Air Density Online

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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.

Get quick access to weather at your favorite track

By Jennifer on July 22nd, 2019 in Main News

Note: this applies to iPhones only. However, there is a similar task for Android devices as well.

Figure 1

Did you know you can save a quick link to the weather on your favorite track on your iPhone's home page? It's pretty easy but you have to know where to look. Follow these steps.

Read the rest of this article »

New article in Dragzine

By Jennifer on July 11th, 2019 in Main News

Our latest article just came out in Dragzine about track prep and the weather. Check it out.

Be Ready for Race Day by Reading the Weather.

If you haven't checked before, we list this and all articles we've written on our articles page.

And if you want even more information, check out Over there, you can get much more information about high performance engine tuning.

What’s new in July

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

This month we are partnering with Kestrel Instruments to bring you weather at all our tracks. The weather on our site is updated every 20 minutes. If you've ever wanted targeted, up-to-the-minute weather, check them out!

Here are the tracks added in June. If you don't see your track listed, let us know and we'll add it to the site.

Check out our latest article for EngineLabs

By Jennifer on June 25th, 2019 in Info and Education, Main News

Do you have problems with detonation in your engine? Check out our latest article for

Misunderstood Causes of Denotation in High Performance Applications

Using this site – the future and the past

By Jennifer on June 20th, 2019 in Main News

If you're a little unsure about how best to utilize the weather data provided on this site, you might get a lot out of a recent article we wrote for Air Density Tuning at MLRA Lucas Oil Speedway Oval Track, April 12-13, 2019 presented by This article highlights how to use parts of this site to prepare for a racing outing.

From there, you can get historical weather data and a 36 hour forecast of air density and density altitude on our site. Check out the US track weather and the International track weather to get more weather data.

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