---
title: "Dew point — aviation glossary — OnlyPlanes"
description: "The temperature to which air must cool to become saturated with water vapour."
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Meteorology

# Dew point

TERM · Meteorology

At a glance

## Meaning of Dew point

The temperature to which air must cool to become saturated with water vapour.

### More about Dew point

Dew point describes the air's moisture condition. When temperature approaches dew point, condensation can become possible under suitable conditions.

The difference between temperature and dew point can help interpret weather, but it does not alone determine exactly when fog or cloud will form.

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