Related to PM output, here is a crowdsourced effort to collect air quality data around the world: https://maps.luftdaten.info/#2/0.0/0.0 https://maps.luftdaten

Related to PM output, here is a crowdsourced effort to collect air quality data around the world: https://maps.luftdaten.info/#2/0.0/0.0 https://maps.luftdaten.info/#2/0.0/0.0 Building and deploying your own sensor is pretty easy: https://bergie.iki.fi/blog/microflo-particulate-sensors/ https://bergie.iki.fi/blog/microflo-particulate-sensors/