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Dew Point Calculator

The Magnus approximation combines temperature and relative humidity to estimate the temperature where air becomes saturated.

This calculator is free to use. Enable JavaScript to enter your values and see a result instantly.

How it works

The Magnus approximation combines temperature and relative humidity to estimate the temperature where air becomes saturated.

Worked example

At 25°C and 60% humidity, dew point is about 16.7°C.

Keep in mind

Accuracy varies at temperature extremes.

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