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
74
Isel (3)
7
Isel (1)
Not measured Not measured Not measured
Bridgend Park Street
Not measured 29
Isel (1)
Not measured Not measured No Data
Caerphilly Blackwood High Street
Not measured 31
Isel (1)
Not measured Not measured No Data
Caerphilly Fochriw
Not measured Not measured Not measured No Data No Data
Caerphilly Islwyn Road Wattsville
Not measured 21
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 26
Isel (1)
Not measured Not measured No Data
Cardiff Castle Street
Not measured 54
Isel (1)
Not measured No Data No Data
Cardiff Centre
65
Isel (2)
43
Isel (1)
4
Isel (1)
11
Isel (1)
11
Isel (1)
Cardiff Newport Road
Not measured 56
Isel (1)
Not measured Not measured 12
Isel (1)
Chepstow A48
Not measured 76
Isel (2)
Not measured No Data 10
Isel (1)
Cimla Road / Victoria Gardens
Not measured 49
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
57
Isel (2)
28
Isel (1)
Not measured Not measured No Data
Hafod-yr-ynys Hill Roadside
Not measured 66
Isel (1)
Not measured Not measured Not measured
Marchlyn Mawr
No Data 1
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured No Data Not measured Not measured Not measured
Narberth
70
Isel (3)
5
Isel (1)
2
Isel (1)
2
Isel (1)
5
Isel (1)
Newport M4 Junction 25
No Data 67
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 46
Isel (1)
Not measured 8
Isel (1)
10
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured No Data No Data
Port Talbot Little Warren
Not measured Not measured Not measured No Data No Data
Port Talbot Margam
66
Isel (2)
36
Isel (1)
33
Isel (1)
5
Isel (1)
8
Isel (1)
Port Talbot Prince Street 2
Not measured Not measured Not measured No Data No Data
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 No Data No Data
Rhondda Mountain Ash
Not measured No Data Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 61
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured No Data Not measured Not measured Not measured
Swansea Cwm Level Park
No Data No Data Not measured Not measured Not measured
Swansea Hafod DOAS
45
Isel (2)
116
Isel (2)
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 No Data Not measured No Data Not measured
Swansea Roadside
Not measured 68
Isel (2)
Not measured 6
Isel (1)
9
Isel (1)
Swansea St Thomas DOAS
47
Isel (2)
80
Isel (2)
7
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Not measured No Data Not measured Not measured Not measured
Twynyrodyn
Not measured Not measured Not measured No Data No Data
Wrexham
Not measured 30
Isel (1)
5
Isel (1)
8
Isel (1)
10
Isel (1)
Wrexham Chirk
Not measured 16
Isel (1)
Not measured No Data No Data
Wrexham Chirk Community Hospital
Not measured No Data Not measured No Data No Data