This website uses cookies to make it simpler. Find out more »

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/m53
Low (1)
n/mn/m11
Low (1)
Ballymena Antrim Road
Graph
Updated: -
n/m57
Low (1)
n/mn/mn/m
Ballymena Ballykeel
Graph
Updated: -
n/m45
Low (1)
5
Low (1)
n/m0
Low (1)
Belfast Centre
Graph
Updated: -
54
Low (2)
60
Low (1)
21
Low (1)
8
Low (1)
11
Low (1)
Belfast Newtownards Road
Graph
Updated: -
n/m78
Low (2)
n/mn/mn/m
Belfast Ormeau Road
Graph
Updated: -
n/m63
Low (1)
n/mn/mn/m
Belfast Stockman's Lane
Graph
Updated: -
n/m104
Low (2)
n/mn/m16
Low (1)
Belfast Westlink Roden Street
Graph
Updated: -
n/m48
Low (1)
n/mn/mn/m
Castlereagh Dundonald
Graph
Updated: -
n/m78
Low (2)
n/mn/mn/m
Derry Dale's Corner
Graph
Updated: -
n/m75
Low (2)
n/mn/mn/m
Derry Rosemount
Graph
Updated: -
69
Low (3)
51
Low (1)
4
Low (1)
5
Low (1)
6
Low (1)
Downpatrick Roadside
Graph
Updated: -
n/m142
Low (3)
n/mn/mn/m
Limavady Dungiven
Graph
Updated: -
n/m130
Low (2)
n/mn/mn/m
Lisburn Dunmurry Seymour Hill
Graph
Updated: -
n/mn/m0
Low (1)
n/m12
Low (1)
Lough Navar
Graph
Updated: -
62
Low (2)
n/mn/mn/m4
Low (1)
Newry Canal Street
Graph
Updated: -
n/m67
Low (1)
n/mn/m9
Low (1)
Newtownabbey Antrim Road
Graph
Updated: -
n/m54
Low (1)
n/mn/mn/m
North Down Holywood A2
Graph
Updated: -
n/m77
Low (2)
n/mn/m14
Low (1)
Strabane Springhill Park
Graph
Updated: -
n/mn/m8
Low (1)
n/m13
Low (1)

Low 1 2 3

Moderate 4 5 6

High 7 8 9

Very High 10

Find out more about the bands »