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 8am Wed 9th Jul 2025

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South West

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
Barnstaple A39
Timeseries Graph
n/mn/mn/m3 (1 Low)6 (1 Low)
*2
09/07/2025
08:00:00
Bath A4 Roadside
Timeseries Graph
n/m24 (1 Low)n/mn/mn/m 09/07/2025
08:00:00
Bournemouth
Timeseries Graph
43 (2 Low)6 (1 Low)n/m5 (1 Low)n/m 09/07/2025
08:00:00
Bristol St Paul's
Timeseries Graph
21 (1 Low)38 (1 Low)n/m4 (1 Low)12 (1 Low)
*1
09/07/2025
08:00:00
Bristol Temple Way
Timeseries Graph
n/m51 (1 Low)n/m4 (1 Low)11 (1 Low)
*2
09/07/2025
08:00:00
Charlton Mackrell
Timeseries Graph
33 (1 Low)4 (1 Low)n/m3 (1 Low)6 (1 Low)
*2
09/07/2025
08:00:00
Cheltenham A40 Gloucester Road
Timeseries Graph
n/mn/mn/m3 (1 Low)n/m 09/07/2025
08:00:00
Christchurch Barrack Road
Timeseries Graph
n/m14 (1 Low)n/m7 (1 Low)n/m 09/07/2025
08:00:00
Exeter Roadside
Timeseries Graph
26 (1 Low)12 (1 Low)n/mn/mn/m 09/07/2025
08:00:00
Gloucester Tredworth
Timeseries Graph
n/mn/mn/m3 (1 Low)9 (1 Low)
*2
09/07/2025
08:00:00
Honiton
Timeseries Graph
20 (1 Low)16 (1 Low)n/m4 (1 Low)6 (1 Low)
*2
09/07/2025
08:00:00
London Farringdon Street
Timeseries Graph
n/mn/an/m8 (1 Low)n/m 09/07/2025
08:00:00
Plymouth Centre
Timeseries Graph
44 (2 Low)n/an/m5 (1 Low)20 (2 Low)
*2
09/07/2025
08:00:00
Plymouth Tavistock Road
Timeseries Graph
n/m11 (1 Low)n/mn/mn/m 09/07/2025
07:00:00
Saltash Callington Road
Timeseries Graph
n/mn/mn/m3 (1 Low)7 (1 Low)
*1
09/07/2025
08:00:00
Swindon Walcot
Timeseries Graph
28 (1 Low)14 (1 Low)n/m4 (1 Low)10 (1 Low)
*2
09/07/2025
08:00:00
Yarner Wood
Timeseries Graph
36 (2 Low)1 (1 Low)n/m2 (1 Low)4 (1 Low)
*2
09/07/2025
08:00:00

» 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