It's hot outside and sticky, but while the monsoon has arrived in Phoenix, there's not enough moisture for rain.

Warming ocean temperatures and warmer air mean there’s more water vapor in the atmosphere to fuel exteme downpours like those ...

It’s an enormously consequential Trump administration decision affecting airborne toxins, bacterial blooms, mental health and ...

In the late 2010s, when Assistant Professor Flavio Lehner worked for the National Center for Atmospheric Research in Boulder, ...

The National Weather Service office in Boise recorded a high temperature of 104°F, tying the daily record that was set back ...

Experts say climate change is making extreme weather events more frequent and severe, but that our attitudes and actions haven't kept up ...

Tuesday produced 95-degree heat, and triple digit heat index, and then came up with dark clouds, powerful wind gusts and ...