Lefelau Presennol

Dangosir y lefelau presennol yn y tabl isod – yn dangos crynodiadau a, lle’n berthnasol, y mynegai a’r bandiau cyfatebol.

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
Anglesey Brynteg
Updated: 24/01/2020 11:00
Not measured Not measured Not measured 1
Isel (1)
4
Isel (1)
Anglesey Llynfaes
Updated: 24/01/2020 11:00
Not measured Not measured Not measured 3
Isel (1)
25
Isel (2)
Anglesey Penhesgyn 3
Updated: 24/01/2020 11:00
Not measured Not measured Not measured 2
Isel (1)
3
Isel (1)
Aston Hill
Updated: 24/01/2020 11:00
46
Isel (2)
2
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Updated: 24/01/2020 08:00
Not measured 31
Isel (1)
Not measured Not measured 9
Isel (1)
Caerphilly Fochriw
Updated: 24/01/2020 10:00
Not measured Not measured Not measured 4
Isel (1)
5
Isel (1)
Caerphilly Islwyn Road Wattsville
Updated: 24/01/2020 09:00
Not measured 28
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Updated: 24/01/2020 08:00
Not measured 56
Isel (1)
Not measured Not measured 19
Isel (2)
Cardiff Centre
Updated: 24/01/2020 11:00
23
Isel (1)
30
Isel (1)
2
Isel (1)
13
Isel (2)
14
Isel (1)
Cardiff Newport Road
Updated: 24/01/2020 11:00
Not measured 69
Isel (2)
Not measured Not measured 20
Isel (2)
Chepstow A48
Updated: 24/01/2020 11:00
Not measured 47
Isel (1)
Not measured 13
Isel (2)
15
Isel (1)
Cimla Road / Victoria Gardens
Updated: 24/01/2020 07:00
Not measured 19
Isel (1)
Not measured Not measured Not measured
Cwmbran
Updated: 24/01/2020 11:00
32
Isel (1)
14
Isel (1)
Not measured Not measured 5
Isel (1)
Hafod-yr-ynys Roadside
Updated: 24/01/2020 11:00
Not measured 89
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
Updated: 24/01/2020 11:00
52
Isel (2)
2
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Updated: 24/01/2020 10:00
Not measured 61
Isel (1)
Not measured Not measured Not measured
Narberth
Updated: 24/01/2020 11:00
27
Isel (1)
4
Isel (1)
2
Isel (1)
4
Isel (1)
5
Isel (1)
Newport M4 Junction 25
Updated: 24/01/2020 12:00
15
Isel (1)
56
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 24/01/2020 10:00
Not measured No Data Not measured 10
Isel (1)
12
Isel (1)
Port Talbot Dyffryn School
Updated: 24/01/2020 10:00
Not measured Not measured Not measured Not measured 33
Isel (2)
Port Talbot Little Warren
Updated: 24/01/2020 11:00
Not measured Not measured Not measured Not measured 27
Isel (2)
Port Talbot Margam
Updated: 24/01/2020 11:00
15
Isel (1)
23
Isel (1)
1
Isel (1)
24
Isel (3)
28
Isel (2)
Port Talbot Prince Street 2
Updated: 24/01/2020 11:00
Not measured Not measured Not measured 20
Isel (2)
27
Isel (2)
Port Talbot Twll-yn-y-Wal Park
Updated: 24/01/2020 11:00
Not measured Not measured Not measured Not measured 27
Isel (2)
Rhondda Glyncoch Garth Avenue
Updated: 24/01/2020 11:00
Not measured Not measured Not measured Not measured 19
Isel (2)
Rhondda Mountain Ash
Updated: 24/01/2020 08:00
Not measured 69
Isel (2)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 24/01/2020 07:00
Not measured 26
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 24/01/2020 07:00
Not measured 23
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 22/01/2020 13:00
Not measured Not measured Not measured Not measured Not measured
Swansea Hafod DOAS
Updated: 04/01/2020 03:00
22
Isel (1)
59
Isel (1)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Updated: 24/01/2020 11:00
Not measured 51
Isel (1)
Not measured Not measured Not measured
Swansea Morriston Roadside
Updated: 20/01/2020 10:00
Not measured Not measured Not measured Not measured Not measured
Swansea Port Tennant Roadside
Updated: 24/01/2020 11:00
Not measured 42
Isel (1)
Not measured 17
Isel (2)
Not measured
Swansea Roadside
Updated: 24/01/2020 11:00
Not measured 43
Isel (1)
Not measured 9
Isel (1)
16
Isel (1)
Swansea St Thomas DOAS
Updated: 24/01/2020 11:00
38
Isel (2)
50
Isel (1)
3
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Updated: 24/01/2020 09:00
Not measured 62
Isel (1)
Not measured Not measured Not measured
Twynyrodyn
Updated: 02/07/2019 24:00
Not measured Not measured Not measured Not measured Not measured
V Glamorgan Windsor Road Penarth
Updated: 24/01/2020 06:00
23
Isel (1)
21
Isel (1)
Not measured Not measured 18
Isel (2)
Wrexham
Updated: 24/01/2020 10:00
Not measured 25
Isel (1)
16
Isel (1)
9
Isel (1)
12
Isel (1)