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.

  • PM10 data is from a FDMS PM10 instrument type unless specified
  • View the legend
  • Pollutant levels recorded for the hour up to 7pm Mon 6th Apr 2020

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South Wales

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
Cardiff Centre
Timeseries Graph
76 (3 Low)4 (1 Low)3 (1 Low)6 (1 Low)16 (1 Low) 06/04/2020
19:00:00
Cardiff Newport Road
Timeseries Graph
n/m5 (1 Low)n/mn/mn/a 06/04/2020
19:00:00
Chepstow A48
Timeseries Graph
n/mn/an/m7 (1 Low)21 (2 Low)
*1
06/04/2020
19:00:00
Cwmbran
Timeseries Graph
85 (3 Low)5 (1 Low)n/mn/mn/m 06/04/2020
19:00:00
Hafod-yr-ynys Roadside
Timeseries Graph
n/m29 (1 Low)n/mn/mn/m 06/04/2020
19:00:00
Narberth
Timeseries Graph
60 (2 Low)2 (1 Low)4 (1 Low)8 (1 Low)16 (1 Low)
*2
06/04/2020
19:00:00
Newport
Timeseries Graph
n/m8 (1 Low)n/m8 (1 Low)15 (1 Low)
*2
06/04/2020
19:00:00
Port Talbot Margam
Timeseries Graph
69 (3 Low)5 (1 Low)5 (1 Low)12 (2 Low)48 (3 Low)
*1
06/04/2020
19:00:00
Swansea Roadside
Timeseries Graph
n/m4 (1 Low)n/mn/a23 (2 Low)
*1
06/04/2020
19:00:00

» 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