A spike in temperatures highlights the felt reality and scientific certainty of climate change. So why is this still such a ...

Record-breaking temperatures are forecast for Arizona this week, with Phoenix expected to hit the 100s as part of an ...

An extreme heat watch is in effect from Thursday through Sunday next week for the Valley and much of southern Arizona, as temperatures surge to 20–25 degrees above average.

Welcome back to air conditioning season, Arizona. Experts are here to settle your yearly fights. This is where you should set ...

The National Weather Service has forecasted temperatures between 103 and 109 for March 19-22.

High pressure developing along the West Coast will push afternoon temperatures well above normal over the next several days. Highs will run roughly 10 to 15 degrees above average early in the week.

High pressure is expected to bring significantly hotter conditions during the second half of the week. High temperatures ...

Phoenix is bracing for record-breaking heat this week as temperatures are forecast to hit 100°F, an unseasonably early arrival for triple-digit weather in March.

It's not often Phoenix reaches 100 in March (it's only happened once since 1896).

By the afternoon, temperatures will vary widely across Southern Arizona. Areas east of Pima County will stay cooler with highs mainly in the 70s, while locations west of Tucson could reach the 90s.

Triple-digit temperatures will impact Major League Baseball spring training games in Arizona for several days this week.

Flagstaff residents can stash the snow shovels for now, and Phoenix folks might get a break from their sweaters. A strong ridge of high pressure is planting itself over the western United States, ...