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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/m31
Low (1)
n/mn/m63
Moderate (5)
Ballymena Antrim Road
Graph
Updated: -
n/m20
Low (1)
n/mn/mn/m
Ballymena Ballykeel
Graph
Updated: -
n/m12
Low (1)
3
Low (1)
n/m14
Low (1)
Belfast Centre
Graph
Updated: -
53
Low (2)
54
Low (1)
9
Low (1)
11
Low (1)
18
Low (2)
Belfast Newtownards Road
Graph
Updated: -
n/m36
Low (1)
n/mn/mn/m
Belfast Ormeau Road
Graph
Updated: -
n/m52
Low (1)
n/mn/mn/m
Belfast Stockman's Lane
Graph
Updated: -
n/m93
Low (2)
n/mn/m16
Low (1)
Belfast Westlink Roden Street
Graph
Updated: -
n/m69
Low (2)
n/mn/mn/m
Castlereagh Dundonald
Graph
Updated: -
n/m15
Low (1)
n/mn/mn/m
Derry Dale's Corner
Graph
Updated: -
n/m42
Low (1)
n/mn/mn/m
Derry Rosemount
Graph
Updated: -
63
Low (2)
13
Low (1)
10
Low (1)
8
Low (1)
11
Low (1)
Downpatrick Roadside
Graph
Updated: -
n/m42
Low (1)
n/mn/mn/m
Limavady Dungiven
Graph
Updated: -
n/m48
Low (1)
n/mn/mn/m
Lisburn Dunmurry Seymour Hill
Graph
Updated: -
n/mn/m93
Low (2)
n/m13
Low (1)
Lough Navar
Graph
Updated: -
61
Low (2)
n/mn/mn/m5
Low (1)
Newry Canal Street
Graph
Updated: -
n/m71
Low (2)
n/mn/m14
Low (1)
Newtownabbey Antrim Road
Graph
Updated: -
n/m90
Low (2)
n/mn/mn/m
North Down Holywood A2
Graph
Updated: -
n/m31
Low (1)
n/mn/m18
Low (2)
Strabane Springhill Park
Graph
Updated: -
n/mn/m8
Low (1)
n/m10
Low (1)

Low 1 2 3

Moderate 4 5 6

High 7 8 9

Very High 10

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