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Corner of Broomfield and Bartlett St Corner of Broomfield and Bartlett St

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

Corner of Broomfield and Bartlett St

NO2 Diffusion Tube sites
Corner of Broomfield and Bartlett St in 2017

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Nitrogen dioxide

Date NO2 Units
04/01/2017  53 ugm-3
01/02/2017  46* ugm-3
01/03/2017  35* ugm-3
29/03/2017  40* ugm-3
26/04/2017  32* ugm-3
31/05/2017  30* ugm-3
28/06/2017  25* ugm-3
02/08/2017  25* ugm-3
30/08/2017  23* ugm-3
27/09/2017  27* ugm-3

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

Use the buttons above to view data for years between 2008 and 2017

Further data and graphs may be downloaded here.

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