An e-mail from Matthew wants to know which is the better measure of humidity, relative humidity or dew point. Dew point is by far the better measurement of how how much water is contained in the air.

I comment from time to time on how the dew point temperature can be a good guide as to what the coming overnight low temperature might be. A reader wonders if there is such a relationship for relative ...

Humidity, a measure of the amount of water vapour in the air, plays a crucial role in shaping our weather, influencing rainfall, and affecting how we feel day to day. While often overshadowed by ...

MOLINE, Ill. — Many of us have switched on the furnace for the first time this fall season and that's a trend that will likely continue heading into the remaining weeks of October. With each passing ...