Online weather calculations for racers
Free Weather Calculator
This page calculates weather data including air density and density altitude based on weather data you input.
Free Weather for TracksThis page features a list of tracks whose weather data is pulled from the National Weather Service and used to provide real-time information on current weather conditions at that track.
Online Jetting Calculator
Jet your car from anywhere with an internet connection! Have a smartphone? You now have a portable jetting calculator!
All for $99.99 per year
Special offer: $59.99 per year
Current users login here
Jul 30, 11 - There are now 200 tracks listed on the tracks page. In addition, we’ve recently implemented an option to filter tracks by dragstrips or by circle/oval tracks. If your track isn’t listed yet and you’d like it added, please contact us with the track name and location and it will be added shortly.
Mar 3, 11 - We hope you are gearing up for the 2011 racing season. Our pro calculators can help you tune your engine and books from racecarbook.com will help you learn the ins and outs of tuning your engine.
Feb 1, 11 - We have decided to extend the reduced price of our pro calculator for another 4 months. The price for 1 year of access to our pro calculators will continue to be $59.99 until June 1. Get more information.
Jan 2, 11 - All of us at airdensityonline.com would like to wish everyone a happy new year. We hope this year brings fast speeds and fun times!
Thanks for visiting. View the FAQ section in the about page for more information about using this site.