National Weather Service United States Department of Commerce

Storms, Potentially, Significant in the Northern Tier; Fire Weather Threats in the West

An upper level system in the northwestern U.S. will produce another day of thunderstorms across the West and into the Central U.S. Primary threats will be damaging winds and large hail. Very large hail and significant winds will be possible from the Northern Rockies into the Northern Plains. Strong winds and dry thunderstorms keep fire weather threats elevated to critical in the Great Basin. Read More >

Mixing Ratio

by Tim Brice and Todd Hall
Enter a temperature and a pressure or a dewpoint and a pressure or both a temperature and a dewpoint and a pressure:
Mixing Ratio
If you want the saturated mixing ratio enter the air temperature:  saturated mixing ratio:
Fahrenheit Celsius Kelvin grams per kilogram
If you want the actual mixing ratio enter the dewpoint:  actual mixing ratio:
Fahrenheit Celsius Kelvin grams per kilogram
Enter your actual station pressure (not the altimeter setting):  relative humidity - requires both temp and dewpoint
in of mercury mm of mercury millibars (hPA) %
If you enter both a temperature and dewpoint you'll get a bonus answer.  


What is the formula for the mixing ratio script?