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: 22/09/2020 22:00
N/M 35
Low (1)
N/M N/M 22
Low (2)
Ballymena Antrim Road
Graph
Updated: 22/09/2020 22:00
N/M 19
Low (1)
N/M N/M N/M
Ballymena Ballykeel
Graph
Updated: 22/09/2020 22:00
N/M 14
Low (1)
7
Low (1)
N/M 18
Low (2)
Belfast Centre
Graph
Updated: 22/09/2020 22:00
59
Low (2)
34
Low (1)
2
Low (1)
11
Low (1)
16
Low (1)
Belfast Newtownards Road
Graph
Updated: 22/09/2020 16:00
N/M 53
Low (1)
N/M N/M N/M
Belfast Ormeau Road
Graph
Updated: 22/09/2020 16:00
N/M 49
Low (1)
N/M N/M N/M
Belfast Stockman's Lane
Graph
Updated: 22/09/2020 22:00
N/M 74
Low (2)
N/M N/M 28
Low (2)
Belfast Westlink Roden Street
Graph
Updated: 22/09/2020 16:00
N/M 43
Low (1)
N/M N/M N/M
Castlereagh Dundonald
Graph
Updated: 22/09/2020 22:00
N/M 25
Low (1)
N/M N/M N/M
Derry Dale's Corner
Graph
Updated: 22/09/2020 22:00
N/M 36
Low (1)
N/M N/M N/M
Derry Rosemount
Graph
Updated: 22/09/2020 22:00
61
Low (2)
9
Low (1)
4
Low (1)
8
Low (1)
15
Low (1)
Downpatrick Roadside
Graph
Updated: 22/09/2020 22:00
N/M 78
Low (2)
N/M N/M N/M
Limavady Dungiven
Graph
Updated: 22/09/2020 22:00
N/M 34
Low (1)
N/M N/M N/M
Lisburn Dunmurry Seymour Hill
Graph
Updated: 22/09/2020 22:00
N/M N/M 5
Low (1)
N/M 14
Low (1)
Lough Navar
Graph
Updated: 22/09/2020 22:00
71
Low (3)
N/M N/M 5
Low (1)
8
Low (1)
Newry Canal Street
Graph
Updated: 22/09/2020 22:00
N/M 23
Low (1)
N/M N/M 21
Low (2)
Newtownabbey Antrim Road
Graph
Updated:
N/M N/M N/M N/M N/M
North Down Holywood A2
Graph
Updated: 22/09/2020 21:00
N/M 46
Low (1)
N/M N/M 20
Low (2)
Strabane Springhill Park
Graph
Updated: 22/09/2020 22:00
N/M N/M 8
Low (1)
N/M 15
Low (1)
Strathfoyle Bawnmore Place
Graph
Updated: 22/09/2020 22:00
N/M N/M N/M N/M 14
Low (1)