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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.

ยป 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: -
n/m27
Low (1)
n/mn/m33
Low (2)
Ballymena Antrim Road
Graph
Updated: -
n/m28
Low (1)
n/mn/mn/m
Ballymena Ballykeel
Graph
Updated: -
n/m24
Low (1)
7
Low (1)
n/m34
Low (3)
Belfast Centre
Graph
Updated: -
121
Moderate (5)
56
Low (1)
11
Low (1)
33
Low (3)
36
Low (3)
Belfast Newtownards Road
Graph
Updated: -
n/m31
Low (1)
n/mn/mn/m
Belfast Ormeau Road
Graph
Updated: -
n/m31
Low (1)
n/mn/mn/m
Belfast Stockman's Lane
Graph
Updated: -
n/m51
Low (1)
n/mn/m37
Low (3)
Belfast Westlink Roden Street
Graph
Updated: -
n/m43
Low (1)
n/mn/mn/m
Castlereagh Dundonald
Graph
Updated: -
n/m33
Low (1)
n/mn/mn/m
Derry Dale's Corner
Graph
Updated: -
n/m44
Low (1)
n/mn/mn/m
Derry Rosemount
Graph
Updated: -
122
Moderate (5)
13
Low (1)
10
Low (1)
13
Low (2)
11
Low (1)
Downpatrick Roadside
Graph
Updated: -
n/m31
Low (1)
n/mn/mn/m
Limavady Dungiven
Graph
Updated: -
n/mNo datan/mn/mn/m
Lisburn Dunmurry Seymour Hill
Graph
Updated: -
n/mn/m3
Low (1)
n/m28
Low (2)
Lough Navar
Graph
Updated: -
102
Moderate (4)
n/mn/m6
Low (1)
8
Low (1)
Newry Canal Street
Graph
Updated: -
n/m78
Low (2)
n/mn/m32
Low (2)
Newtownabbey Antrim Road
Graph
Updated: -
n/m71
Low (2)
n/mn/mn/m
North Down Holywood A2
Graph
Updated: -
n/m37
Low (1)
n/mn/m33
Low (2)
Strabane Springhill Park
Graph
Updated: -
n/mn/m17
Low (1)
n/m18
Low (2)
Strathfoyle Bawnmore Place
Graph
Updated: -
n/mn/mn/mn/m21
Low (2)

Low 1 2 3

Moderate 4 5 6

High 7 8 9

Very High 10

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