Event:
Indianapolis 500 practice: May 14-17, 2019
Indianapolis 500 qualifying: Sat May 18, Sun May 19
Indianapolis 500 practice: Mon May 20
Indy 500 Miller Lite Carb Day: Fri May 24
Indy 500 Firestone Legends Day: Sat May 25
103rd running of the Indianapolis 500 high speed circle race: Sun May 26

links:
current imperial weather units with map & weather forecast description: https://airdensityonline.com/track-results/Indianapolis_Motor_Speedway/
current metric weather units with map & weather forecast description: https://airdensityonline.com/track-results-metric/Indianapolis_Motor_Speedway/
historical weather hourly data example: https://airdensityonline.com/track-history/Indianapolis_Motor_Speedway/2019-05-01/
forecast weather hourly data: https://airdensityonline.com/track-forecast/Indianapolis_Motor_Speedway/

Air density data for tuning to those spark plug readings, aerodynamics, & tire drift.