There are various ways to measure the amount of water vapor in the atmosphere. The amount of moisture a given parcel of air can hold is dependent on the ambient temperature. Higher temperatures mean ...

This weeks Climate Chronicles question comes from Bill.

IOWA, USA — When encountering sweltering summer conditions, many Iowans will quickly defer to the infamous quote, "It's not the heat, it's the humidity." But what contributes to Iowa being so much ...

A heat wave that has already killed several people across Texas and Mexico is headed further north, bringing temperatures exceeding 110 degrees. With the heat index, which is how hot it feels to the ...

LOUISVILLE, Ky. — It’s that time of the year again when heat and humidity cause sweltering temperatures across Kentucky and southern Indiana. You’ve likely heard about the heat index mentioned once or ...

Wet-bulb heat combines temperature and humidity, creating deadly conditions in which the body cannot cool itself during India ...

A range of climate phenomena, from Western Disturbances to El Niño, affect how cold or hot the weather is. Here is a guide to their meaning, and how they impact your surroundings.

Over the next two weeks, extreme levels of humidity are forecast to hit around 40 states, with the first wave of very muggy weather building in central and eastern states through Thursday. Across the ...