More than a dozen restaurants, cafes and bars will close Friday as part of the nationwide protest actions by the Department of Homeland Security and Immigration and Customs Enforcement. Community ...

Ozone alerts prompt reduced driving across Colorado, Texas and Arizona as pollution rises and threatens respiratory health.

Phoenix is already flirting with record heat, and people are asking what it means for summer.

California, Nevada, and other western states are boiling over this week.

An extreme heat warning is in place for the Valley through May 12 with highs well above normal. But will we hit 110 degrees?

The Salvation Army is opening 10 heat relief stations in the Valley during the extreme heat warning. PHOENIX — The National ...

As temperatures climb, Arizona State Parks and Trails is reminding hikers to stay hydrated, hike early in the morning, wear ...

Certain Phoenix hiking trails will close starting Mother's Day for a few days with temperatures over 100 degrees. Here's where.

A heatwave will roast California and Arizona, with temperatures soaring as high as 114 degrees, levels more typical of peak ...

Smog levels are spiking across parts of California and Arizona this weekend, with officials warning of unhealthy ozone ...