1. What is Dew Point?

The dew point (Td) is the temperature to which air must be cooled to become saturated with water vapor. When cooled further, water vapor will condense to form liquid water (dew). It's a measure of atmospheric moisture.

2. How Does the Calculator Work?

The calculator uses the Magnus formula:

Where:

• \( Td \) — Dew point temperature (°C)
• \( RH \) — Relative humidity (%)
• \( T \) — Air temperature (°C)
• 17.625 and 243.04 — Magnus coefficients for water

Explanation: The formula calculates the temperature at which water vapor in the air begins to condense based on current temperature and humidity.

3. Importance of Dew Point Calculation

Details: Dew point is crucial for weather forecasting, HVAC system design, industrial processes, and understanding human comfort levels. It's a better indicator of humidity than relative humidity alone.

4. Using the Calculator

Tips: Enter temperature in °C and relative humidity in percentage (0-100%). The calculator will compute the dew point temperature in °C.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between dew point and relative humidity?
A: Relative humidity depends on temperature, while dew point is an absolute measure of moisture in the air.

Q2: What does a high dew point indicate?
A: Higher dew points mean more moisture in the air. Above 18°C (65°F) feels humid, above 21°C (70°F) feels oppressive.

Q3: Can dew point be higher than temperature?
A: No, this would require over 100% relative humidity, which is physically impossible in normal conditions.

Q4: Why is dew point important for aviation?
A: It helps predict fog formation and potential icing conditions on aircraft.

Q5: How does dew point affect human comfort?
A: Higher dew points make it harder for sweat to evaporate, making hot weather feel more uncomfortable.