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

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!


Aug 4, 15 - Tracks added in July

A few more tracks were added to the tracks page page. These pages are useful for getting current weather information including air density, grains of water, and density altitude. Currently we have 384 tracks listed including dragstrips, circle tracks, and road courses. Check out these tracks that were added in July:

If you have a track that's not in the list, let us know and we'll add it as soon as possible!


Jul 6, 15 - New Australian Tracks added

We added a number of Australian tracks over the last couple of weeks. (read more...)


Jun 29, 15 - Featured Track: Atlanta Dragway

Offical site: Atlanta Dragway

Get current weather information here


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