The council has deployed over 60 nitrogen dioxide diffusion tubes, mostly close to busy roads. The tubes are changed on a monthly basis and analysed by Gradko Laboratories of Winchester.

All current and historical (discontinued) nitrogen dioxide diffusion tube locations are available to view on the interactive map below and a list of annual NO2 diffusion tube reports for Southampton can be found on the reports page.

Use the link below to view the location of the nitrogen dioxide diffusion tubes on an interactive map.

View the interactive map

Document Type Size
SCC NO2 Diffusion Tube Data - December 2019 updatexlsx56KB