Air Density Calculator

No idea how accurate this is but, it beats carrying a weather station

http://airdensityonline.com

John Myrick wrote: but, it beats carrying a weather station

As a Nitrous guy I pay close attention to how much water vapor is in the air, humidity and saturation. The NA guys are super concerned about DA. I paid like 230 for my hand held Kestrel and it's worth it's weight in gold to me

John Myrick wrote:No idea how accurate this is but, it beats carrying a weather station

http://airdensityonline.com

That will get someone close but, a lot of times the weather conditions will change every ten minutes so, a hand held weather station is "worth its weight in gold" to a lot of SUPER STOCK type racers who want to be as near to exact as possible.

Sometimes, there will even be a pretty major difference between a grassy pit spot and the paved starting line area.

Reading, PA or Atco, NJ before noon come immediately to mind.