Dew point

The dew point is the temperature to which air must cool to become saturated. A small spread between temperature and dew point signals a risk of fog, mist or low cloud.

German term

Taupunkt

In a METAR, temperature and dew point appear as a pair such as 12/06. As the evening cools, a spread of a few degrees can close quickly, and visibility can drop sharply near sunset or at dawn.

For general information only. Always use official sources, your aircraft's flight manual and current national rules for flight decisions.