Current Levels

Current measured levels are shown in the table below - showing concentrations and, where applicable, the corresponding index and bands.

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: 23/05/2018 10:00
No data No data No data No data No data
Anglesey Felin Cafnan
Updated: 26/05/2018 24:00
No data No data No data 12
Low (2)
22
Low (2)
Anglesey Llynfaes
Updated: 26/05/2018 24:00
No data No data No data 8
Low (1)
17
Low (2)
Anglesey Penhesgyn 3
Updated: 26/05/2018 24:00
No data No data No data 7
Low (1)
13
Low (1)
Aston Hill
Updated: 27/05/2018 02:00
107
Moderate (4)
5
Low (1)
No data No data No data
Caerphilly Blackwood High Street
Updated: 26/05/2018 22:00
No data 7
Low (1)
No data No data 24
Low (2)
Caerphilly Fochriw
Updated: 26/05/2018 24:00
No data No data No data 19
Low (2)
21
Low (2)
Caerphilly Islwyn Road Wattsville
Updated: 27/05/2018 03:00
No data 5
Low (1)
No data No data No data
Caerphilly White Street
Updated: 26/05/2018 22:00
No data 7
Low (1)
No data No data 27
Low (2)
Cardiff Centre
Updated: 27/05/2018 02:00
91
Low (3)
3
Low (1)
3
Low (1)
27
Low (3)
31
Low (2)
Cardiff Newport Road
Updated: 27/05/2018 02:00
No data 5
Low (1)
No data No data 37
Low (3)
Chepstow A48
Updated: 27/05/2018 02:00
No data 12
Low (1)
No data 24
Low (3)
33
Low (2)
Cimla Road / Victoria Gardens
Updated: 27/05/2018 03:00
No data 7
Low (1)
No data No data No data
Cwmbran
Updated: 27/05/2018 02:00
103
Moderate (4)
5
Low (1)
No data No data 22
Low (2)
Hafod-yr-ynys Roadside
Updated: 27/05/2018 02:00
No data 11
Low (1)
No data No data No data
Marchlyn Mawr
Updated: 04/07/2017 06:00
No data No data No data No data No data
Nantgarw Road
Updated: 26/05/2018 24:00
No data 7
Low (1)
No data No data No data
Narberth
Updated: 27/05/2018 02:00
109
Moderate (4)
7
Low (1)
11
Low (1)
No data 24
Low (2)
Newport M4 Junction 25
Updated: 27/05/2018 03:00
74
Low (3)
10
Low (1)
No data No data No data
Newport St Julians Comp School
Updated: 27/05/2018 01:00
No data 7
Low (1)
No data No data No data
Port Talbot Docks
Updated: 27/05/2018 03:00
No data No data No data No data 25
Low (2)
Port Talbot Dyffryn School
Updated: 28/06/2017 08:00
No data No data No data No data No data
Port Talbot Little Warren
Updated: 27/05/2018 03:00
No data No data No data No data 25
Low (2)
Port Talbot Margam
Updated: 27/05/2018 02:00
115
Moderate (4)
6
Low (1)
1
Low (1)
19
Low (2)
25
Low (2)
Port Talbot Prince Street 2
Updated: 26/05/2018 23:00
No data No data No data No data No data
Port Talbot Talbot Road
Updated: 27/05/2018 03:00
No data No data No data No data 29
Low (2)
Port Talbot Theodore Road
Updated: 27/05/2018 03:00
No data No data No data No data 26
Low (2)
Port Talbot Twll-yn-y-Wal Park
Updated: 27/05/2018 03:00
No data No data No data No data 23
Low (2)
Rhondda Glyncoch Garth Avenue
Updated: 27/05/2018 01:00
No data No data No data No data 41
Low (3)
Rhondda Mountain Ash
Updated: 26/05/2018 20:00
No data 21
Low (1)
No data No data No data
Rhondda Pontypridd Gelliwastad Rd
Updated: 27/05/2018 03:00
No data 4
Low (1)
No data No data No data
Rhondda-Cynon-Taf Broadway
Updated: 27/05/2018 03:00
No data 4
Low (1)
No data No data No data
Swansea Cwm Level Park
Updated: 27/05/2018 01:00
108
Moderate (4)
6
Low (1)
No data No data No data
Swansea Hafod DOAS
Updated: 22/05/2018 12:00
No data 22
Low (1)
No data No data No data
Swansea Morfa Road NOX
Updated: 27/05/2018 02:00
No data 10
Low (1)
No data No data No data
Swansea Morriston Roadside
Updated: 25/05/2018 06:00
No data No data No data No data No data
Swansea Roadside
Updated: 27/05/2018 02:00
No data 14
Low (1)
No data 25
Low (3)
30
Low (2)
Swansea St Thomas DOAS
Updated: 26/05/2018 24:00
No data 15
Low (1)
2
Low (1)
No data No data
Swansea Station Court High Street
Updated: 26/05/2018 23:00
No data No data No data No data No data
Twynyrodyn
Updated: 05/04/2018 14:00
No data No data No data No data No data
V Glamorgan Windsor Road Penarth
Updated: 26/05/2018 24:00
No data 22
Low (1)
No data No data 40
Low (3)
Wrexham
Updated: 27/05/2018 02:00
No data 18
Low (1)
7
Low (1)
No data No data