What is the term for the temperature below which moisture in the air begins to condense?

The term for the temperature below which moisture in the air begins to condense is known as the dew point. This is significant in understanding atmospheric conditions, as the dew point reflects the amount of moisture in the air. When the air temperature cools to the dew point, it can no longer hold all the moisture as vapor, leading to condensation, which may be observed as dew, fog, or clouds.

Understanding the dew point is crucial in building maintenance, particularly when addressing issues related to humidity and condensation in indoor environments. Proper management of indoor air temperature and humidity can help prevent moisture buildup, which is essential for maintaining structural integrity and avoiding issues like mold.

The other terms mentioned do not pertain to this specific concept. The boiling point refers to the temperature at which a liquid turns into vapor, while the freezing point is when a liquid turns into a solid. Humidity point, although suggestive, is not a standard term used in meteorology or building maintenance to describe the condensation of moisture in the air.