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 9am Tue 22nd Apr 2025

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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/m31 (1 Low)n/m11 (1 Low)20 (2 Low)
*1
22/04/2025
09:00:00
Ealing Horn Lane
Timeseries Graph
n/mn/mn/mn/m24 (2 Low)
*1
22/04/2025
09:00:00
Haringey Roadside
Timeseries Graph
n/m34 (1 Low)n/mn/mn/m 22/04/2025
09:00:00
London Bexley
Timeseries Graph
n/m27 (1 Low)n/m10 (1 Low)14 (1 Low)
*2
22/04/2025
09:00:00
London Bloomsbury
Timeseries Graph
40 (2 Low)22 (1 Low)2 (1 Low)8 (1 Low)11 (1 Low)
*2
22/04/2025
09:00:00
London Haringey Priory Park South
Timeseries Graph
40 (2 Low)21 (1 Low)n/m8 (1 Low)11 (1 Low)
*2
22/04/2025
09:00:00
London Harlington
Timeseries Graph
n/a16 (1 Low)n/m10 (1 Low)15 (1 Low)
*2
22/04/2025
09:00:00
London Hillingdon
Timeseries Graph
23 (1 Low)29 (1 Low)n/m10 (1 Low)18 (2 Low)
*2
22/04/2025
09:00:00
London Honor Oak Park
Timeseries Graph
53 (2 Low)n/mn/m8 (1 Low)10 (1 Low)
*2
22/04/2025
09:00:00
London Marylebone Road
Timeseries Graph
n/a33 (1 Low)3 (1 Low)12 (2 Low)25 (2 Low)
*1
22/04/2025
09:00:00
London N. Kensington
Timeseries Graph
37 (2 Low)26 (1 Low)n/a8 (1 Low)12 (1 Low)
*2
22/04/2025
09:00:00
London Teddington Bushy Park
Timeseries Graph
n/mn/mn/m8 (1 Low)13 (1 Low)
*2
22/04/2025
09:00:00
London Westminster
Timeseries Graph
42 (2 Low)17 (1 Low)n/m9 (1 Low)n/m 22/04/2025
09:00:00
Southwark A2 Old Kent Road
Timeseries Graph
n/m23 (1 Low)n/mn/m16 (1 Low)
*1
22/04/2025
09:00:00

» 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