Air Density Online

Main News

What’s new – May 2019

By Jennifer on May 1st, 2019 in Main News, Site News

Lots more tracks have been added and more are getting added all the time. We are working on more developments with our track list. We can add your track if you don't see it.

Have you visited our partner site, We sell books related to engine tuning and reading the weather. We also have a twice-a-year newsletter on that site that features tips and tricks. Read our recent newsletters and sign up.


By Jennifer on April 23rd, 2019 in Main News, Site News

Have you heard about our mechanical fuel injection jetting calculator? We developed it to be a quick, easy alternative to traditional jetting software and usable on any smartphone. If you've been thinking about giving it a try, sign up for our free trial:

ProCalc free trial

With our ProTune package we can set up your system for you. You will get one on one assistance tailored to your setup. As always, if you have any questions or comments, send them over.

Our latest article on

By Jennifer on April 10th, 2019 in Info and Education, Main News, Site News

Check out our latest article featured on

Air Density Tuning at MLRA Lucas Oil Speedway Oval Track, April 12-13, 2019 presented by

This is our second article with them and just the latest article we've written over the years. If you'd like to see the rest of our articles, check out our articles page.

What’s New – April 2019

By Jennifer on April 1st, 2019 in Main News, Site News

We are developing content left and right. ProCalc users can now populate the weather in each calculator from the location they are at. We are working on developing oxygen/fuel ratio as a companion to air/fuel ratio. We have several articles coming out in the coming months. And... we are adding tracks like crazy!

Here are some of the tracks we added in March:

We are now adding all motorsports tracks to the list. If you race at a Nascar, Formula 1, karting, or any other track, we want to add it. As usual, if you race at a dragstrip or circle track, we'll add that as well. Just send us the track name and location.

Announcing: Historic weather!

By Jennifer on March 11th, 2019 in Main News, Site News

It's been a long time coming but we've finally added historic weather options to the site! Visit the tracks list and select [H] next to the track you want to view. From there you can select a past date to view density altitude, air density and grains. Check out our updated post on historical weather data.

Please note that we are still working out some bugs. Test it out and let us know if you encounter any issues.

What’s new for March 2019

By Jennifer on March 1st, 2019 in Main News, Site News

Coming soon is the ability to get air density and density altitude for past dates. There have been some delays but it will be up soon. We also have some more updates in the works. In the meantime, we added a couple new tracks this month:

Let us know and we'll add your track too.

Review for the racing season

By Jennifer on February 20th, 2019 in Info and Education, Main News

We've written several articles for EngineLabs that feature information about engine tuning. When gearing up for the racing season, check these out:

You can view the full list of articles we've written on our informational articles page.

Upcoming Events

By Jennifer on February 11th, 2019 in Events, Main News

New for 2019! We are listing events along with links to the weather for that track. Check out what we have so far:

2019 Drag Racing Schedule

If you would like to see your track's upcoming events listed, let us know.

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