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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/m85
Low (2)
n/mn/m21
Low (2)
Ballymena Antrim Road
Graph
Updated: -
n/m87
Low (2)
n/mn/mn/m
Ballymena Ballykeel
Graph
Updated: -
n/m44
Low (1)
4
Low (1)
n/m14
Low (1)
Belfast Centre
Graph
Updated: -
59
Low (2)
42
Low (1)
6
Low (1)
12
Low (2)
16
Low (1)
Belfast Newtownards Road
Graph
Updated: -
n/m29
Low (1)
n/mn/mn/m
Belfast Ormeau Road
Graph
Updated: -
n/m10
Low (1)
n/mn/mn/m
Belfast Stockman's Lane
Graph
Updated: -
n/m83
Low (2)
n/mn/m14
Low (1)
Belfast Westlink Roden Street
Graph
Updated: -
n/m27
Low (1)
n/mn/mn/m
Castlereagh Dundonald
Graph
Updated: -
n/m132
Low (2)
n/mn/mn/m
Derry Dale's Corner
Graph
Updated: -
n/m96
Low (2)
n/mn/mn/m
Derry Rosemount
Graph
Updated: -
71
Low (3)
60
Low (1)
5
Low (1)
11
Low (1)
13
Low (1)
Downpatrick Roadside
Graph
Updated: -
n/m78
Low (2)
n/mn/mn/m
Limavady Dungiven
Graph
Updated: -
n/m132
Low (2)
n/mn/mn/m
Lisburn Dunmurry Seymour Hill
Graph
Updated: -
n/mn/m0
Low (1)
n/m16
Low (1)
Lough Navar
Graph
Updated: -
62
Low (2)
n/mn/m6
Low (1)
9
Low (1)
Newry Canal Street
Graph
Updated: -
n/m115
Low (2)
n/mn/m13
Low (1)
Newtownabbey Antrim Road
Graph
Updated: -
n/m71
Low (2)
n/mn/mn/m
North Down Holywood A2
Graph
Updated: -
n/m40
Low (1)
n/mn/m20
Low (2)
Strabane Springhill Park
Graph
Updated: -
n/mn/m5
Low (1)
n/m15
Low (1)

Low 1 2 3

Moderate 4 5 6

High 7 8 9

Very High 10

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