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: 18/08/2026 22:00 |
58 Low (2) |
54 Low (1) |
N/M |
13 Low (2) |
29 Low (2) |
N/M |
|
Devils Tower Road
Updated: 18/08/2026 21:00 |
N/M |
60 Low (1) |
N/M | N/M | N/M | N/M |
|
Devils Tower Road (mobile)
Updated: 18/08/2026 22:00 |
N/M |
126 Low (2) |
N/M |
6 Low (1) |
10 Low (1) |
0.4 Low (1) |
|
Governor's Lane (mobile)
Updated: 18/08/2026 22:00 |
N/M |
114 Low (2) |
N/M |
7 Low (1) |
25 Low (2) |
0.3 Low (1) |
|
Harbour Views Road (mobile)
Updated: 18/08/2026 22:00 |
N/M |
195 Low (3) |
N/M |
7 Low (1) |
18 Low (2) |
0.4 Low (1) |
|
North Mole Road (mobile)
Updated: 18/08/2026 22:00 |
N/M |
105 Low (2) |
N/M |
8 Low (1) |
9 Low (1) |
0.5 Low (1) |
|
Rosia Road
Updated: 18/08/2026 22:00 |
N/M |
77 Low (2) |
4 Low (1) |
15 Low (2) |
33 Low (2) |
0.7 Low (1) |
|
Rosia Road Clocktower (mobile)
Updated: 18/08/2026 22:00 |
N/M |
110 Low (2) |
N/M | Offline | Offline |
0.1 Low (1) |
18/08/2026 22:00
