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: 23/01/2022 02:00
Not measured Not measured Not measured 2
Isel (1)
4
Isel (1)
Anglesey Llynfaes
Updated: 23/01/2022 02:00
Not measured Not measured Not measured 1
Isel (1)
1
Isel (1)
Anglesey Penhesgyn 3
Updated: 23/01/2022 01:00
Not measured Not measured Not measured 2
Isel (1)
4
Isel (1)
Aston Hill
Updated: 23/01/2022 02:00
74
Isel (3)
1
Isel (1)
Not measured Not measured Not measured
Bridgend Park Street
Updated: 22/01/2022 20:00
Not measured Not measured Not measured Not measured Not measured
Caerphilly Blackwood High Street
Updated: 22/01/2022 23:00
Not measured 43
Isel (1)
Not measured Not measured 16
Isel (1)
Caerphilly Fochriw
Updated: 21/01/2022 24:00
Not measured Not measured Not measured Not measured Not measured
Caerphilly Islwyn Road Wattsville
Updated: 22/01/2022 21:00
Not measured 26
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Updated: 22/01/2022 23:00
Not measured 65
Isel (1)
Not measured Not measured 20
Isel (2)
Cardiff Castle Street
Updated: 23/01/2022 03:00
Not measured 54
Isel (1)
Not measured 13
Isel (2)
20
Isel (2)
Cardiff Centre
Updated: 23/01/2022 02:00
29
Isel (1)
5
Isel (1)
2
Isel (1)
13
Isel (2)
15
Isel (1)
Cardiff Newport Road
Updated: 23/01/2022 02:00
Not measured 29
Isel (1)
Not measured Not measured 20
Isel (2)
Chepstow A48
Updated: 23/01/2022 02:00
Not measured 14
Isel (1)
Not measured 13
Isel (2)
20
Isel (2)
Cimla Road / Victoria Gardens
Updated: 22/01/2022 07:00
Not measured 35
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
Updated: 23/01/2022 02:00
28
Isel (1)
10
Isel (1)
Not measured Not measured 18
Isel (2)
Hafod-yr-ynys Roadside
Updated: 23/01/2022 02:00
Not measured 32
Isel (1)
Not measured Not measured Not measured
Marchlyn Mawr
Updated: 22/01/2022 23:00
77
Isel (3)
1
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Updated: 23/01/2022 01:00
Not measured 27
Isel (1)
Not measured Not measured Not measured
Narberth
Updated: 23/01/2022 02:00
77
Isel (3)
1
Isel (1)
3
Isel (1)
5
Isel (1)
7
Isel (1)
Newport M4 Junction 25
Updated: 23/01/2022 03:00
3
Isel (1)
37
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 23/01/2022 02:00
Not measured 39
Isel (1)
Not measured 15
Isel (2)
18
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: 23/01/2022 02:00
61
Isel (2)
9
Isel (1)
2
Isel (1)
8
Isel (1)
12
Isel (1)
Port Talbot Prince Street 2
Updated: 23/01/2022 01:00
Not measured Not measured Not measured 8
Isel (1)
13
Isel (1)
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: 23/01/2022 03:00
Not measured Not measured Not measured Not measured 12
Isel (1)
Rhondda Mountain Ash
Updated: 22/01/2022 08:00
Not measured Not measured Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 22/01/2022 07:00
Not measured 35
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 22/01/2022 20:00
Not measured 53
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 21/01/2022 10:00
Not measured Not measured 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: 21/01/2022 10:00
Not measured Not measured Not measured Not measured Not measured
Swansea Roadside
Updated: 22/01/2022 08:00
Not measured Not measured Not measured Not measured Not measured
Swansea St Thomas DOAS
Updated: 21/01/2022 11:00
Not measured Not measured Not measured 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: 23/01/2022 02:00
Not measured 4
Isel (1)
3
Isel (1)
5
Isel (1)
7
Isel (1)
Wrexham Chirk
Updated: 23/01/2022 03:00
Not measured 13
Isel (1)
Not measured No Data No Data
Wrexham Chirk Community Hospital
Updated: 23/01/2022 03:00
Not measured 8
Isel (1)
Not measured 2
Isel (1)
4
Isel (1)