Free Dew Point Calculator - Humidity Made Clear
Calculate dew point from temperature and relative humidity. Understand moisture conditions for weather, HVAC, and preventing condensation.
Quick Answer
Dew point indicates air moisture. Below 55°F is comfortable, 55-65°F is muggy, above 70°F is oppressive. At dew point = air temperature, humidity is 100%.
Key Facts about Dew Point Calculator:
- Dew point ≤ air temperature always
- At dew point, RH = 100%
- < 55°F dew point = comfortable
- > 70°F dew point = oppressive humidity
- Important for preventing condensation
Why Use Our Dew Point Calculator?
Complete humidity analysis:
Dew Point
Calculate dew point temperature.
Humidity
Relative humidity analysis.
Comfort Level
Assess moisture comfort.
HVAC Planning
Control indoor moisture.
Instant Results
Get dew point immediately.
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How to Dew Point Calculator in 3 Easy Steps
Calculate dew point:
Enter Temperature
Current air temperature.
Enter Humidity
Relative humidity percentage.
Get Dew Point
See dew point and comfort level.
Understand Humidity
Comfort level assessment
Condensation prevention
HVAC optimization
Weather understanding
Common Use Cases for Dew Point Calculator
Perfect for:
Frequently Asked Questions
Everything you need to know about our dew point calculator
What is dew point?
Temperature where water vapor condenses; higher = more humid feel
Dew point is the temperature at which air becomes saturated and water vapor condenses into dew. Higher dew points feel more humid and uncomfortable.
How does dew point relate to comfort?
<55°F comfortable, 55-65°F humid, >70°F oppressive
Dew point <55°F: comfortable. 55-65°F: slightly humid. 65-70°F: humid and uncomfortable. >70°F: oppressive, tropical humidity.
Why is dew point better than relative humidity?
Dew point measures actual moisture; RH varies with temperature
Dew point directly measures moisture content. Relative humidity depends on temperature - 50% RH at 90°F feels muggier than 50% RH at 60°F.
Still have questions? Try the tool yourself!
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