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: 25/01/2022 17:00
Not measured Not measured Not measured 13
Isel (2)
25
Isel (2)
Anglesey Llynfaes
Updated: 25/01/2022 17:00
Not measured Not measured Not measured 3
Isel (1)
8
Isel (1)
Anglesey Penhesgyn 3
Updated: 25/01/2022 17:00
Not measured Not measured Not measured 9
Isel (1)
27
Isel (2)
Aston Hill
Updated: 25/01/2022 17:00
43
Isel (2)
7
Isel (1)
Not measured Not measured Not measured
Bridgend Park Street
Updated: 25/01/2022 19:00
Not measured 54
Isel (1)
Not measured Not measured 29
Isel (2)
Caerphilly Blackwood High Street
Updated: 25/01/2022 13:00
Not measured 50
Isel (1)
Not measured Not measured 25
Isel (2)
Caerphilly Fochriw
Updated: 25/01/2022 01:00
Not measured Not measured Not measured Not measured Not measured
Caerphilly Islwyn Road Wattsville
Updated: 25/01/2022 18:00
Not measured 46
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Updated: 25/01/2022 13:00
Not measured 51
Isel (1)
Not measured Not measured 31
Isel (2)
Cardiff Castle Street
Updated: 25/01/2022 18:00
Not measured 69
Isel (2)
Not measured 27
Isel (3)
37
Isel (3)
Cardiff Centre
Updated: 25/01/2022 18:00
26
Isel (1)
39
Isel (1)
3
Isel (1)
27
Isel (3)
30
Isel (2)
Cardiff Newport Road
Updated: 25/01/2022 18:00
Not measured 60
Isel (1)
Not measured Not measured 36
Isel (3)
Chepstow A48
Updated: 25/01/2022 18:00
Not measured 68
Isel (2)
Not measured 26
Isel (3)
34
Isel (3)
Cimla Road / Victoria Gardens
Updated: 25/01/2022 07:00
Not measured 33
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
Updated: 25/01/2022 18:00
26
Isel (1)
37
Isel (1)
Not measured Not measured 17
Isel (2)
Hafod-yr-ynys Roadside
Updated: 25/01/2022 18:00
Not measured 69
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
Updated: 25/01/2022 19:00
61
Isel (2)
1
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Updated: 25/01/2022 10:00
Not measured 44
Isel (1)
Not measured Not measured Not measured
Narberth
Updated: 25/01/2022 18:00
36
Isel (2)
14
Isel (1)
3
Isel (1)
25
Isel (3)
31
Isel (2)
Newport M4 Junction 25
Updated: 25/01/2022 19:00
7
Isel (1)
78
Isel (2)
Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 24/01/2022 09:00
Not measured No Data Not measured 24
Isel (3)
29
Isel (2)
Port Talbot Dyffryn School
Updated: 20/01/2021 22:00
Not measured Not measured Not measured Not measured Not measured
Port Talbot Little Warren
Updated: 19/01/2022 14:00
Not measured Not measured Not measured Not measured Not measured
Port Talbot Margam
Updated: 25/01/2022 18:00
17
Isel (1)
50
Isel (1)
5
Isel (1)
25
Isel (3)
32
Isel (2)
Port Talbot Prince Street 2
Updated: 25/01/2022 18:00
Not measured Not measured Not measured 24
Isel (3)
31
Isel (2)
Port Talbot Twll-yn-y-Wal Park
Updated: 18/03/2021 12:00
Not measured Not measured Not measured Not measured Not measured
Rhondda Glyncoch Garth Avenue
Updated: 25/01/2022 19:00
Not measured Not measured Not measured Not measured 34
Isel (3)
Rhondda Mountain Ash
Updated: 25/01/2022 13:00
Not measured 69
Isel (2)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 25/01/2022 07:00
Not measured 63
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 25/01/2022 18:00
Not measured 50
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 25/01/2022 18:00
10
Isel (1)
52
Isel (1)
Not measured Not measured Not measured
Swansea Hafod DOAS
Updated: 08/01/2022 02:00
Not measured Not measured Not measured Not measured Not measured
Swansea Morfa Road NOX
Updated: 21/01/2022 09:00
Not measured Not measured Not measured Not measured Not measured
Swansea Morriston Roadside
Updated: 19/11/2021 15:00
Not measured Not measured Not measured Not measured Not measured
Swansea Port Tennant Roadside
Updated: 25/01/2022 18:00
Not measured 54
Isel (1)
Not measured 27
Isel (3)
Not measured
Swansea Roadside
Updated: 25/01/2022 18:00
Not measured 55
Isel (1)
Not measured 28
Isel (3)
36
Isel (3)
Swansea St Thomas DOAS
Updated: 25/01/2022 18:00
28
Isel (1)
85
Isel (2)
20
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Updated: 21/01/2022 09:00
Not measured Not measured Not measured Not measured Not measured
Twynyrodyn
Updated: 02/07/2019 24:00
Not measured Not measured Not measured Not measured Not measured
Wrexham
Updated: 25/01/2022 18:00
Not measured 41
Isel (1)
No Data 25
Isel (3)
35
Isel (3)
Wrexham Chirk
Updated: 24/01/2022 09:00
Not measured Not measured Not measured Not measured Not measured
Wrexham Chirk Community Hospital
Updated: 25/01/2022 19:00
Not measured 37
Isel (1)
Not measured 7
Isel (1)
13
Isel (1)