National Weather Service United States Department of Commerce

Severe Weather Threat Shifted to the Southern Plains and Mid-South; Critical Fire Weather in the Southern Plains

Multiple rounds of strong to severe thunderstorms may produce very large hail, swaths of damaging wind, a few tornadoes and heavy rain across parts of Texas into the lower Mississippi and Tennessee Valleys. Gusty winds and dry conditions will continue to promote elevated to critical fire weather conditions 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?