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:
N/M N/M N/M N/M N/M
Ballymena Antrim Road
Graph
Updated: 21/01/2021 22:00
N/M 37
Low (1)
N/M N/M N/M
Ballymena Ballykeel
Graph
Updated: 21/01/2021 22:00
N/M 21
Low (1)
2
Low (1)
N/M 16
Low (1)
Belfast Centre
Graph
Updated: 21/01/2021 22:00
40
Low (2)
30
Low (1)
2
Low (1)
5
Low (1)
8
Low (1)
Belfast Newtownards Road
Graph
Updated: 21/01/2021 17:00
N/M 41
Low (1)
N/M N/M N/M
Belfast Ormeau Road
Graph
Updated: 21/01/2021 17:00
N/M 23
Low (1)
N/M N/M N/M
Belfast Stockman's Lane
Graph
Updated: 21/01/2021 22:00
N/M 28
Low (1)
N/M N/M 9
Low (1)
Belfast Westlink Roden Street
Graph
Updated: 21/01/2021 17:00
N/M 41
Low (1)
N/M N/M N/M
Castlereagh Dundonald
Graph
Updated: 21/01/2021 22:00
N/M 25
Low (1)
N/M N/M N/M
Derry Dale's Corner
Graph
Updated: 21/01/2021 22:00
N/M 27
Low (1)
N/M N/M N/M
Derry Rosemount
Graph
Updated: 21/01/2021 22:00
56
Low (2)
5
Low (1)
4
Low (1)
6
Low (1)
10
Low (1)
Downpatrick Roadside
Graph
Updated:
N/M N/M N/M N/M N/M
Limavady Dungiven
Graph
Updated: 21/01/2021 16:00
N/M 61
Low (1)
N/M N/M N/M
Lisburn Dunmurry Seymour Hill
Graph
Updated:
N/M N/M N/M N/M N/M
Lough Navar
Graph
Updated: 21/01/2021 22:00
56
Low (2)
N/M N/M 3
Low (1)
5
Low (1)
Newry Canal Street
Graph
Updated: 21/01/2021 22:00
N/M 27
Low (1)
N/M N/M 11
Low (1)
Newtownabbey Antrim Road
Graph
Updated: 21/01/2021 21:00
N/M 31
Low (1)
N/M N/M N/M
North Down Holywood A2
Graph
Updated: 21/01/2021 22:00
N/M 21
Low (1)
N/M 5
Low (1)
8
Low (1)
Strabane Springhill Park
Graph
Updated: 21/01/2021 21:00
N/M N/M 32
Low (1)
N/M 21
Low (2)
Strathfoyle Bawnmore Place
Graph
Updated: 21/01/2021 22:00
N/M N/M N/M N/M 55
Moderate (4)