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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/m74
Low (2)
n/mn/m43
Low (3)
Ballymena Antrim Road
Graph
Updated: -
n/m68
Low (2)
n/mn/mn/m
Ballymena Ballykeel
Graph
Updated: -
n/m47
Low (1)
31
Low (1)
n/m23
Low (2)
Belfast Centre
Graph
Updated: -
41
Low (2)
65
Low (1)
7
Low (1)
13
Low (2)
27
Low (2)
Belfast Newtownards Road
Graph
Updated: -
n/m80
Low (2)
n/mn/mn/m
Belfast Ormeau Road
Graph
Updated: -
n/m59
Low (1)
n/mn/mn/m
Belfast Stockman's Lane
Graph
Updated: -
n/m115
Low (2)
n/mn/m36
Low (3)
Belfast Westlink Roden Street
Graph
Updated: -
n/m105
Low (2)
n/mn/mn/m
Castlereagh Dundonald
Graph
Updated: -
n/m58
Low (1)
n/mn/mn/m
Derry Dale's Corner
Graph
Updated: -
n/m57
Low (1)
n/mn/mn/m
Derry Rosemount
Graph
Updated: -
63
Low (2)
29
Low (1)
6
Low (1)
19
Low (2)
25
Low (2)
Downpatrick Roadside
Graph
Updated: -
n/m172
Low (3)
n/mn/mn/m
Limavady Dungiven
Graph
Updated: -
n/m101
Low (2)
n/mn/mn/m
Lisburn Dunmurry Seymour Hill
Graph
Updated: -
n/mn/m261
Low (3)
n/m21
Low (2)
Lough Navar
Graph
Updated: -
56
Low (2)
n/mn/mn/m12
Low (1)
Newry Canal Street
Graph
Updated: -
n/m119
Low (2)
n/mn/m37
Low (3)
Newtownabbey Antrim Road
Graph
Updated: -
n/m92
Low (2)
n/mn/mn/m
North Down Holywood A2
Graph
Updated: -
n/m51
Low (1)
n/mn/m31
Low (2)
Strabane Springhill Park
Graph
Updated: -
n/mn/m5
Low (1)
n/m23
Low (2)

Low 1 2 3

Moderate 4 5 6

High 7 8 9

Very High 10

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