National Weather Service United States Department of Commerce

Wintry Weather Across Wide Swaths of the Country; Heavy Rain in the Mid South

A developing storm will bring wintry conditions from the Midwest to the Mid-Atlantic, including into the National Capital Region; and heavy rain that may cause flash flooding across the Mid-South. In the West, another storm will slide south along the coast with low elevation snow, and 1 to 2 feet in the mountains. Heavy rain may also cause flash floods on the western Hawaiian Islands. 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?