Calculate Air Density and Compare with Other Location
Humidity and Density Altitude are included in the calculations now. Be very careful of using Density Altitude for anything other than viewing it as an interesting number. It has little bearing on setting race car fuel parameters. OK, maybe I'm a little too hard on the old standby of Density Altitude, but don't use it to ratio or factor anything. It just gives you an idea of what altitude you might be if the day was the same as "Standard Day". Use Air Density! Air Density (air only part of mixture), which is what is displayed, is the critical atmospheric parameter if you want to know how much air is available to go into the engine at different conditions. Even then don't factor by Air Density, use some sort of fuel system calculator (like the one on the previous page) to move the flow to a higher or lower value that you may need. If you want to read my take on humidity and its effect read here Discussion.