1. What is Dew Point?

The dew point is the temperature to which air must be cooled to become saturated with water vapor. When cooled further, the airborne water vapor will condense to form liquid water (dew). It's a key parameter in meteorology and HVAC applications.

2. How Does the Calculator Work?

The calculator uses the simple dew point approximation formula:

Where:

• \( Td \) — Dew point temperature (°C)
• \( T \) — Air temperature (°C)
• \( RH \) — Relative humidity (%)

Explanation: This formula provides a quick estimate of dew point when precise measurements aren't available. For more accurate calculations, more complex equations like the Magnus formula are used.

3. Importance of Dew Point

Details: Dew point is important for weather forecasting, aviation, preventing condensation in buildings, industrial processes, and determining human comfort levels. High dew points indicate muggy conditions.

4. Using the Calculator

Tips: Enter temperature in Celsius and relative humidity as a percentage (0-100%). The calculator will estimate the dew point temperature in Celsius.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this simple formula?
A: It provides a reasonable estimate (±1°C) for typical conditions (10-30°C, 40-80% RH) but becomes less accurate at extremes.

Q2: What's the difference between dew point and humidity?
A: Relative humidity depends on temperature, while dew point is an absolute measure of moisture in the air.

Q3: What does a high dew point indicate?
A: High dew points (>18°C) feel humid and uncomfortable, while very high (>24°C) feel oppressive.

Q4: Can dew point be higher than temperature?
A: No, by definition dew point cannot exceed the current air temperature.

Q5: When does dew form?
A: Dew forms when surfaces cool to the dew point temperature, causing water vapor to condense.