Latest measured levels based on data provided by the Environment Agency

Here you can view the detailed data behind the latest measurement summary displayed on UK-AIR, and also a summary of information that has been displayed over the previous 24 hours. The detailed data tabulated below are from monitoring sites within the AURN. Graphs of hourly monitoring data are also available to view as weekly time series. You can also subscribe to this information as an email alert.

  • View the legend
  • Pollutant levels recorded for the hour up to 8pm Sat 18th Jan 2025

Filter by region:

Greater London

Latest measured levels based on data provided by the Environment Agency
Monitoring site Running 8 Hour mean Ozone
(µgm-3)
Hourly mean
Nitrogen dioxide
(µgm-3)
Max 15 min mean
Sulphur dioxide
(µgm-3)
Running 24 Hour mean
PM2.5
Particles
(µgm-3)
Running 24 Hour mean
PM10
Particles
(µgm-3)
Last
updated
Camden Kerbside
Timeseries Graph
n/m61 (1 Low)n/m28 (3 Low)40 (3 Low)
*1
18/01/2025
20:00
Ealing Horn Lane
Timeseries Graph
n/mn/mn/mn/m31 (2 Low)
*1
18/01/2025
20:00
Haringey Roadside
Timeseries Graph
n/m34 (1 Low)n/mn/mn/m 18/01/2025
20:00
London Bexley
Timeseries Graph
n/m33 (1 Low)n/m26 (3 Low)30 (2 Low)
*2
18/01/2025
20:00
London Bloomsbury
Timeseries Graph
15 (1 Low)50 (1 Low)2 (1 Low)26 (3 Low)31 (2 Low)
*2
18/01/2025
20:00
London Haringey Priory Park South
Timeseries Graph
16 (1 Low)32 (1 Low)n/mn/mn/m 18/01/2025
20:00
London Harlington
Timeseries Graph
10 (1 Low)47 (1 Low)n/m24 (3 Low)27 (2 Low)
*2
18/01/2025
20:00
London Hillingdon
Timeseries Graph
8 (1 Low)50 (1 Low)n/m24 (3 Low)29 (2 Low)
*2
18/01/2025
20:00
London Honor Oak Park
Timeseries Graph
26 (1 Low)n/mn/m23 (2 Low)26 (2 Low)
*2
18/01/2025
20:00
London Marylebone Road
Timeseries Graph
13 (1 Low)49 (1 Low)3 (1 Low)n/an/a 18/01/2025
20:00
London N. Kensington
Timeseries Graph
20 (1 Low)42 (1 Low)1 (1 Low)26 (3 Low)30 (2 Low)
*2
18/01/2025
20:00
London Teddington Bushy Park
Timeseries Graph
n/mn/mn/m24 (3 Low)29 (2 Low)
*2
18/01/2025
20:00
London Westminster
Timeseries Graph
12 (1 Low)50 (1 Low)n/m25 (3 Low)n/m 18/01/2025
20:00
Southwark A2 Old Kent Road
Timeseries Graph
n/m53 (1 Low)n/mn/mn/a 18/01/2025
20:00
Tower Hamlets Roadside
Timeseries Graph
n/m41 (1 Low)n/mn/mn/m 18/01/2025
20:00

» View the latest regional summary for this region

Legend

  • n/m means that the pollutant is not measured at that site
  • n/a means that no data were recorded for the period
  • *1: measurements are PM10 BAM 1020 heated
  • *2: measurements are PM10 FIDAS
  • *3: measurements are PM10 SEQ 47/50