Probably worth noting that the South Coast AQMD tests various PM sensors from consumer-grade to lab-grade and publishes results [0]. Lots of cheaper consumer-gr

Probably worth noting that the South Coast AQMD tests various PM sensors from consumer-grade to lab-grade and publishes results [0]. Lots of cheaper consumer-grade sensors outperform the expensive lab-grade sensors. [0] http://www.aqmd.gov/aq-spec/evaluations/summary-pm http://www.aqmd.gov/aq-spec/evaluations/summary-pm