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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/m39
Low (1)
n/mn/m12
Low (1)
Ballymena Antrim Road
Graph
Updated: -
n/m31
Low (1)
n/mn/mn/m
Ballymena Ballykeel
Graph
Updated: -
n/m25
Low (1)
2
Low (1)
n/m9
Low (1)
Belfast Centre
Graph
Updated: -
60
Low (2)
40
Low (1)
9
Low (1)
10
Low (1)
9
Low (1)
Belfast Newtownards Road
Graph
Updated: -
n/m38
Low (1)
n/mn/mn/m
Belfast Ormeau Road
Graph
Updated: -
n/m45
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/m29
Low (1)
n/mn/mn/m
Castlereagh Dundonald
Graph
Updated: -
n/m44
Low (1)
n/mn/mn/m
Derry Dale's Corner
Graph
Updated: -
n/m42
Low (1)
n/mn/mn/m
Derry Rosemount
Graph
Updated: -
65
Low (2)
12
Low (1)
11
Low (1)
4
Low (1)
5
Low (1)
Downpatrick Roadside
Graph
Updated: -
n/m73
Low (2)
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/m4
Low (1)
Lough Navar
Graph
Updated: -
69
Low (3)
n/mn/m2
Low (1)
4
Low (1)
Newry Canal Street
Graph
Updated: -
n/m46
Low (1)
n/mn/m9
Low (1)
Newtownabbey Antrim Road
Graph
Updated: -
n/m80
Low (2)
n/mn/mn/m
North Down Holywood A2
Graph
Updated: -
n/m67
Low (1)
n/mn/m12
Low (1)
Strabane Springhill Park
Graph
Updated: -
n/mn/m5
Low (1)
n/m9
Low (1)
Strathfoyle Bawnmore Place
Graph
Updated: -
n/mn/mn/mn/m8
Low (1)

Low 1 2 3

Moderate 4 5 6

High 7 8 9

Very High 10

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