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: 29/07/2026 21:00 |
94 Low (3) |
18 Low (1) |
N/M |
18 Low (2) |
27 Low (2) |
N/M |
|
Devils Tower Road
Updated: 29/07/2026 20:00 |
N/M |
47 Low (1) |
N/M | N/M | N/M | N/M |
|
Devils Tower Road (mobile)
Updated: 29/07/2026 21:00 |
N/M |
95 Low (2) |
N/M |
11 Low (1) |
15 Low (1) |
0.4 Low (1) |
|
Governor's Lane (mobile)
Updated: 29/07/2026 21:00 |
N/M |
53 Low (1) |
N/M |
12 Low (2) |
27 Low (2) |
0.4 Low (1) |
|
Harbour Views Road (mobile)
Updated: 29/07/2026 21:00 |
N/M |
142 Low (3) |
N/M |
12 Low (2) |
21 Low (2) |
0.4 Low (1) |
|
North Mole Road (mobile)
Updated: 29/07/2026 21:00 |
N/M |
46 Low (1) |
N/M |
16 Low (2) |
15 Low (1) |
0.4 Low (1) |
|
Rosia Road
Updated: 29/07/2026 21:00 |
N/M |
23 Low (1) |
1 Low (1) |
19 Low (2) |
29 Low (2) |
0.6 Low (1) |
|
Rosia Road Clocktower (mobile)
Updated: 29/07/2026 21:00 |
N/M |
73 Low (2) |
N/M | Offline | Offline |
0.1 Low (1) |
29/07/2026 21:00
