Air Density Online

weather calculations for racers

Free Weather Calculations based on weather data you input
Real-time information based on current weather observations at various race tracks.
Jet your car from anywhere with an internet connection

May 11, 15 - Featured Track: Wild Horse Pass Motorsports Park

Wild Horse Pass Motorsports Park features numerous tracks including a dragstrip, watersports lake, and road courses. They host everything from off road events to NHRA races.

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May 4, 15 - New feature

Earlier this year we added a new feature to the pro-calc section of the site. There is now an option for a pump saver or 2nd high speed bypass. We have been testing it over the last couple of months and it is working great!

If you'd like to give the pro-calc section a try, we offer a free 30 day trial.

Jan 16, 15 - A Question for Australian Users

The bulk of the tracks featured on this site are for US tracks and, therefore, use imperial measurements and fahrenheit temperatures. Would users outside the US get more use out of this site if there was an option to convert data into metric and centrigrade units?

If you have thoughts on this, please contact us. We appreciate your feedback!

Sep 18, 14 - small site updates

A few small site updates have been added including a brief introduction to the people behind this site. If you've ever emailed this site, you talked to one or both of us. Learn a little more here.

Thanks for visiting. View the FAQ section in the about page for more information about using this site.