dew point
The temperature at which air becomes saturated with water vapor and dew forms. Used in weather forecasts and scientific contexts.
The dew point tonight is forecast to be 15 degrees.
露点が高いと蒸し暑く感じる。
When the dew point is high, it feels muggy.
dew point hygrometer
dew point hygrometer
Compound of 露 (dew) and 点 (point), directly translating the English term 'dew point'.