Understanding your calculation
Method, example and limitations
How the calculation works
Dew point estimates the temperature at which air would become saturated, using air temperature and relative humidity. The calculation uses a vapor-pressure approximation.
Example to check
At 100% relative humidity, dew point equals air temperature. This provides a simple check on units and formula behavior.
Before using the result
Sensor error and formula choice affect the estimate. It does not forecast precipitation, and extreme conditions can fall outside an approximation’s reliable range.