TUCSON, Ariz. — It's that time of year... the time to track dew point and humidity! As the monsoon grips Southern Arizona, residents are feeling the effects, like sticky shirts and increased sweat, of ...

There is probably no weather element so poorly understood as humidity. Actually, we understand humidity when we feel sticky. But most people do not understand how humidity is quantified. Humidity is ...

Across much of the world, hotter days are no longer arriving alone. The air itself is changing, sometimes turning from dry oven to steam bath, other times drying out even as thermometers climb. As ...