National Weather Service United States Department of Commerce

Wet Pattern Out West; Wintry Weather in Central U.S. headed into the Northeast

A series of weather warm weather systems will produce rain, heavy at times, which when combined with high snow levels, could lead to flooding and flash floods across northern California and the Pacific Northwest. A slow moving system will spread wintry conditions towards the Appalachians and Northeast, with areas of heavy rain into the Mid-Atlantic. 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?