How To Calculate Humidity From Dry And Wet Temperature

Introduction & Importance

Calculating humidity from dry and wet temperature is crucial in meteorology, agriculture, and many other fields. It helps in understanding and predicting weather patterns, optimizing crop growth, and ensuring comfortable living conditions.

How to Use This Calculator

1. Enter the dry and wet temperatures in degrees Celsius.
2. Click the ‘Calculate’ button.
3. View the results below the calculator.

Formula & Methodology

The formula to calculate humidity from dry and wet temperature is derived from the Magnus formula:

e = 6.11 * exp((17.27 * T_w) / (T_w + 237.3)) * (1 – 0.38 * exp((17.27 * T_d) / (T_d + 237.3)))

Where:

• e is the vapor pressure (in hPa),
• T_w is the wet temperature (in °C),
• T_d is the dry temperature (in °C),

Comparison of Humidity Calculation Methods

Method	Advantages	Disadvantages

Global Average Humidity Levels

Region	Average Humidity (%)

Expert Tips

• Always use accurate temperature measurements for reliable results.
• Consider using a psychrometer for direct humidity measurements.

Interactive FAQ

What is the difference between dry and wet temperature?

Dry temperature is the ambient air temperature, while wet temperature is the temperature of a wet bulb thermometer, which is cooled by evaporating water.