Dew Point Calculator
Calculate the dew point temperature from air temperature and relative humidity. Understand comfort levels and moisture content.
Quick Presets
Dew Point Temperature
16.7°C
62°F
Comfort Level
Humid
Somewhat uncomfortable
Moisture Content
13.79 g/m³
Vapor Pressure
18.97 hPa
Additional Information
Dew point is the temperature at which air becomes saturated and water vapor condenses. It's a better indicator of comfort than relative humidity alone.
What is Dew Point?
Dew point is the temperature at which air becomes saturated with water vapor. When air cools to its dew point, moisture condenses into dew, fog, or clouds. Unlike relative humidity, dew point directly measures actual moisture content.
Dew Point and Comfort
Dew point is better than relative humidity for gauging comfort. Below 10°C feels dry. 10-15°C is comfortable. 16-18°C feels humid. 19-21°C is very humid. Above 22°C feels oppressive. These thresholds help explain why some 80% humidity days feel fine while others are miserable.
Practical Applications
Aviation uses dew point for fog predictions. HVAC systems monitor it to prevent condensation. Painters check dew point before applying coatings. Weather forecasters use it to predict precipitation. Indoor dew points above 15°C can lead to mold growth.