24 hour summary
Switch to the current levels summary
Key
- N/D
- Data not available
- N/M
- Data 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
Updated:
20/01/2026 10:00
|
N/M |
58 Low (1) |
N/M | N/M |
8 Low (1) |
|
Ballymena Antrim Road
Updated:
20/01/2026 10:00
|
N/M |
31 Low (1) |
N/M | N/M | N/M |
|
Ballymena Ballykeel
Updated:
20/01/2026 10:00
|
N/M |
21 Low (1) |
6 Low (1) |
5 Low (1) |
7 Low (1) |
|
Belfast Centre
Updated:
20/01/2026 10:00
|
52 Low (2) |
48 Low (1) |
2 Low (1) |
6 Low (1) |
10 Low (1) |
|
Belfast Newtownards Road
Updated:
20/01/2026 11:00
|
N/M |
39 Low (1) |
N/M | N/M | N/M |
|
Belfast Stockman's Lane
Updated:
20/01/2026 10:00
|
N/M |
59 Low (1) |
N/M | N/M |
15 Low (1) |
|
Belfast Westlink Roden Street
Updated:
20/01/2026 11:00
|
N/M |
93 Low (2) |
N/M | N/M | N/M |
|
Castlederg
Updated:
20/01/2026 10:00
|
N/M | N/M | N/M |
15 Low (2) |
17 Low (2) |
|
Castlereagh Dundonald
Updated:
20/01/2026 11:00
|
N/M |
33 Low (1) |
N/M | N/M | N/M |
|
Derry Dale's Corner
Updated:
20/01/2026 10:00
|
N/M |
100 Low (2) |
N/M | N/M | N/M |
|
Derry Rosemount
Updated:
20/01/2026 10:00
|
60 Low (2) |
51 Low (1) |
14 Low (1) |
7 Low (1) |
10 Low (1) |
|
Downpatrick Roadside
Updated:
20/01/2026 11:00
|
N/M |
99 Low (2) |
N/M | N/M | N/M |
|
Enniskillen Bowling Green
Updated:
20/01/2026 10:00
|
N/M | N/M | N/M |
6 Low (1) |
8 Low (1) |
|
Limavady Dungiven
Updated:
20/01/2026 11:00
|
N/M |
53 Low (1) |
N/M |
6 Low (1) |
8 Low (1) |
|
Lisburn Dunmurry Seymour Hill
Updated:
20/01/2026 10:00
|
N/M | N/M |
2 Low (1) |
5 Low (1) |
8 Low (1) |
|
Lough Navar
Updated:
20/01/2026 10:00
|
54 Low (2) |
N/M | N/M |
2 Low (1) |
3 Low (1) |
|
Newry Canal Street
Updated:
20/01/2026 11:00
|
N/M |
56 Low (1) |
N/M | N/M | N/A |
|
Newtownabbey Antrim Road
Updated:
20/01/2026 11:00
|
N/M |
58 Low (1) |
N/M | N/M | N/M |
|
Newtownstewart
Updated:
|
N/M | N/M | N/M | N/A | N/A |
|
North Down Holywood A2
Updated:
20/01/2026 11:00
|
N/M |
26 Low (1) |
N/M |
5 Low (1) |
9 Low (1) |
|
Strabane Springhill Park
Updated:
|
N/M | N/M | N/A | N/A | N/A |
|
Strathfoyle Bawnmore Place
Updated:
20/01/2026 10:00
|
N/M | N/M | N/M |
6 Low (1) |
8 Low (1) |