What is the dew point?

The dew point is defined as the temperature at which air becomes saturated and water vapor begins to condense into liquid water, such as dew. When air cools to its dew point temperature, it cannot hold all the moisture it contains, leading to condensation. This point is crucial in meteorology as it helps to gauge humidity levels in the atmosphere. A higher dew point indicates more moisture in the air, while a lower dew point suggests drier conditions.

Therefore, understanding the dew point is essential in various applications, including weather forecasting, aviation, and even comfort levels in living environments. It's significant to distinguish this from the other options, which describe different meteorological phenomena or conditions not directly related to the concept of dew point.