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South roundabout (40 Towy Terrace) South roundabout (40 Towy Terrace)

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

South roundabout (40 Towy Terrace)

NO2 Diffusion Tube sites
South roundabout (40 Towy Terrace) in 2017

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Nitrogen dioxide

Date NO2 Units
04/01/2017  35* ugm-3
01/02/2017  34* ugm-3
01/03/2017  28* ugm-3
29/03/2017  28* ugm-3
26/04/2017  23* ugm-3
31/05/2017  21* ugm-3
28/06/2017  18* ugm-3
02/08/2017  18* ugm-3

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

Use the buttons above to view data for years between 2011 and 2017

Further data and graphs may be downloaded here.

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