Current levels

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

» Switch to the 24 hour summary

Key: n/m : not measured

Monitoring 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)
Armagh Lonsdale Road
Graph
Updated: 30/07/2021 07:00
N/M 33
Low (1)
N/M N/M 14
Low (1)
Ballymena Antrim Road
Graph
Updated: 30/07/2021 07:00
N/M 22
Low (1)
N/M N/M N/M
Ballymena Ballykeel
Graph
Updated: 30/07/2021 07:00
N/M 4
Low (1)
6
Low (1)
3
Low (1)
6
Low (1)
Belfast Centre
Graph
Updated: 30/07/2021 07:00
45
Low (2)
19
Low (1)
1
Low (1)
4
Low (1)
7
Low (1)
Belfast Newtownards Road
Graph
Updated: 30/07/2021 06:00
N/M 27
Low (1)
N/M N/M N/M
Belfast Ormeau Road
Graph
Updated: 30/07/2021 06:00
N/M 12
Low (1)
N/M N/M N/M
Belfast Stockman's Lane
Graph
Updated: 30/07/2021 07:00
N/M 86
Low (2)
N/M N/M 16
Low (1)
Belfast Westlink Roden Street
Graph
Updated: 30/07/2021 06:00
N/M 44
Low (1)
N/M N/M N/M
Castlereagh Dundonald
Graph
Updated: 30/07/2021 07:00
N/M 8
Low (1)
N/M N/M N/M
Derry Dale's Corner
Graph
Updated:
N/M N/M N/M N/M N/M
Derry Rosemount
Graph
Updated: 30/07/2021 07:00
49
Low (2)
4
Low (1)
3
Low (1)
8
Low (1)
15
Low (1)
Downpatrick Roadside
Graph
Updated: 30/07/2021 07:00
N/M 38
Low (1)
N/M N/M N/M
Limavady Dungiven
Graph
Updated: 30/07/2021 08:00
N/M 31
Low (1)
N/M N/M N/M
Lisburn Dunmurry Seymour Hill
Graph
Updated: 30/07/2021 07:00
N/M N/M 3
Low (1)
4
Low (1)
-
Lough Navar
Graph
Updated: 30/07/2021 07:00
36
Low (2)
N/M N/M 2
Low (1)
4
Low (1)
Newry Canal Street
Graph
Updated: 30/07/2021 07:00
N/M 67
Low (1)
N/M N/M 12
Low (1)
Newtownabbey Antrim Road
Graph
Updated: 30/07/2021 08:00
N/M 21
Low (1)
N/M N/M N/M
Newtownstewart
Graph
Updated: 30/07/2021 07:00
N/M N/M N/M N/M 11
Low (1)
North Down Holywood A2
Graph
Updated: 30/07/2021 06:00
N/M - N/M 4
Low (1)
7
Low (1)
Strabane Springhill Park
Graph
Updated: 30/07/2021 08:00
N/M N/M 5
Low (1)
N/M 10
Low (1)
Strathfoyle Bawnmore Place
Graph
Updated: 30/07/2021 08:00
N/M N/M N/M N/M 9
Low (1)