Millions of Americans have been advised to stay indoors across four states on Thursday amid soaring summer temperatures. The ...

Every year since 1991, the National Ocean and Atmospheric Administration has offered competitive grants to a small number of ...

USDA's plan was to slowly reopen the southern border, but a new case of New World screwworm in Mexico has put reopening plans ...

The good news is that the mini heat wave that hit on Wednesday is peaking on Thursday, July 10, and the weekend will be ...

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

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

For Monday, a high of 112°F is expected for the Valley, rising to 115°F by Wednesday. An Extreme Heat Watch will take effect on Tuesday, July 8, and it is expected to last into Thursday, July 10.

Here is everything to know about the northern lights this week, including whether they will be visible in Arizona. The northern lights will actually be visible in 15 states tonight: Alaska. Washington ...

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

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

As Texans reel from the deadly flooding that hit the Guadalupe River, experts are raising concerns over how mass layoffs at federal weather agencies have put communities at risk.

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