24 hour summary

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Key: N/D: Data Not Available
N/M: Data Not Measured

Air pollution levels for the last 24 hours
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
Updated: 15/03/2025 11:00
N/M 53
Low (1)
N/M N/M 26
Low (2)
Ballymena Antrim Road
Updated: 15/03/2025 11:00
N/M 62
Low (1)
N/M N/M N/M
Ballymena Ballykeel
Updated:
N/M N/A N/A N/A N/A
Belfast Centre
Updated: 15/03/2025 11:00
62
Low (2)
71
Low (2)
5
Low (1)
10
Low (1)
17
Low (2)
Belfast Newtownards Road
Updated: 15/03/2025 11:00
N/M 71
Low (2)
N/M N/M N/M
Belfast Ormeau Road
Updated: 15/03/2025 11:00
N/M 75
Low (2)
N/M N/M N/M
Belfast Stockman's Lane
Updated: 15/03/2025 11:00
N/M 68
Low (2)
N/M N/M 35
Low (3)
Belfast Westlink Roden Street
Updated: 15/03/2025 11:00
N/M 77
Low (2)
N/M N/M N/M
Castlereagh Dundonald
Updated: 15/03/2025 05:00
N/M 54
Low (1)
N/M N/M N/M
Derry Dale's Corner
Updated:
N/M N/A N/M N/M N/M
Derry Rosemount
Updated: 15/03/2025 11:00
75
Low (3)
49
Low (1)
21
Low (1)
N/A 14
Low (1)
Downpatrick Roadside
Updated: 15/03/2025 06:00
N/M 126
Low (2)
N/M N/M N/M
Enniskillen Bowling Green
Updated: 15/03/2025 11:00
N/M N/M N/M 14
Low (2)
19
Low (2)
Limavady Dungiven
Updated: 15/03/2025 10:00
N/M 58
Low (1)
N/M N/M N/M
Lisburn Dunmurry Seymour Hill
Updated: 15/03/2025 05:00
N/M N/M 3
Low (1)
9
Low (1)
14
Low (1)
Lough Navar
Updated: 15/03/2025 11:00
71
Low (3)
N/M N/M 2
Low (1)
3
Low (1)
Newry Canal Street
Updated: 15/03/2025 10:00
N/M 126
Low (2)
N/M N/M 46
Low (3)
Newtownabbey Antrim Road
Updated: 15/03/2025 11:00
N/M 110
Low (2)
N/M N/M N/M
Newtownstewart
Updated: 15/03/2025 11:00
N/M N/M N/M 7
Low (1)
10
Low (1)
North Down Holywood A2
Updated: 15/03/2025 06:00
N/M 60
Low (1)
N/M 6
Low (1)
12
Low (1)
Strabane Springhill Park
Updated:
N/M N/M N/A N/A N/A
Strathfoyle Bawnmore Place
Updated: 15/03/2025 10:00
N/M N/M N/M 10
Low (1)
15
Low (1)
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