Link to free air density tuning info for drag racing at NHRA drag racing:
Auto Club Raceway NHRA Finals, Nov. 14-17, Pomona, Ca
Map location, air density, density altitude, grains, forecast, historic, & metric data "for good spark plug readings":
https://airdensityonline.com/track-r...way_at_Pomona/
air density density altitude grains forecast:
https://airdensityonline.com/track-f...way_at_Pomona/
air density density altitude grains historical (you can go back to yesterday, last week, several years ago, etc.):
https://airdensityonline.com/track-h...na/2019-11-04/
air density density altitude grains current metric:
https://airdensityonline.com/track-r...way_at_Pomona/
racingjunk air density article:
https://www.racingjunk.com/news/2019...all-nationals/