Hi @Josh_PurpleAir,
Thank you for the help. I have collected the list of sensors for a given bounding, and I have created a group as suggested in other posts. I am however unable to get historical data of sensors (2018 - 2021) in the San Francisco region. Is it possible that the PurpleAir sensors were not setup then, if not kindly let me know if I am missing something. I am following the code mentioned in Issue #3726