Air quality monitoring data

We monitor local air quality using both continuous analysers and diffusion tubes.

Diffusion tubes

Diffusion tubes, which are located at a number of sites throughout the borough and monitor nitrogen dioxide, benzene and polycyclic aromatic hydrocarbons.

The diffusion tube results can be viewed on the following pages:

Continuous analysers

Monitoring of air quality in the Borough takes place 24 hours a day. Currently the section has one mobile monitoring unit and two static units. One is located in Castelnau outside the Public Library and the other is at the Wetlands site. The mobile unit is moved around the Borough to different locations.

Continuous Monitoring of the following pollutants is carried out:

  • Nitrogen dioxide NO2
  • Ozone O3
  • Carbon Monoxide CO
  • Particulates PM10's

View the latest air quality results.

Historical Monitoring

The following list gives the results for our mobile air quality units dating back to 1998.

Updated: 27 February 2018