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

Oct 2, 15 - New tracks added in September

A couple of new tracks were added in September bringing us close to 400 total tracks in our list. The tracks added were:

If you're track isn't already in our list, send it over and we'll add it ASAP!

Sep 18, 15 - Tracks pages are working again!

After some brief downtime as a result of a problem with a weather feed, the tracks pages are back up and running. Please bear with us while we sort out a few remaining details.

Thank you for your patience!

Sep 2, 15 - Tracks added in August

A few new tracks were added in August. Check them out or check out all of our tracks.

If you'd like to see your track added to the list, contact us with your track's name and location and we'll add it ASAP.

Aug 17, 15 - Online engine jetting for dragsters

Do you use our tracks pages to check the weather on race day? Give our ProCalc a try to get even more custom data for each pass. Our calculators are geared towards cars with mechanical fuel injection running methanol, racing gas, or even nitro.

Learn more here or try it free for 30 days!

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