Air Quality Mapping
Diffusion Tube Map
Diffusion tubes measure Nitrogen Dioxide. Nitrogen Dioxide can cause damage to the human body, inflaming the airways and increasing our susceptibility to lung infections and asthma. Approximately 25% of Nitrogen Dioxide in the atmosphere comes from vehicle emissions and the combustion of fossil fuel. Approximate locations of diffusion tubes are indicated by red triangles. Click on a triangle to view the basic details of the tube. By clicking on the tube reference number in the tube details pop-up you can view any diffusion tube monitoring data collected since 2002. This process can be used in the assessment of local air quality trends over a period of time and is refreshed on an annual basis.
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