Meteorology

Dewpoint

Definition

The temperature at which air becomes saturated and moisture begins to condense. When the temperature-dewpoint spread narrows to within 2-3 degrees, fog or low clouds are likely to form.

Related Terms

Relative Humidity

The ratio of actual water vapor in the air to the maximum amount it could hold a...

Fog

A cloud at ground level that reduces visibility below 1 kilometer. Types include...

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