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: -
Not measured Not measured Not measured Not measured Not measured
Anglesey Llynfaes
Updated: 26/02/2021 19:00
Not measured Not measured Not measured 14
Isel (2)
25
Isel (2)
Anglesey Penhesgyn 3
Updated: 26/02/2021 19:00
Not measured Not measured Not measured 9
Isel (1)
15
Isel (1)
Aston Hill
Updated: 26/02/2021 20:00
77
Isel (3)
No Data Not measured Not measured Not measured
Bridgend Park Street
Updated: 26/02/2021 20:00
Not measured 72
Isel (2)
Not measured Not measured 23
Isel (2)
Caerphilly Blackwood High Street
Updated: 26/02/2021 19:00
Not measured 69
Isel (2)
Not measured Not measured 14
Isel (1)
Caerphilly Fochriw
Updated: 20/02/2021 04:00
Not measured Not measured Not measured Not measured Not measured
Caerphilly Islwyn Road Wattsville
Updated: 26/02/2021 18:00
Not measured 66
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Updated: 26/02/2021 19:00
Not measured 57
Isel (1)
Not measured Not measured 24
Isel (2)
Cardiff Castle Street
Updated: 26/02/2021 20:00
Not measured 51
Isel (1)
Not measured 9
Isel (1)
21
Isel (2)
Cardiff Centre
Updated: 26/02/2021 20:00
63
Isel (2)
33
Isel (1)
2
Isel (1)
9
Isel (1)
14
Isel (1)
Cardiff Newport Road
Updated: 26/02/2021 20:00
Not measured 52
Isel (1)
Not measured Not measured 23
Isel (2)
Chepstow A48
Updated: 26/02/2021 20:00
Not measured 64
Isel (1)
Not measured 12
Isel (2)
24
Isel (2)
Cimla Road / Victoria Gardens
Updated: 26/02/2021 07:00
Not measured 18
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
Updated: 26/02/2021 20:00
57
Isel (2)
53
Isel (1)
Not measured Not measured 21
Isel (2)
Hafod-yr-ynys Roadside
Updated: 26/02/2021 20:00
Not measured 69
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
Updated: 26/02/2021 20:00
77
Isel (3)
No Data Not measured Not measured Not measured
Nantgarw Road
Updated: 26/02/2021 10:00
Not measured 33
Isel (1)
Not measured Not measured Not measured
Narberth
Updated: 26/02/2021 20:00
63
Isel (2)
6
Isel (1)
1
Isel (1)
5
Isel (1)
11
Isel (1)
Newport M4 Junction 25
Updated: 26/02/2021 21:00
22
Isel (1)
60
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 26/02/2021 20:00
Not measured 68
Isel (2)
Not measured 8
Isel (1)
15
Isel (1)
Port Talbot Dyffryn School
Updated: -
Not measured Not measured Not measured Not measured Not measured
Port Talbot Little Warren
Updated: 26/02/2021 20:00
Not measured Not measured Not measured Not measured 13
Isel (1)
Port Talbot Margam
Updated: 26/02/2021 20:00
52
Isel (2)
38
Isel (1)
1
Isel (1)
7
Isel (1)
17
Isel (2)
Port Talbot Prince Street 2
Updated: 26/02/2021 20:00
Not measured Not measured Not measured 8
Isel (1)
20
Isel (2)
Port Talbot Twll-yn-y-Wal Park
Updated: 26/02/2021 20:00
Not measured Not measured Not measured Not measured 24
Isel (2)
Rhondda Glyncoch Garth Avenue
Updated: 26/02/2021 20:00
Not measured Not measured Not measured Not measured 11
Isel (1)
Rhondda Mountain Ash
Updated: 26/02/2021 21:00
Not measured 58
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 26/02/2021 07:00
Not measured 25
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 26/02/2021 18:00
Not measured 33
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 26/02/2021 12:00
Not measured Not measured Not measured Not measured Not measured
Swansea Hafod DOAS
Updated: 22/02/2021 15:00
Not measured Not measured Not measured Not measured Not measured
Swansea Morfa Road NOX
Updated: 26/02/2021 12:00
Not measured Not measured Not measured Not measured Not measured
Swansea Morriston Roadside
Updated: 19/02/2021 09:00
Not measured Not measured Not measured Not measured Not measured
Swansea Port Tennant Roadside
Updated: 25/02/2021 15:00
Not measured Not measured Not measured Not measured Not measured
Swansea Roadside
Updated: 26/02/2021 20:00
Not measured 79
Isel (2)
Not measured 13
Isel (2)
27
Isel (2)
Swansea St Thomas DOAS
Updated: -
Not measured Not measured Not measured Not measured Not measured
Swansea Station Court High Street
Updated: 25/02/2021 15:00
Not measured Not measured Not measured Not measured Not measured
Twynyrodyn
Updated: -
Not measured Not measured Not measured Not measured Not measured
Wrexham
Updated: 26/02/2021 20:00
Not measured 21
Isel (1)
5
Isel (1)
5
Isel (1)
8
Isel (1)
Wrexham Chirk
Updated: 26/02/2021 20:00
Not measured 39
Isel (1)
Not measured No Data No Data