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 11pm Tue 18th Dec 2018

Filter by region:

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
27 (1 Low)48 (1 Low)n/a8 (1 Low)16 (1 Low) 18/12/2018
22:00
Cardiff Newport Road
Timeseries Graph
n/m45 (1 Low)n/mn/m18 (2 Low)
*1
18/12/2018
22:00
Chepstow A48
Timeseries Graph
n/m65 (1 Low)n/m7 (1 Low)18 (2 Low)
*1
18/12/2018
22:00
Cwmbran
Timeseries Graph
44 (2 Low)42 (1 Low)n/mn/mn/m 18/12/2018
22:00
Hafod-yr-ynys Roadside
Timeseries Graph
n/m48 (1 Low)n/mn/mn/m 18/12/2018
22:00
Narberth
Timeseries Graph
69 (3 Low)1 (1 Low)9 (1 Low)3 (1 Low)4 (1 Low)
*3
18/12/2018
22:00
Newport
Timeseries Graph
n/m28 (1 Low)n/m8 (1 Low)14 (1 Low)
*3
18/12/2018
22:00
Port Talbot Margam
Timeseries Graph
52 (2 Low)19 (1 Low)8 (1 Low)8 (1 Low)18 (2 Low) 18/12/2018
22:00
Swansea Roadside
Timeseries Graph
n/m28 (1 Low)n/m7 (1 Low)20 (2 Low)
*2
18/12/2018
22:00

» 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 BAM unheated
  • *3: measurements are PM10 FIDAS