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Cardiff Road, Llandaff Cardiff Road, Llandaff

This section of the website allows you to choose a type of monitoring site, and then details for individual sites. Once you have chosen a site, its location will appear on the map above.

Choose a different type of monitoring site:
Hydocarbon Diffusion Tube sitesHydocarbon Diffusion Tube sites (8 Sites)
NO2 Diffusion Tube sitesNO2 Diffusion Tube sites (1001 Sites)
O3 Diffusion Tube sitesO3 Diffusion Tube sites (6 Sites)
SO2 Diffusion Tube sitesSO2 Diffusion Tube sites (9 Sites)

Non-Automatic Monitoring Sites in Wales

Cardiff Road, Llandaff

NO2 Diffusion Tube sites
Cardiff Road, Llandaff in 2014

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Nitrogen dioxide

Date NO2 Units
04/02/2014  46 ugm-3
05/03/2014  34 ugm-3
02/04/2014  51 ugm-3
30/04/2014  49 ugm-3
28/05/2014  36 ugm-3
30/07/2014  38 ugm-3
27/08/2014  27 ugm-3
01/10/2014  53 ugm-3
29/10/2014  75 ugm-3
03/12/2014  73 ugm-3

Ratification Status:
» Red* - Provisional
» Green - Ratified

Use the buttons above to view data for years between 2001 and 2018

Further data and graphs may be downloaded here.

For more information on this monitoring data please contact this local authority at