National Weather Service United States Department of Commerce

Rain Continues From Mid-Atlantic to Southern New England Sunday; Ice on the Northern Edge; Northwest to See More Rain and Snow

A storm system will cross the Mid-Atlantic region then shift south of New England through Sunday with widespread rain. On the northern edge, freezing rain and snow will be possible from Upstate New York into interior southern New England. On the West Coast, deep moisture ahead of a cold front will bring rain, high elevation snow, and gusty winds into Sunday. 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?