https://community.purpleair.com/
PurpleAir's online "meeting place" can be used to engage with others, share knowledge and discuss, share or learn about air quality projects.
air quality forumpurpleair community
https://www.minneapolismn.gov/government/programs-initiatives/environmental-programs/air-quality/host-air-sensor/
You can sign up to host an air sensor.
hostpurpleairsensorcityminneapolis