@Praful_Dodda There is a current issue opened for this: add historic multiple sensor data to PAA · Issue #17 · carlkid1499/purpleair_data_logger · GitHub
The API for historical access is not available at the moment ( Downloaded data not appearing in CSV file - #5 by Ethan_Breinholt). I think you’ll need special access to download historical data. Especially if it is for a big time range. I would suggest reaching out to purple air support for help.
contact@purpleair.com
…
For the python side of things let me look deeper into the code for some of your questions.
Thanks!