🌡️ Dew Point Calculator

Dew point is the temperature at which air becomes saturated with water vapor and dew begins to form. It's the highest temperature at which water vapor can condense into liquid water.

Relative humidity is a percentage that compares current moisture to maximum possible moisture at a given temperature. Dew point is an absolute temperature value that doesn't change with air temperature, making it a more reliable indicator of actual moisture content.

Generally, dew points below 60°F (16°C) feel comfortable, 60-70°F (16-21°C) feels slightly humid, and above 70°F (21°C) feels uncomfortably humid and sticky.

Dew point helps predict fog formation, frost conditions, and human comfort levels. It's crucial for HVAC systems, agriculture, aviation, and weather forecasting.

This calculator uses the Magnus-Tetens formula with an accuracy of ±0.35°C for temperatures between -40°C and 50°C under standard atmospheric pressure.

The highest dew point ever recorded was 95°F (35°C) in Dhahran, Saudi Arabia, on July 8, 2003, when air temperature was 108°F (42°C) with 68.5% relative humidity.

No, dew point cannot exceed air temperature. When dew point equals air temperature, relative humidity is 100% and condensation occurs.