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: 09/06/2023 06:00
70
Isel (3)
3
Isel (1)
Not measured Not measured Not measured
Bridgend Park Street
Updated: 09/06/2023 06:00
Not measured 3
Isel (1)
Not measured Not measured 19
Isel (2)
Caerphilly Blackwood High Street
Updated: 09/06/2023 03:00
Not measured 2
Isel (1)
Not measured Not measured 23
Isel (2)
Caerphilly Fochriw
Updated: 09/06/2023 05:00
Not measured Not measured Not measured 9
Isel (1)
17
Isel (2)
Caerphilly Islwyn Road Wattsville
Updated: 05/06/2023 20:00
Not measured Not measured Not measured Not measured Not measured
Caerphilly White Street
Updated: 08/06/2023 22:00
Not measured Not measured Not measured Not measured Not measured
Cardiff Castle Street
Updated: 09/06/2023 06:00
Not measured 8
Isel (1)
Not measured No Data 23
Isel (2)
Cardiff Centre
Updated: 09/06/2023 06:00
71
Isel (3)
7
Isel (1)
2
Isel (1)
15
Isel (2)
24
Isel (2)
Cardiff Newport Road
Updated: 09/06/2023 06:00
Not measured 6
Isel (1)
Not measured Not measured 20
Isel (2)
Chepstow A48
Updated: 09/06/2023 06:00
Not measured 13
Isel (1)
Not measured 6
Isel (1)
18
Isel (2)
Cimla Road / Victoria Gardens
Updated: 09/06/2023 06:00
Not measured 10
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
Updated: 09/06/2023 06:00
38
Isel (2)
3
Isel (1)
Not measured Not measured 20
Isel (2)
Hafod-yr-ynys Roadside
Updated: 09/06/2023 06:00
Not measured 54
Isel (1)
Not measured Not measured Not measured
Marchlyn Mawr
Updated: 09/06/2023 06:00
112
Cymedrol (4)
2
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Updated: 09/06/2023 04:00
Not measured 2
Isel (1)
Not measured Not measured Not measured
Narberth
Updated: 09/06/2023 06:00
75
Isel (3)
3
Isel (1)
2
Isel (1)
11
Isel (1)
21
Isel (2)
Newport M4 Junction 25
Updated: 09/06/2023 07:00
65
Isel (2)
6
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 09/06/2023 06:00
Not measured 10
Isel (1)
Not measured 9
Isel (1)
21
Isel (2)
Port Talbot Dyffryn School
Updated: 09/06/2023 06:00
Not measured Not measured Not measured 14
Isel (2)
23
Isel (2)
Port Talbot Little Warren
Updated: 09/06/2023 06:00
Not measured Not measured Not measured 12
Isel (2)
37
Isel (3)
Port Talbot Margam
Updated: 09/06/2023 06:00
93
Isel (3)
3
Isel (1)
2
Isel (1)
14
Isel (2)
28
Isel (2)
Port Talbot Prince Street 2
Updated: 09/06/2023 06:00
Not measured Not measured Not measured 12
Isel (2)
32
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 Mountain Ash
Updated: 09/06/2023 07:00
Not measured 50
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 09/06/2023 06:00
Not measured 8
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 09/06/2023 06:00
Not measured 3
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 09/06/2023 06:00
92
Isel (3)
7
Isel (1)
Not measured Not measured Not measured
Swansea Hafod DOAS
Updated: 07/06/2023 08:00
Not measured Not measured Not measured Not measured Not measured
Swansea Morfa Road NOX
Updated: 09/06/2023 01:00
Not measured 5
Isel (1)
Not measured Not measured Not measured
Swansea Morriston Roadside
Updated: 19/05/2023 11:00
Not measured Not measured Not measured Not measured Not measured
Swansea Port Tennant Roadside
Updated: 01/06/2023 17:00
Not measured Not measured Not measured Not measured Not measured
Swansea Roadside
Updated: 09/06/2023 06:00
Not measured 22
Isel (1)
Not measured 12
Isel (2)
22
Isel (2)
Swansea St Thomas DOAS
Updated: 07/06/2023 08:00
Not measured Not measured Not measured Not measured Not measured
Swansea Station Court High Street
Updated: 08/06/2023 06:00
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: 09/06/2023 05:00
Not measured 12
Isel (1)
3
Isel (1)
8
Isel (1)
15
Isel (1)
Wrexham Chirk
Updated: 09/06/2023 06:00
Not measured 7
Isel (1)
Not measured 3
Isel (1)
11
Isel (1)
Wrexham Chirk Community Hospital
Updated: 09/06/2023 06:00
Not measured 19
Isel (1)
Not measured No Data No Data