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: 04/12/2020 06:00
Not measured Not measured Not measured 2
Isel (1)
9
Isel (1)
Anglesey Llynfaes
Updated: -
Not measured Not measured Not measured Not measured Not measured
Anglesey Penhesgyn 3
Updated: -
Not measured Not measured Not measured Not measured Not measured
Aston Hill
Updated: 04/12/2020 09:00
61
Isel (2)
2
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Updated: 04/12/2020 08:00
Not measured 16
Isel (1)
Not measured Not measured 7
Isel (1)
Caerphilly Fochriw
Updated: 04/12/2020 01:00
Not measured Not measured Not measured 1
Isel (1)
No Data
Caerphilly Islwyn Road Wattsville
Updated: 04/12/2020 09:00
Not measured 53
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Updated: 04/12/2020 08:00
Not measured 31
Isel (1)
Not measured Not measured No Data
Cardiff Castle Street
Updated: 04/12/2020 09:00
Not measured 41
Isel (1)
Not measured 5
Isel (1)
7
Isel (1)
Cardiff Centre
Updated: 04/12/2020 09:00
49
Isel (2)
25
Isel (1)
2
Isel (1)
3
Isel (1)
4
Isel (1)
Cardiff Newport Road
Updated: 04/12/2020 08:00
Not measured 25
Isel (1)
Not measured Not measured 7
Isel (1)
Chepstow A48
Updated: 04/12/2020 09:00
Not measured 77
Isel (2)
Not measured 5
Isel (1)
7
Isel (1)
Cimla Road / Victoria Gardens
Updated: 04/12/2020 07:00
Not measured 39
Isel (1)
Not measured Not measured Not measured
Cwmbran Crownbridge
Updated: 04/12/2020 09:00
63
Isel (2)
6
Isel (1)
Not measured Not measured 5
Isel (1)
Hafod-yr-ynys Roadside
Updated: 04/12/2020 09:00
Not measured 121
Isel (2)
Not measured Not measured Not measured
Marchlyn Mawr
Updated: 04/12/2020 09:00
62
Isel (2)
4
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Updated: 04/12/2020 05:00
Not measured 2
Isel (1)
Not measured Not measured Not measured
Narberth
Updated: 04/12/2020 09:00
69
Isel (3)
2
Isel (1)
2
Isel (1)
1
Isel (1)
3
Isel (1)
Newport M4 Junction 25
Updated: 04/12/2020 05:00
42
Isel (2)
No Data Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 04/12/2020 09:00
Not measured 27
Isel (1)
Not measured 2
Isel (1)
3
Isel (1)
Port Talbot Dyffryn School
Updated: 04/12/2020 10:00
Not measured Not measured Not measured Not measured 5
Isel (1)
Port Talbot Little Warren
Updated: 04/12/2020 10:00
Not measured Not measured Not measured Not measured 4
Isel (1)
Port Talbot Margam
Updated: 04/12/2020 08:00
50
Isel (2)
22
Isel (1)
2
Isel (1)
3
Isel (1)
7
Isel (1)
Port Talbot Prince Street 2
Updated: 04/12/2020 09:00
Not measured Not measured Not measured 3
Isel (1)
6
Isel (1)
Port Talbot Twll-yn-y-Wal Park
Updated: 04/12/2020 10:00
Not measured Not measured Not measured Not measured 6
Isel (1)
Rhondda Glyncoch Garth Avenue
Updated: 04/12/2020 10:00
Not measured Not measured Not measured Not measured 3
Isel (1)
Rhondda Mountain Ash
Updated: 04/12/2020 08:00
Not measured 45
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 04/12/2020 07:00
Not measured 24
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 04/12/2020 07:00
Not measured 14
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 04/12/2020 09:00
No Data 22
Isel (1)
Not measured Not measured Not measured
Swansea Hafod DOAS
Updated: 04/12/2020 09:00
59
Isel (2)
42
Isel (1)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Updated: 04/12/2020 09:00
Not measured 48
Isel (1)
Not measured Not measured Not measured
Swansea Morriston Roadside
Updated: 26/11/2020 07:00
Not measured Not measured Not measured Not measured Not measured
Swansea Port Tennant Roadside
Updated: 04/12/2020 09:00
Not measured 70
Isel (2)
Not measured 4
Isel (1)
Not measured
Swansea Roadside
Updated: 04/12/2020 09:00
Not measured 36
Isel (1)
Not measured 4
Isel (1)
7
Isel (1)
Swansea St Thomas DOAS
Updated: 04/12/2020 09:00
51
Isel (2)
49
Isel (1)
1
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Updated: 04/12/2020 09:00
Not measured 115
Isel (2)
Not measured Not measured Not measured
Twynyrodyn
Updated: -
Not measured Not measured Not measured Not measured Not measured
V Glamorgan Windsor Road Penarth
Updated: 04/12/2020 06:00
38
Isel (2)
16
Isel (1)
Not measured Not measured 7
Isel (1)
Wrexham
Updated: 04/12/2020 09:00
Not measured 16
Isel (1)
9
Isel (1)
5
Isel (1)
7
Isel (1)
Wrexham Chirk
Updated: 04/12/2020 10:00
Not measured 11
Isel (1)
Not measured No Data 2
Isel (1)