
1
Isel (1)
10
Isel (1)
16
Isel (1)
Cardiff Newport Road
Not measured 52
Isel (1)
Not measured Not measured 18
Isel (2)
Chepstow A48
Not measured 51
Isel (1)
Not measured 11
Isel (1)
19
Isel (2)
Cimla Road / Victoria Gardens
Not measured 47
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
79
Isel (3)
28
Isel (1)
Not measured Not measured 17
Isel (2)
Hafod-yr-ynys Hill Roadside
Not measured 47
Isel (1)
Not measured Not measured Not measured
Marchlyn Mawr
No Data 3
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 64
Isel (1)
Not measured Not measured Not measured
Narberth
74
Isel (3)
7
Isel (1)
1
Isel (1)
6
Isel (1)
10
Isel (1)
Newport M4 Junction 25
57
Isel (2)
37
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 29
Isel (1)
Not measured 9
Isel (1)
16
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured 13
Isel (2)
15
Isel (1)
Port Talbot Little Warren
Not measured Not measured Not measured 13
Isel (2)
14
Isel (1)
Port Talbot Margam
71
Isel (3)
19
Isel (1)
6
Isel (1)
12
Isel (2)
22
Isel (2)
Port Talbot Prince Street 2
Not measured Not measured Not measured 8
Isel (1)
23
Isel (2)
Port Talbot Twll-yn-y-Wal Park
Not measured Not measured Not measured Not measured No Data
Rhondda Glyncoch Garth Avenue
Not measured Not measured Not measured 10
Isel (1)
20
Isel (2)
Rhondda Mountain Ash
Not measured 62
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 32
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 42
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
No Data No Data Not measured Not measured Not measured
Swansea Hafod DOAS
74
Isel (3)
61
Isel (1)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Not measured No Data Not measured Not measured Not measured
Swansea Morriston Roadside
No Data No Data Not measured No Data Not measured
Swansea Port Tennant Roadside
Not measured 63
Isel (1)
Not measured 13
Isel (2)
Not measured
Swansea Roadside
Not measured 30
Isel (1)
Not measured 7
Isel (1)
14
Isel (1)
Swansea St Thomas DOAS
80
Isel (3)
54
Isel (1)
9
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Not measured 74
Isel (2)
Not measured Not measured Not measured
Twynyrodyn
Not measured Not measured Not measured No Data No Data
Wrexham
Not measured 28
Isel (1)
5
Isel (1)
6
Isel (1)
10
Isel (1)
Wrexham Chirk
Not measured 24
Isel (1)
Not measured 5
Isel (1)
16
Isel (1)
Wrexham Chirk Community Hospital
Not measured 13
Isel (1)
Not measured 6
Isel (1)
17
Isel (2)