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.

Here is everything to know about the northern lights this week, including whether they will be visible in Arizona. The ...

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 ...

NWS Las Vegas issues a moderate HeatRisk alert and forecasts above-normal temperatures with limited shower chances.

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.

TUCSON, Ariz. (13 News) - A dust storm rolled through southern Arizona on Monday, June 30. The National Weather Service in Tucson issued a dust storm warning around 7 p.m., but it expired at 8:15 p.m.