What is the term for the point at which air becomes saturated with moisture?

The term for the point at which air becomes saturated with moisture is known as the dew point. This is the temperature at which air reaches a relative humidity of 100%, meaning it can no longer hold additional moisture in the form of water vapor, causing condensation to occur. When air cools down to this temperature, water vapor in the air begins to condense into liquid water, which is often seen as dew, fog, or clouds.

Understanding the dew point is crucial in meteorology and atmospheric studies because it indicates the amount of moisture in the air. A higher dew point suggests more moisture, while a lower dew point indicates drier air. The other choices refer to concepts related to moisture but do not specifically denote the temperature at which air becomes saturated. For example, the condensation point is not a commonly used term in meteorology and often overlaps with the dew point concept but does not specifically define saturation. Precipitation level and humidity threshold relate more to the conditions for rainfall and general humidity levels rather than the precise measurement of saturation.