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: 23/02/2019 11:00
Not measured Not measured Not measured 11
Isel (1)
32
Isel (2)
Anglesey Felin Cafnan
Updated: 23/02/2019 11:00
Not measured Not measured Not measured 7
Isel (1)
24
Isel (2)
Anglesey Llynfaes
Updated: 23/02/2019 11:00
Not measured Not measured Not measured 15
Isel (2)
33
Isel (2)
Anglesey Penhesgyn 3
Updated: 23/02/2019 11:00
Not measured Not measured Not measured 12
Isel (2)
28
Isel (2)
Aston Hill
Updated: 23/02/2019 11:00
61
Isel (2)
7
Isel (1)
Not measured Not measured Not measured
Caerphilly Blackwood High Street
Updated: 23/02/2019 08:00
Not measured 30
Isel (1)
Not measured Not measured 30
Isel (2)
Caerphilly Fochriw
Updated: 23/02/2019 10:00
Not measured Not measured Not measured 23
Isel (2)
27
Isel (2)
Caerphilly Islwyn Road Wattsville
Updated: 23/02/2019 12:00
Not measured 33
Isel (1)
Not measured Not measured Not measured
Caerphilly White Street
Updated: 23/02/2019 08:00
Not measured 56
Isel (1)
Not measured Not measured 35
Isel (3)
Cardiff Centre
Updated: 23/02/2019 11:00
12
Isel (1)
41
Isel (1)
4
Isel (1)
50
Cymedrol (6)
59
Cymedrol (5)
Cardiff Newport Road
Updated: 23/02/2019 11:00
Not measured 59
Isel (1)
Not measured Not measured 62
Cymedrol (5)
Chepstow A48
Updated: 23/02/2019 11:00
Not measured 41
Isel (1)
Not measured 37
Cymedrol (4)
48
Isel (3)
Cimla Road / Victoria Gardens
Updated: 23/02/2019 07:00
Not measured 23
Isel (1)
Not measured Not measured Not measured
Cwmbran
Updated: 23/02/2019 11:00
8
Isel (1)
32
Isel (1)
Not measured Not measured 27
Isel (2)
Hafod-yr-ynys Roadside
Updated: 23/02/2019 11:00
Not measured 83
Isel (2)
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: 23/02/2019 10:00
Not measured 40
Isel (1)
Not measured Not measured Not measured
Narberth
Updated: 23/02/2019 11:00
54
Isel (2)
11
Isel (1)
3
Isel (1)
18
Isel (2)
28
Isel (2)
Newport M4 Junction 25
Updated: 23/02/2019 12:00
3
Isel (1)
48
Isel (1)
Not measured Not measured Not measured
Newport St Julians Comp School
Updated: 23/02/2019 10:00
Not measured 45
Isel (1)
Not measured 33
Isel (3)
41
Isel (3)
Port Talbot Dyffryn School
Updated: 23/02/2019 12:00
Not measured Not measured Not measured Not measured 36
Isel (3)
Port Talbot Little Warren
Updated: 23/02/2019 12:00
Not measured Not measured Not measured Not measured 125
Uchel Lawn (10)
Port Talbot Margam
Updated: 23/02/2019 11:00
63
Isel (2)
15
Isel (1)
1
Isel (1)
25
Isel (3)
32
Isel (2)
Port Talbot Prince Street 2
Updated: 22/02/2019 06:00
Not measured Not measured Not measured No Data No Data
Port Talbot Twll-yn-y-Wal Park
Updated: 23/02/2019 12:00
Not measured Not measured Not measured Not measured 34
Isel (3)
Rhondda Glyncoch Garth Avenue
Updated: 12/10/2018 01:00
Not measured Not measured Not measured Not measured No Data
Rhondda Mountain Ash
Updated: 23/02/2019 08:00
Not measured 68
Isel (2)
Not measured Not measured Not measured
Rhondda Pontypridd Gelliwastad Rd
Updated: 23/02/2019 07:00
Not measured 26
Isel (1)
Not measured Not measured Not measured
Rhondda-Cynon-Taf Broadway
Updated: 23/02/2019 12:00
Not measured 45
Isel (1)
Not measured Not measured Not measured
Swansea Cwm Level Park
Updated: 23/02/2019 08:00
No Data No Data Not measured Not measured Not measured
Swansea Hafod DOAS
Updated: 23/02/2019 10:00
39
Isel (2)
43
Isel (1)
Not measured Not measured Not measured
Swansea Morfa Road NOX
Updated: 23/02/2019 10:00
Not measured 42
Isel (1)
Not measured Not measured Not measured
Swansea Morriston Roadside
Updated: 22/02/2019 09:00
No Data No Data Not measured No Data Not measured
Swansea Roadside
Updated: 23/02/2019 11:00
Not measured 44
Isel (1)
Not measured 35
Isel (3)
58
Cymedrol (4)
Swansea St Thomas DOAS
Updated: 23/02/2019 08:00
No Data No Data No Data Not measured Not measured
Swansea Station Court High Street
Updated: 23/02/2019 08:00
Not measured No Data Not measured Not measured Not measured
Twynyrodyn
Updated: 30/11/2018 24:00
Not measured Not measured Not measured No Data No Data
V Glamorgan Windsor Road Penarth
Updated: 23/02/2019 06:00
6
Isel (1)
34
Isel (1)
Not measured Not measured 38
Isel (3)
Wrexham
Updated: 27/11/2018 15:00
Not measured No Data No Data No Data No Data