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Virtual Temperature Calculator

This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to give the virtual temperature of a parcel of air. Virtual temperature is a fictitious temperature that takes into account moisture in the air. The meteorologists' definition of virtual temperature is the temperature that dry air would have if its pressure and specific volume were equal to those of a given sample of moist air. Virtual temperature correction allows meteorologists to use the same temperature equation for dry air even though moisture is present. The virtual temperature is a calculated (as opposed to measured) value based on the air temperature and the determined water content of the air. The virtual temperature is the temperature of dry air that would have the same density and pressure as the moist air. The term station is the designation for the vertical point that you take your measurements; vertical meaning above (or below) sea level. The absolute air pressure is the calculated air pressure, but not corrected for altitude. It is also called the station pressure in weather reports from NOAA. Here is the current NOAA aviation weather. In our calculator, enter the temperature, station pressure (absolute), and dewpoint; be sure to click on the proper designation if using measurements other than standard in the United States. Click on Calculate and the virtual temperature in the three scales used in Meteorology will be returned. Rankine and Réaumur can be calculated if you wish, using our Celsius, Fahrenheit, Kelvin, Réaumur, and Rankine temperature conversion page.

Meteorology Calculator
Virtual Temperature Required Data Entry
TemperatureFahrenheit CelsiusKelvin
Dewpoint Fahrenheit CelsiusKelvin
Station Pressure in of mercury mm of mercury millibars (hPA)

Calculated Results
Virtual Temperature Calculation = °F
Virtual Temperature Calculation = °C
Virtual Temperature Calculation = °K
Updated 8.17.11

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