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Main Street, Pembrokeshire Main Street, Pembrokeshire
Main Street, Pembrokeshire Main Street, Pembrokeshire

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 (860 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

Main Street, Pembrokeshire


NO2 Diffusion Tube sites
Main Street, Pembrokeshire in 2014

«« 2010 2011 2012 2013 2014 »»

Nitrogen dioxide

Date NO2 Units
06/01/2014  47 ugm-3
05/02/2014  43* ugm-3
05/03/2014  44* ugm-3
30/04/2014  No Data* ugm-3
28/05/2014  44* ugm-3
02/07/2014  38* ugm-3
30/07/2014  45* ugm-3
27/08/2014  40* ugm-3
01/10/2014  48* ugm-3
29/10/2014  No Data* ugm-3

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

Use the buttons above to view data for years between 1996 and 2014

Further data and graphs may be downloaded here.

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