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: 28/09/2026 10:00 |
82 Low (3) |
6 Low (1) |
N/M |
7 Low (1) |
14 Low (1) |
N/M |
|
Devils Tower Road
Updated: 28/09/2026 10:00 |
N/M |
56 Low (1) |
N/M | N/M | N/M | N/M |
|
Devils Tower Road (mobile)
Updated: 28/09/2026 11:00 |
N/M |
64 Low (1) |
N/M |
28 Low (3) |
40 Low (3) |
0.3 Low (1) |
|
Governor's Lane (mobile)
Updated: 28/09/2026 10:00 |
N/M |
19 Low (1) |
N/M |
5 Low (1) |
15 Low (1) |
0.2 Low (1) |
|
Harbour Views Road (mobile)
Updated: 28/09/2026 11:00 |
N/M |
9 Low (1) |
N/M |
10 Low (1) |
22 Low (2) |
0.4 Low (1) |
|
North Mole Road (mobile)
Updated: 28/09/2026 10:00 |
N/M |
20 Low (1) |
N/M |
7 Low (1) |
9 Low (1) |
0.4 Low (1) |
|
Rosia Road
Updated: 28/09/2026 10:00 |
N/M |
17 Low (1) |
N/A |
8 Low (1) |
16 Low (1) |
1.0 Low (1) |
|
Rosia Road Clocktower (mobile)
Updated: 28/09/2026 11:00 |
N/M |
26 Low (1) |
N/M | Offline | Offline |
0.1 Low (1) |
28/09/2026 10:00
