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2 Hardwick Hill, Chepstow 2 Hardwick Hill, Chepstow

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 (986 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

2 Hardwick Hill, Chepstow

NO2 Diffusion Tube sites
2 Hardwick Hill, Chepstow in 2017

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Nitrogen dioxide

Date NO2 Units
04/01/2017  70* ugm-3
01/02/2017  65* ugm-3
01/03/2017  60* ugm-3
29/03/2017  61* ugm-3
26/04/2017  69* ugm-3
31/05/2017  60* ugm-3
28/06/2017  61* ugm-3
02/08/2017  56* ugm-3
30/08/2017  52* ugm-3

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

Use the buttons above to view data for years between 2005 and 2017

Further data and graphs may be downloaded here.

For more information on this monitoring data please contact this local authority at environmentalhealth@monmouthshire.gov.uk