If you operate a bar or music venue, you already realize the fire marshal can close down your business for a variety of reasons.
Category:Meteorologists. A meteorologist is a scientist who studies weather; and may, like a weather presenter (who often are not scientists) engage in weather forecasting, or may solely conduct research. Category:Climatologists is a closely related category of researchers in climatology, the study of climate.
Unless you are a weather forecaster, or a scientist or engineer involved in work involving the amount of water vapor in the air, you can easily go through life without understanding relative humidity. On the other hand, it is nice to know what a TV meteorologist means by dew point.