Air Density Online

weather calculations for racing engine tuning


Jet your car from anywhere with an internet connection. Have a smartphone? You now have a portable jetting calculator.

for tracks

Real-time density altitude from current weather data at various tracks including: NHRA & IHRA dragstrips, road courses, dirt ovals.


Get your MFI fuel system setup programmed into ProCalc. Even get your dyno data added. You get 1 year of access to ProCalc too!

November 11, 2019

Updates and more

We are doing a big push to add tracks and make updates to the site. Here are the tracks we've added in the last couple of weeks.

We are now including boat racing locations in our list of tracks. Here are a few that we've added so far.

If you've got a track we don't have on our site, let us know. We want to add motorsports tracks from all over the world, including boat racing locations and other forms of motorsports.

November 1, 2019

What’s new – November 2019

Happy Halloween to everyone. We hope you had a fun, spooky holiday.

We're going to be at the NHRA Nationals in Las Vegas the first weekend in November. If you're there and you recognize us, say hi! Need the weather for Las Vegas?

Here are some of the tracks we added in October.

October 22, 2019

Happy Halloween

Happy Halloween from Air Density Online

Happy Halloween from Air Density Online! May you have a scary day.

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