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 midnight Sun 20th Apr 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/m9 (1 Low)14 (1 Low)
*2
20/04/2025
24:00:
Bath A4 Roadside
Timeseries Graph
n/m14 (1 Low)n/mn/mn/m 20/04/2025
24:00:
Bournemouth
Timeseries Graph
n/an/an/mn/an/m 02/04/2025
16:00:00
Bristol St Paul's
Timeseries Graph
70 (3 Low)9 (1 Low)n/m6 (1 Low)13 (1 Low)
*1
20/04/2025
24:00:
Bristol Temple Way
Timeseries Graph
n/m14 (1 Low)n/m9 (1 Low)13 (1 Low)
*2
20/04/2025
24:00:
Charlton Mackrell
Timeseries Graph
55 (2 Low)14 (1 Low)n/m9 (1 Low)12 (1 Low)
*2
20/04/2025
24:00:
Christchurch Barrack Road
Timeseries Graph
n/m14 (1 Low)n/m10 (1 Low)n/m 20/04/2025
24:00:
Exeter Roadside
Timeseries Graph
54 (2 Low)20 (1 Low)n/mn/mn/m 20/04/2025
24:00:
Gloucester Tredworth
Timeseries Graph
n/mn/mn/m7 (1 Low)11 (1 Low)
*2
20/04/2025
24:00:
Honiton
Timeseries Graph
56 (2 Low)8 (1 Low)n/m9 (1 Low)12 (1 Low)
*2
20/04/2025
24:00:
Plymouth Centre
Timeseries Graph
69 (3 Low)16 (1 Low)n/m10 (1 Low)14 (1 Low)
*2
20/04/2025
24:00:
Plymouth Tavistock Road
Timeseries Graph
n/mn/an/mn/mn/m 20/04/2025
21:00:00
Saltash Callington Road
Timeseries Graph
n/mn/mn/m8 (1 Low)14 (1 Low)
*1
20/04/2025
24:00:
Swindon Walcot
Timeseries Graph
75 (3 Low)5 (1 Low)n/m8 (1 Low)12 (1 Low)
*2
20/04/2025
24:00:
Yarner Wood
Timeseries Graph
n/a3 (1 Low)n/m8 (1 Low)11 (1 Low)
*2
20/04/2025
24:00:

» 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