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: 29/03/2020 01:00
Not measured Not measured Not measured 8
Isel (1)
16
Isel (1)
Anglesey Llynfaes
Updated: 29/03/2020 01:00
Not measured Not measured Not measured 8
Isel (1)
14
Isel (1)
Anglesey Penhesgyn 3
Updated: 29/03/2020 01:00
Not measured Not measured Not measured 7
Isel (1)
11
Isel (1)
Aston Hill
Updated: 29/03/2020 02:00
78
Isel (3)
5
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Updated: 28/03/2020 23:00
Not measured 2
Isel (1)
Not measured Not measured 19
Isel (2)
Caerphilly Fochriw
Updated: 29/03/2020 01:00
Not measured Not measured Not measured 12
Isel (2)
21
Isel (2)
Caerphilly Islwyn Road Wattsville
Updated: 28/03/2020 21:00
Not measured 7
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Updated: 28/03/2020 23:00
Not measured 4
Isel (1)
Not measured Not measured 20
Isel (2)
Cardiff Centre
Updated: 29/03/2020 02:00
81
Isel (3)
No Data 2
Isel (1)
10
Isel (1)
18
Isel (2)
Cardiff Newport Road
Updated: 29/03/2020 02:00
Not measured 5
Isel (1)
Not measured Not measured 24
Isel (2)
Chepstow A48
Updated: 29/03/2020 01:00
Not measured 2
Isel (1)
Not measured 17
Isel (2)
25
Isel (2)
Cimla Road / Victoria Gardens
Updated: 28/03/2020 07:00
Not measured 30
Isel (1)
Not measured Not measured Not measured
Cwmbran
Updated: 29/03/2020 02:00
83
Isel (3)
5
Isel (1)
Not measured Not measured 20
Isel (2)
Hafod-yr-ynys Roadside
Updated: 29/03/2020 02:00
Not measured 4
Isel (1)
Not measured Not measured Not measured
Marchlyn Mawr
Updated: 29/03/2020 02:00
85
Isel (3)
3
Isel (1)
Not measured Not measured Not measured
Nantgarw Road
Updated: 29/03/2020 01:00
Not measured 3
Isel (1)
Not measured Not measured Not measured
Narberth
Updated: 29/03/2020 02:00
73
Isel (3)
4
Isel (1)
2
Isel (1)
10
Isel (1)
13
Isel (1)
Newport M4 Junction 25
Updated: 29/03/2020 02:00
74
Isel (3)
3
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 29/03/2020 02:00
Not measured 6
Isel (1)
Not measured 13
Isel (2)
20
Isel (2)
Port Talbot Dyffryn School
Updated: 28/03/2020 24:00
Not measured Not measured Not measured Not measured 31
Isel (2)
Port Talbot Little Warren
Updated: 29/03/2020 01:00
Not measured Not measured Not measured Not measured 19
Isel (2)
Port Talbot Margam
Updated: 29/03/2020 02:00
81
Isel (3)
4
Isel (1)
1
Isel (1)
8
Isel (1)
17
Isel (2)
Port Talbot Prince Street 2
Updated: 29/03/2020 01:00
Not measured Not measured Not measured 11
Isel (1)
17
Isel (2)
Port Talbot Twll-yn-y-Wal Park
Updated: 29/03/2020 01:00
Not measured Not measured Not measured Not measured 16
Isel (1)
Rhondda Glyncoch Garth Avenue
Updated: 29/03/2020 02:00
Not measured Not measured Not measured Not measured 16
Isel (1)
Rhondda Mountain Ash
Updated: 20/03/2020 21:00
Not measured Not measured Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 28/03/2020 07:00
Not measured 14
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 28/03/2020 18:00
Not measured 6
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 27/03/2020 10:00
Not measured Not measured Not measured Not measured Not measured
Swansea Hafod DOAS
Updated: -
77
Isel (3)
13
Isel (1)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Updated: 20/03/2020 10:00
Not measured Not measured Not measured Not measured Not measured
Swansea Morriston Roadside
Updated: -
Not measured Not measured Not measured Not measured Not measured
Swansea Port Tennant Roadside
Updated: 29/03/2020 01:00
Not measured 3
Isel (1)
Not measured 10
Isel (1)
Not measured
Swansea Roadside
Updated: 29/03/2020 02:00
Not measured No Data Not measured No Data 18
Isel (2)
Swansea St Thomas DOAS
Updated: 28/03/2020 23:00
87
Isel (3)
16
Isel (1)
1
Isel (1)
Not measured Not measured
Swansea Station Court High Street
Updated: 28/03/2020 18:00
Not measured Not measured Not measured Not measured Not measured
Twynyrodyn
Updated: -
Not measured Not measured Not measured Not measured Not measured
V Glamorgan Windsor Road Penarth
Updated: 29/03/2020 01:00
69
Isel (3)
8
Isel (1)
Not measured Not measured 22
Isel (2)
Wrexham
Updated: 29/03/2020 02:00
Not measured 5
Isel (1)
12
Isel (1)
10
Isel (1)
17
Isel (2)