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:
23/03/2026 19:00
|
N/M |
68 Low (2) |
N/M | N/M |
37 Low (3) |
|
Ballymena Antrim Road
Updated:
23/03/2026 19:00
|
N/M |
39 Low (1) |
N/M | N/M | N/M |
|
Ballymena Ballykeel
Updated:
23/03/2026 18:00
|
N/M |
31 Low (1) |
18 Low (1) |
18 Low (2) |
27 Low (2) |
|
Belfast Centre
Updated:
23/03/2026 19:00
|
61 Low (2) |
60 Low (1) |
3 Low (1) |
18 Low (2) |
27 Low (2) |
|
Belfast Newtownards Road
Updated:
23/03/2026 18:00
|
N/M |
60 Low (1) |
N/M | N/M | N/M |
|
Belfast Stockman's Lane
Updated:
23/03/2026 19:00
|
N/M |
87 Low (2) |
N/M | N/M |
37 Low (3) |
|
Belfast Westlink Roden Street
Updated:
23/03/2026 19:00
|
N/M |
60 Low (1) |
N/M | N/M | N/M |
|
Castlederg
Updated:
23/03/2026 19:00
|
N/M | N/M | N/M |
14 Low (2) |
22 Low (2) |
|
Castlereagh Dundonald
Updated:
23/03/2026 19:00
|
N/M |
56 Low (1) |
N/M | N/M | N/M |
|
Derry Dale's Corner
Updated:
23/03/2026 19:00
|
N/M |
63 Low (1) |
N/M | N/M | N/M |
|
Derry Rosemount
Updated:
23/03/2026 19:00
|
66 Low (2) |
14 Low (1) |
4 Low (1) |
8 Low (1) |
21 Low (2) |
|
Downpatrick Roadside
Updated:
23/03/2026 18:00
|
N/M |
86 Low (2) |
N/M | N/M | N/M |
|
Enniskillen Bowling Green
Updated:
23/03/2026 19:00
|
N/M | N/M | N/M |
12 Low (2) |
20 Low (2) |
|
Limavady Dungiven
Updated:
23/03/2026 19:00
|
N/M |
80 Low (2) |
N/M |
13 Low (2) |
26 Low (2) |
|
Lisburn Dunmurry Seymour Hill
Updated:
23/03/2026 19:00
|
N/M | N/M |
2 Low (1) |
17 Low (2) |
25 Low (2) |
|
Lough Navar
Updated:
23/03/2026 19:00
|
62 Low (2) |
N/M | N/M |
9 Low (1) |
15 Low (1) |
|
Newry Canal Street
Updated:
23/03/2026 18:00
|
N/M |
78 Low (2) |
N/M | N/M |
30 Low (2) |
|
Newtownabbey Antrim Road
Updated:
23/03/2026 19:00
|
N/M |
76 Low (2) |
N/M | N/M | N/M |
|
Newtownstewart
Updated:
|
N/M | N/M | N/M | N/A | N/A |
|
North Down Holywood A2
Updated:
23/03/2026 19:00
|
N/M |
61 Low (1) |
N/M |
17 Low (2) |
26 Low (2) |
|
Strabane Springhill Park
Updated:
|
N/M | N/M | N/A | N/A | N/A |
|
Strathfoyle Bawnmore Place
Updated:
23/03/2026 19:00
|
N/M | N/M | N/M |
13 Low (2) |
21 Low (2) |