National Weather Service United States Department of Commerce

Inclement Weather For California; Fire Weather Threat In The High Plains

A strong storm and frontal system will move through Central and Southern California over the next two days, perhaps lingering through midweek. Expect heavy snowfall across the Sierra into the Southern California mountains and heavy rainfall which may cause flooding and debris flows in Southern California. There is an elevated to critical fire weather risk across the Southern High Plains. Read More >

Density Altitude

by Tim Brice and Todd Hall

 

 
 
 
Enter the air temperature and choose a unit: Density Altitude in feet:
Fahrenheit Celsius Kelvin ft
Enter the actual station pressure (not the altimeter setting) and choose a unit: Density Altitude in meters:
in of mercury mm of mercury millibars (hPA) m
Enter the dewpoint and choose a unit:  
Fahrenheit Celsius Kelvin  

 

What is the formula for the density altitude script?