Dew Point Calculator
Calculate dew point temperature from air temperature and relative humidity using meteorological formulas.
Input Parameters
Most accurate for typical weather conditions
Magnus-Tetens Formula:
α = (17.27 × T)/(237.7 + T) + ln(RH/100)
Td = (237.7 × α)/(17.27 - α)
Results
Dew Point
Celsius
12°C
Fahrenheit
53.6°F
Kelvin
285.1K
Comfort Level
Dry
Comfortable for most people
Absolute Humidity10.6 g/m³
Relative Humidity at Nearby Temperatures
15°C
49%
20°C
36%
25°C
27%
30°C
20%
What is Dew Point Calculator?
Understanding Dew Point
Dew point is the temperature at which air becomes saturated with water vapor and dew begins to form. It's a crucial measurement for understanding comfort levels, weather prediction, and various industrial applications.
Key Concepts
- Saturation: When air can hold no more water vapor at a given temperature
- Condensation: Water vapor turns to liquid when air cools to dew point
- Comfort: Dew point affects how humid air feels to humans
- Weather: Dew point helps predict fog, precipitation, and storm development
Dew Point Comfort Scale
Below 10°C (50°F): Very dry, may cause skin irritation
10-13°C (50-55°F): Comfortable for most people
13-16°C (55-61°F): Pleasant conditions
16-18°C (61-64°F): Still comfortable
18-21°C (64-70°F): Becoming humid
21-24°C (70-75°F): Oppressive
Above 26°C (79°F): Extremely oppressive
FAQ - Dew Point Calculator
Relative humidity is a percentage showing how much water vapor is in the air compared to the maximum at that temperature. Dew point is the actual temperature at which condensation occurs. Dew point is often more useful because it doesn't change with temperature fluctuations throughout the day.