Air Density Online

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Our latest article for

By Jennifer on October 15th, 2019 in Features, Info and Education, Main News

We did a follow up article for RacingJunk regarding reading the weather and applying it to an engine tuneup. The article features the MWPMS ProMod race at Texas Motorplex from last year and this year.

Air Density Tuning for MWPMS ProMod Drag Race Cars at the Texas Motorplex’ Mello Yellow NHRA Fall Nationals

What’s new in October

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

We are updating the list of tracks and cleaning out any information that is outdated. If you're track has incorrect information, let us know. We are also adding tracks so... send us any tracks you don't see listed! Tracks that were added or updated last month include:

We're working on a lot of new upgrades to the site over the next few months as well. Lots of exciting stuff in store!

Engine Tuning Weather Information

By Jennifer on September 23rd, 2019 in Main News

We've written several articles with lots of information about weather and engine tuning. Check out some of our articles and let us know if there are any other articles you'd like to see from us.

Articles by

Follow Us on Facebook

By Jennifer on September 11th, 2019 in Main News

Stay updated about site updates and new articles we've written. Follow us on Facebook and share it with your friends. We'd really appreciate it.

Air Density Online on FaceBook

What’s new in September

By Jennifer on September 2nd, 2019 in Main News, Site News

We hope you're having a good labor day and getting in the back-to-school groove. There are several new tracks on the site and we are working on some more upgrades behind the scenes. If there is a track you'd like added, let us know and we'll add it.

Using this site with a Kestrel Portable Weather Station

By Jennifer on August 22nd, 2019 in Info and Education, Main News

Air Density Online provides weather data for racing engine tuning and we hope it's useful for anyone using it. However it is one tool in the engine tuner's arsenal and can be used in conjunction with other tools out there. Many times, a portable weather station like a Kestrel unit is used in in addition to or instead of a site like this.

Benefits of a Portable Weather Station

This site gets it's weather information from a third party resource. That data comes from several weather stations around the area of the track and is averaged to provide targeted data. We then calculate air density, density altitude, grains, and other tuning values. While this is a good way to get data while not actually being at the track, it may not completely accurate. That's where a portable weather station comes in. When getting ready for your next run, having current weather data is beneficial for accurate tuning. A portable weather station will give data that is current and local to the point you're standing at.

Read the rest of this article » – Article Series

By Jennifer on August 12th, 2019 in Info and Education, Main News

Several months ago we completed a series of articles that we've published on

Numerous sources contributed to this article series. They are listed here.

What’s new for August

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

Here's a list of tracks we added in July.

We are adding tracks of all types from all over the world. If you don't see your track listed on our site, let us know and we'll add it.

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