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: 30/10/2025 08:00 |
42 Low (2) |
16 Low (1) |
N/M |
9 Low (1) |
18 Low (2) |
N/M |
|
Devils Tower Road
Updated: 30/10/2025 08:00 |
N/M |
74 Low (2) |
N/M | N/M | N/M | N/M |
|
Devils Tower Road (mobile)
Updated: 30/10/2025 09:00 |
N/M |
30 Low (1) |
N/M |
16 Low (2) |
53 Moderate (4) |
0.1 Low (1) |
|
Governor's Lane (mobile)
Updated: 30/10/2025 08:00 |
N/M |
31 Low (1) |
N/M |
7 Low (1) |
14 Low (1) |
0.1 Low (1) |
|
Harbour Views Road (mobile)
Updated: 30/10/2025 09:00 |
N/M |
25 Low (1) |
N/M |
8 Low (1) |
27 Low (2) |
0.1 Low (1) |
|
North Mole Road (mobile)
Updated: 30/10/2025 08:00 |
N/M |
21 Low (1) |
N/M |
7 Low (1) |
8 Low (1) |
0.3 Low (1) |
|
Rosia Road
Updated: 30/10/2025 09:00 |
N/M |
60 Low (1) |
3 Low (1) |
8 Low (1) |
17 Low (2) |
0.9 Low (1) |
|
Rosia Road Clocktower (mobile)
Updated: 30/10/2025 09:00 |
N/M |
35 Low (1) |
N/M |
7 Low (1) |
15 Low (1) |
0.1 Low (1) |
30/10/2025 08:00
