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
Aston Hill
Updated: 22/07/2024 08:00
45
Low (2)
0
Low (1)
Not measured Not measured Not measured
Bridgend Park Street
Updated: 22/07/2024 08:00
Not measured 12
Low (1)
Not measured Not measured 5
Low (1)
Caerphilly Blackwood High Street
Updated: 22/07/2024 07:00
Not measured 4
Low (1)
Not measured Not measured 8
Low (1)
Caerphilly Fochriw
Updated: 22/07/2024 07:00
Not measured Not measured Not measured 2
Low (1)
5
Low (1)
Caerphilly Islwyn Road Wattsville
Updated: 22/07/2024 08:00
Not measured 7
Low (1)
Not measured Not measured Not measured
Caerphilly White Street
Updated: 22/07/2024 07:00
Not measured 3
Low (1)
Not measured Not measured 9
Low (1)
Cardiff Castle Street
Updated: 22/07/2024 08:00
Not measured 13
Low (1)
Not measured 2
Low (1)
8
Low (1)
Cardiff Centre
Updated: 22/07/2024 08:00
43
Low (2)
6
Low (1)
1
Low (1)
3
Low (1)
6
Low (1)
Cardiff Newport Road
Updated: 22/07/2024 08:00
Not measured 4
Low (1)
Not measured Not measured 7
Low (1)
Chepstow A48
Updated: 22/07/2024 08:00
Not measured 19
Low (1)
Not measured 3
Low (1)
9
Low (1)
Cimla Road / Victoria Gardens
Updated: 28/06/2024 09:00
Not measured No data Not measured Not measured Not measured
Cwmbran Crownbridge
Updated: 22/07/2024 08:00
47
Low (2)
2
Low (1)
Not measured Not measured 9
Low (1)
Hafod-yr-ynys Hill Roadside
Updated: 22/07/2024 08:00
Not measured 21
Low (1)
Not measured Not measured Not measured
Marchlyn Mawr
Updated: 22/07/2024 08:00
No data 0
Low (1)
Not measured Not measured Not measured
Nantgarw Road
Updated: 22/07/2024 04:00
Not measured 2
Low (1)
Not measured Not measured Not measured
Narberth
Updated: 22/07/2024 08:00
37
Low (2)
2
Low (1)
2
Low (1)
2
Low (1)
5
Low (1)
Newport M4 Junction 25
Updated: 22/07/2024 08:00
30
Low (1)
29
Low (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 22/07/2024 08:00
Not measured 4
Low (1)
Not measured 3
Low (1)
6
Low (1)
Port Talbot Dyffryn School
Updated: 22/07/2024 08:00
Not measured Not measured Not measured 3
Low (1)
12
Low (1)
Port Talbot Little Warren
Updated: 22/07/2024 08:00
Not measured Not measured Not measured 2
Low (1)
No data
Port Talbot Margam
Updated: 22/07/2024 08:00
43
Low (2)
9
Low (1)
1
Low (1)
6
Low (1)
21
Low (2)
Port Talbot Prince Street 2
Updated: 22/07/2024 08:00
Not measured Not measured Not measured 4
Low (1)
18
Low (2)
Port Talbot Twll-yn-y-Wal Park
Updated: 18/03/2021 12:00
Not measured Not measured Not measured Not measured No data
Rhondda Glyncoch Garth Avenue
Updated: 22/07/2024 08:00
Not measured Not measured Not measured 2
Low (1)
5
Low (1)
Rhondda Mountain Ash
Updated: 22/07/2024 07:00
Not measured 24
Low (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 21/07/2024 17:00
Not measured 9
Low (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 19/07/2024 17:00
Not measured No data Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 09/07/2024 09:00
No data No data Not measured Not measured Not measured
Swansea Hafod DOAS
Updated: 08/07/2024 24:00
No data No data Not measured Not measured Not measured
Swansea Morfa Road NOX
Updated: 09/07/2024 09:00
Not measured No data Not measured Not measured Not measured
Swansea Morriston Roadside
Updated: 05/07/2024 13:00
No data No data Not measured No data Not measured
Swansea Port Tennant Roadside
Updated: 09/07/2024 06:00
Not measured No data Not measured No data Not measured
Swansea Roadside
Updated: 22/07/2024 08:00
Not measured 9
Low (1)
Not measured 3
Low (1)
6
Low (1)
Swansea St Thomas DOAS
Updated: 09/07/2024 10:00
No data No data No data Not measured Not measured
Swansea Station Court High Street
Updated: 09/07/2024 07:00
Not measured No data Not measured Not measured Not measured
Wrexham
Updated: 22/07/2024 08:00
Not measured 16
Low (1)
4
Low (1)
2
Low (1)
4
Low (1)
Wrexham Chirk
Updated: 30/05/2024 11:00
Not measured No data Not measured 1
Low (1)
8
Low (1)
Wrexham Chirk Community Hospital
Updated: 22/07/2024 08:00
Not measured 13
Low (1)
Not measured 2
Low (1)
6
Low (1)