Current levels
Current measured levels are shown in the table below - showing concentrations and, where applicable, the corresponding index and bands.
Key: N/M: Not Measured
Key: N/D: No Data
| Monitoring site | 8 Hour mean Ozone (µg/m3) |
Hourly mean Nitrogen dioxide (µg/m3) |
Max 15 min mean Sulphur dioxide (µg/m3) |
Running 24 Hour mean PM2.5 Particles (µg/m3) |
Running 24 Hour mean PM10 Particles (µg/m3) |
8 Hour mean CO (mg/m3) |
|---|---|---|---|---|---|---|
|
Bleak House
Updated: 23/03/2026 01:00 |
Offline |
24 Low (1) |
N/M | N/A | N/A | N/M |
|
Devils Tower Road
Updated: 23/03/2026 15:00 |
N/M |
69 Low (2) |
N/M | N/M | N/M | N/M |
|
Devils Tower Road (mobile)
Updated: 23/03/2026 16:00 |
N/M |
98 Low (2) |
N/M |
7 Low (1) |
15 Low (1) |
0.6 Low (1) |
|
Governor's Lane (mobile)
Updated: 23/03/2026 15:00 |
N/M |
56 Low (1) |
N/M |
6 Low (1) |
7 Low (1) |
0.6 Low (1) |
|
Harbour Views Road (mobile)
Updated: 23/03/2026 16:00 |
N/M |
34 Low (1) |
N/M |
6 Low (1) |
12 Low (1) |
0.4 Low (1) |
|
North Mole Road (mobile)
Updated: 23/03/2026 15:00 |
N/M |
57 Low (1) |
N/M |
7 Low (1) |
7 Low (1) |
0.5 Low (1) |
|
Rosia Road
Updated: 23/03/2026 14:00 |
N/M |
20 Low (1) |
Offline |
10 Low (1) |
20 Low (2) |
0.3 Low (1) |
|
Rosia Road Clocktower (mobile)
Updated: 23/03/2026 16:00 |
N/M |
16 Low (1) |
N/M | Offline | Offline |
0.1 Low (1) |
23/03/2026 01:00
