Thousands of Americans have been urged not to drive on Wednesday amid concerns over high air pollution levels. Ozone Action ...

Wildfires can damage local vegetation and change soil characteristics, making the area more vulnerable to flash floods.

The Phoenix monsoon season officially started on June 15 but the first push of the monsoon kicked off on Wednesday. What's ...

A ground stop was underway at Sky Harbor, but it is now just a ground delay with the average delay lasting almost an hour.

Scientists were initially given less than a week to prepare for the loss of microwave observations that are key in detecting ...

Drivers in the East Valley were met with dusty conditions as monsoon activity popped up on Wednesday evening. Monday marked ...

Legally mandated national climate assessments disappeared this week from the federal websites built to display them, making ...

Legally mandated U.S. national climate assessments seem to have disappeared from the federal websites built to display them ...

More than 210 degrees Fahrenheit separates the highest and the lowest temperatures on record in the United States, the ...

APHIS experts evaluated Mexican response to New World screwworm and will phase in some livestock trade, USDA announces.