What term describes the temperature at which a parcel of air becomes 100% saturated?

The term that describes the temperature at which a parcel of air becomes 100% saturated is known as the dew point. At this temperature, the air can no longer hold all the moisture vapor present, leading to the formation of water droplets or condensation. Understanding dew point is essential in meteorology as it provides insight into humidity levels and potential weather conditions.

By contrast, the other terms have different meanings. Humidity refers to the amount of moisture in the air but does not specifically indicate saturation. Evaporation point isn't a standard term used in the context of air saturation; instead, it generally relates to the temperature at which a liquid turns into vapor, which is not directly related to the concept of air saturation. Condensation point can similarly refer to the temperature at which vapor condenses, but dew point is the more precise term for the saturation level of air humidity.