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: 18/06/2019 24:00
Not measured Not measured Not measured 6
Isel (1)
22
Isel (2)
Anglesey Llynfaes
Updated: 18/06/2019 24:00
Not measured Not measured Not measured 12
Isel (2)
27
Isel (2)
Anglesey Penhesgyn 3
Updated: 18/06/2019 24:00
Not measured Not measured Not measured 7
Isel (1)
13
Isel (1)
Aston Hill
Updated: 19/06/2019 01:00
51
Isel (2)
1
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Updated: 18/06/2019 22:00
Not measured 22
Isel (1)
Not measured Not measured 11
Isel (1)
Caerphilly Fochriw
Updated: 18/06/2019 24:00
Not measured Not measured Not measured 5
Isel (1)
7
Isel (1)
Caerphilly Islwyn Road Wattsville
Updated: 18/06/2019 20:00
Not measured 10
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Updated: 18/06/2019 22:00
Not measured 40
Isel (1)
Not measured Not measured 15
Isel (1)
Cardiff Centre
Updated: 19/06/2019 01:00
16
Isel (1)
20
Isel (1)
2
Isel (1)
13
Isel (2)
15
Isel (1)
Cardiff Newport Road
Updated: 19/06/2019 01:00
Not measured 34
Isel (1)
Not measured Not measured 18
Isel (2)
Chepstow A48
Updated: 18/06/2019 24:00
Not measured 7
Isel (1)
Not measured 11
Isel (1)
16
Isel (1)
Cimla Road / Victoria Gardens
Updated: 18/06/2019 06:00
Not measured 32
Isel (1)
Not measured Not measured Not measured
Cwmbran
Updated: 18/06/2019 24:00
27
Isel (1)
9
Isel (1)
Not measured Not measured 12
Isel (1)
Hafod-yr-ynys Roadside
Updated: 18/06/2019 24:00
Not measured 28
Isel (1)
Not measured Not measured Not measured
Marchlyn Mawr
Updated: 25/11/2018 03:00
No Data No Data Not measured Not measured Not measured
Nantgarw Road
Updated: 18/06/2019 24:00
Not measured 6
Isel (1)
Not measured Not measured Not measured
Narberth
Updated: 19/06/2019 01:00
16
Isel (1)
3
Isel (1)
5
Isel (1)
5
Isel (1)
8
Isel (1)
Newport M4 Junction 25
Updated: 19/06/2019 01:00
8
Isel (1)
15
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 18/06/2019 24:00
Not measured 19
Isel (1)
Not measured 8
Isel (1)
13
Isel (1)
Port Talbot Dyffryn School
Updated: 18/06/2019 23:00
Not measured Not measured Not measured Not measured 13
Isel (1)
Port Talbot Little Warren
Updated: 18/06/2019 24:00
Not measured Not measured Not measured Not measured 14
Isel (1)
Port Talbot Margam
Updated: 19/06/2019 01:00
44
Isel (2)
7
Isel (1)
1
Isel (1)
9
Isel (1)
15
Isel (1)
Port Talbot Prince Street 2
Updated: 18/06/2019 24:00
Not measured Not measured Not measured 6
Isel (1)
13
Isel (1)
Port Talbot Twll-yn-y-Wal Park
Updated: 18/06/2019 24:00
Not measured Not measured Not measured Not measured 10
Isel (1)
Rhondda Glyncoch Garth Avenue
Updated: 12/10/2018 01:00
Not measured Not measured Not measured Not measured No Data
Rhondda Mountain Ash
Updated: 18/06/2019 20:00
Not measured 44
Isel (1)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 18/06/2019 06:00
Not measured 29
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 18/06/2019 19:00
Not measured 31
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 18/06/2019 16:00
No Data No Data Not measured Not measured Not measured
Swansea Hafod DOAS
Updated: 18/06/2019 15:00
No Data No Data Not measured Not measured Not measured
Swansea Morfa Road NOX
Updated: 18/06/2019 15:00
Not measured No Data Not measured Not measured Not measured
Swansea Morriston Roadside
Updated: 17/06/2019 07:00
No Data No Data Not measured No Data Not measured
Swansea Roadside
Updated: 19/06/2019 01:00
Not measured 10
Isel (1)
Not measured 13
Isel (2)
13
Isel (1)
Swansea St Thomas DOAS
Updated: 18/06/2019 15:00
No Data No Data No Data Not measured Not measured
Swansea Station Court High Street
Updated: 18/06/2019 15:00
Not measured No Data Not measured Not measured Not measured
Twynyrodyn
Updated: 31/03/2019 24:00
Not measured Not measured Not measured No Data No Data
V Glamorgan Windsor Road Penarth
Updated: 18/06/2019 24:00
No Data 22
Isel (1)
Not measured Not measured 20
Isel (2)
Wrexham
Updated: 18/06/2019 24:00
Not measured 9
Isel (1)
1
Isel (1)
5
Isel (1)
8
Isel (1)