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

Jun 6, 16 - New feature for Pro-Calc users

We have added a different weather service for registered Pro-Calc users! Unregistered users will still see the feeds from the National Weather Service which is only updated hourly. Registered user who view the tracks section will get weather updated approximately every 20-30 minutes.

We also have an experimental feature in the free calcs section in which registered users can enter an address and get air density and density altitude values for that location!

If you'd like to give it a try, we have a 30 day trial available. sign up here!


May 27, 16 - Lots of tracks added in May

We added 10 new tracks to the tracks page this month. Check them out and if your track isn't in the list, let us know and we'll add it too!


May 1, 16 - Major site updates

Over the past couple of months we have made several updates to the site. There have been a few stumbling blocks along the way but we hope these changes will make the site much better going forward.

Please note: one of the updates we made was to the structure of links for each track, both for the current weather and for the forecasted weather. Please update your bookmarks if you have an old link saved.

An incomplete list of other updates we've made:

  • Sunrise and sunset times for each track
  • Pro-Calc users: an experimental weather calculator on the free calcs page
  • Pro-Calc users: ability to copy an existing baseline to save as your 2nd or 3rd baseline
  • Pro-Calc users: sample baselines that will prepopulate your baseline for your reference
  • Pro-Calc users: a completely overhauled help section
  • Several bug fixes and usability fixes

Coming soon: Help videos to assist in setting up and using Pro-Calc

Thanks for bearing with us over the last couple of months. If you'd like to give our Pro-Calc online jetting calculators a try, you can sign up for a free 30 day trial.

If you have any comments or questions regarding these updates or anything on the site, feel free to contact us.


Apr 29, 16 - Tracks added in April

We added a few new tracks in April. Check these out:

We have over 400 tracks listed with current weather information and forecasted weather. View our full list of tracks on our tracks page.


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