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
92
Isel (3)
5
Isel (1)
Not measured Not measured Not measured
Bridgend Park Street
Not measured 26
Isel (1)
Not measured Not measured 10
Isel (1)
Caerphilly Blackwood High Street
Not measured 25
Isel (1)
Not measured Not measured 8
Isel (1)
Caerphilly Fochriw
Not measured Not measured Not measured 6
Isel (1)
No Data
Caerphilly Islwyn Road Wattsville
Not measured 22
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Not measured 53
Isel (1)
Not measured Not measured 6
Isel (1)
Cardiff Castle Street
Not measured 55
Isel (1)
Not measured 7
Isel (1)
13
Isel (1)
Cardiff Centre
68
Isel (3)
39
Isel (1)
5
Isel (1)
9
Isel (1)
10
Isel (1)
Cardiff Newport Road
Not measured 38
Isel (1)
Not measured Not measured 13
Isel (1)
Chepstow A48
Not measured 42
Isel (1)
Not measured 10
Isel (1)
14
Isel (1)
Cimla Road / Victoria Gardens
Not measured 30
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
84
Isel (3)
11
Isel (1)
Not measured Not measured 14
Isel (1)
Hafod-yr-ynys Hill Roadside
Not measured 34
Isel (1)
Not measured Not measured Not measured
Marchlyn Mawr
No Data 2
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Not measured 19
Isel (1)
Not measured Not measured Not measured
Narberth
82
Isel (3)
3
Isel (1)
1
Isel (1)
6
Isel (1)
9
Isel (1)
Newport M4 Junction 25
50
Isel (2)
106
Isel (2)
Not measured Not measured Not measured
Newport St Julians Comp School
Not measured 33
Isel (1)
Not measured 8
Isel (1)
12
Isel (1)
Port Talbot Dyffryn School
Not measured Not measured Not measured 9
Isel (1)
14
Isel (1)
Port Talbot Little Warren
Not measured Not measured Not measured 8
Isel (1)
8
Isel (1)
Port Talbot Margam
83
Isel (3)
29
Isel (1)
36
Isel (1)
8
Isel (1)
21
Isel (2)
Port Talbot Prince Street 2
Not measured Not measured Not measured 8
Isel (1)
19
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 6
Isel (1)
9
Isel (1)
Rhondda Mountain Ash
Not measured 54
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Not measured 38
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Not measured 32
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
79
Isel (3)
49
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 No Data Not measured No Data Not measured
Swansea Roadside
Not measured 30
Isel (1)
Not measured 7
Isel (1)
10
Isel (1)
Swansea St Thomas DOAS
87
Isel (3)
54
Isel (1)
6
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 33
Isel (1)
3
Isel (1)
7
Isel (1)
10
Isel (1)
Wrexham Chirk
Not measured 27
Isel (1)
Not measured 2
Isel (1)
8
Isel (1)
Wrexham Chirk Community Hospital
Not measured 16
Isel (1)
Not measured 3
Isel (1)
8
Isel (1)