24 Hour Summary

The maximum pollutant concentrations measured during the last 24 hours across Northern Ireland are shown below. Summary graphs showing the last seven days are available for each pollutant in the left hand column of the table.

» Switch to the current levels 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: 16/06/2021 15:00
N/M 37
Low (1)
N/M N/M 18
Low (2)
Ballymena Antrim Road
Graph
Updated: 16/06/2021 15:00
N/M 39
Low (1)
N/M N/M N/M
Ballymena Ballykeel
Graph
Updated: 16/06/2021 14:00
N/M 16
Low (1)
2
Low (1)
6
Low (1)
12
Low (1)
Belfast Centre
Graph
Updated: 16/06/2021 15:00
66
Low (2)
27
Low (1)
2
Low (1)
7
Low (1)
15
Low (1)
Belfast Newtownards Road
Graph
Updated: 16/06/2021 11:00
N/M 28
Low (1)
N/M N/M N/M
Belfast Ormeau Road
Graph
Updated: 16/06/2021 11:00
N/M 19
Low (1)
N/M N/M N/M
Belfast Stockman's Lane
Graph
Updated: 16/06/2021 15:00
N/M 68
Low (2)
N/M N/M 22
Low (2)
Belfast Westlink Roden Street
Graph
Updated: 16/06/2021 11:00
N/M 19
Low (1)
N/M N/M N/M
Castlereagh Dundonald
Graph
Updated: 16/06/2021 14:00
N/M 25
Low (1)
N/M N/M N/M
Derry Dale's Corner
Graph
Updated: 16/06/2021 14:00
N/M 40
Low (1)
N/M N/M N/M
Derry Rosemount
Graph
Updated: 16/06/2021 15:00
57
Low (2)
8
Low (1)
2
Low (1)
6
Low (1)
11
Low (1)
Downpatrick Roadside
Graph
Updated: 16/06/2021 14:00
N/M 88
Low (2)
N/M N/M N/M
Limavady Dungiven
Graph
Updated: 16/06/2021 15:00
N/M 31
Low (1)
N/M N/M N/M
Lisburn Dunmurry Seymour Hill
Graph
Updated: 16/06/2021 14:00
N/M N/M 197
Low (3)
6
Low (1)
-
Lough Navar
Graph
Updated: 16/06/2021 15:00
54
Low (2)
N/M N/M 3
Low (1)
6
Low (1)
Newry Canal Street
Graph
Updated: 16/06/2021 13:00
N/M 40
Low (1)
N/M N/M 18
Low (2)
Newtownabbey Antrim Road
Graph
Updated: 16/06/2021 13:00
N/M 80
Low (2)
N/M N/M N/M
Newtownstewart
Graph
Updated: 16/06/2021 14:00
N/M N/M N/M N/M 15
Low (1)
North Down Holywood A2
Graph
Updated: 16/06/2021 07:00
N/M 38
Low (1)
N/M 6
Low (1)
14
Low (1)
Strabane Springhill Park
Graph
Updated: 16/06/2021 14:00
N/M N/M 8
Low (1)
N/M 12
Low (1)
Strathfoyle Bawnmore Place
Graph
Updated: 16/06/2021 14:00
N/M N/M N/M N/M 14
Low (1)