National Weather Service United States Department of Commerce

Inclement Weather in the Mid-Atlantic and Northeast; Below Normal Temperatures Continue

A strong cold front will bring heavy wet snow from the eastern Great Lakes into northern New England and strong thunderstorms with damaging winds in the Mid-Atlantic and Northeast. Well below average temperatures will continue behind this storm system or east of the Rockies, as numerous record low temperatures are likely. Critical fire weather conditions expected in the Southwest and Southeast. 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?