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Hafod Post Office, Hafod Hafod Post Office, Hafod

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 (1018 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

Hafod Post Office, Hafod

NO2 Diffusion Tube sites
Hafod Post Office, Hafod in 2013

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Nitrogen dioxide

Date NO2 Units
04/01/2013  64* ugm-3
11/01/2013  95* ugm-3
25/01/2013  81* ugm-3
01/02/2013  53* ugm-3
08/02/2013  77* ugm-3
15/02/2013  67* ugm-3
22/02/2013  67* ugm-3

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

Use the buttons above to view data for years between 1996 and 2013

Further data and graphs may be downloaded here.

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