Absolute Humidity Calculator
Posted by Dinesh onCalculate measure of water vapor (moisture) in the air, regardless of temperature using this simple absolute humidity calculator.
Absolute humidity is the mass of water vapor divided by the mass of dry air in a certain volume of air at a specific temperature.
Density of moisture (water vapor) per unit volume of air, expressed usually as kilogram per cubic meter (kg/m3). In comparison, relative humidity is the ratio (expressed as a percentage) of the water vapor in the air at a certain temperature and pressure to the maximum water vapor it can contain at the same temperature and pressure; and specific humidity is the ratio of water vapor in the air to the total mass of the air and water vapor.
Calculate Absolute Humidity
Example:
The ambient temperature is 20°C and the relative humidity is 80%. Calculate absolute humidity:
Pw = Pws(20°C) · 80/100 = 18.7 hPa
A = 2.16679 · 1870/(273.15+20) = 13.82 g/m3