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: 07/08/2026 10:00 |
23 Low (1) |
29 Low (1) |
N/M |
6 Low (1) |
15 Low (1) |
N/M |
|
Devils Tower Road
Updated: 07/08/2026 10:00 |
N/M |
45 Low (1) |
N/M | N/M | N/M | N/M |
|
Devils Tower Road (mobile)
Updated: 07/08/2026 11:00 |
N/M |
48 Low (1) |
N/M |
2 Low (1) |
4 Low (1) |
0.4 Low (1) |
|
Governor's Lane (mobile)
Updated: 07/08/2026 10:00 |
N/M |
56 Low (1) |
N/M |
4 Low (1) |
14 Low (1) |
0.4 Low (1) |
|
Harbour Views Road (mobile)
Updated: 07/08/2026 11:00 |
N/M |
31 Low (1) |
N/M |
3 Low (1) |
8 Low (1) |
0.5 Low (1) |
|
North Mole Road (mobile)
Updated: 07/08/2026 10:00 |
N/M |
25 Low (1) |
N/M |
3 Low (1) |
3 Low (1) |
0.4 Low (1) |
|
Rosia Road
Updated: 07/08/2026 11:00 |
N/M |
66 Low (1) |
4 Low (1) |
7 Low (1) |
21 Low (2) |
0.8 Low (1) |
|
Rosia Road Clocktower (mobile)
Updated: 07/08/2026 11:00 |
N/M |
67 Low (1) |
N/M | Offline | Offline |
0.3 Low (1) |
07/08/2026 10:00
