GWRC has a monitoring project that is mea.uring air quality (NO2) using low cost tubes around the CBD as a pilot project that will give us a good idea of where the “hot-spots” are. As part of this work NIWA is going to be advising us about the feasibility of supplementing our particulate monitoring at our inner city station with cheaper particulate sensors that could deployed at other locations the city.
Toronto has recruited residents from South Etobicoke to walk and cycle around their community with air monitors that measure and map what they have been breathing. It’s the first project of its kind in Canada and the results have been amazing.
These type of sensors are very useful (if you have a lot of them deployed in different areas) to show how air quality varies quite considerably over short distances and short time frames. You get a good feel for relative concentrations rather than absolute. Plus they are also great for community engagement and involvement.
However, they have a short battery life and are not that accurate.