The new PurpleAir air quality sensor has been live since December. The sensor has been working very well so far.
check it out here:
Click on the number circle on the map of Didsbury to bring up the data from my sensor. Ignore the legend table on the left side.
The air quality has been very good for the most part but have seen some spikes. So far the poor air quality days have been due to wood stove smoke or local farm burning cut brushes. Seen a few days when the southeast winds are blowing that the air quality becomes poor. Not sure what pollutant is causing this spike.
If heading outside to exercise, it is worth while to check the air quality and then plan according.