Current levels

Current measured levels are shown in the table below - showing concentrations and, where applicable, the corresponding index and bands.

Switch to the 24 hour summary

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: 09/06/2025 22:00
69
Low (3)
9
Low (1)
N/M 15
Low (2)
28
Low (2)
N/M
Devils Tower Road

Updated: 09/06/2025 17:00
N/M 16
Low (1)
N/M N/M N/M N/M
Devils Tower Road (mobile)

Updated: 09/06/2025 22:00
N/M 48
Low (1)
N/M 22
Low (2)
47
Low (3)
0.2
Low (1)
Governor's Lane (mobile)

Updated: 09/06/2025 22:00
N/M 45
Low (1)
N/M 21
Low (2)
24
Low (2)
0.4
Low (1)
Harbour Views Road (mobile)

Updated: 09/06/2025 22:00
N/M 69
Low (2)
N/M 20
Low (2)
17
Low (2)
0.4
Low (1)
North Mole Road (mobile)

Updated: 09/06/2025 22:00
N/M 13
Low (1)
N/M 13
Low (2)
19
Low (2)
0.3
Low (1)
Rosia Road

Updated: 09/06/2025 22:00
N/M 11
Low (1)
0
Low (1)
14
Low (2)
28
Low (2)
0.3
Low (1)
Rosia Road Clocktower (mobile)

Updated: 09/06/2025 22:00
N/M 51
Low (1)
N/M 9
Low (1)
19
Low (2)
0.0
Low (1)