NASA Airathon (2022)
I participated in the NASA Airathon. It had 2 tracks: particulate track and trace gas track.
https://www.drivendata.org/competitions/88/competition-air-quality-pm/
https://www.drivendata.org/competitions/91/competition-air-quality-no2/
I ranked 3rd in the trace gas track and 6th in the particulate track.
My solution is available at this repo: https://github.com/drivendataorg/nasa-airathon/tree/main/no2/3rd%20Place