KJZZ is a service of Rio Salado College,
and Maricopa Community Colleges

Copyright © 2026 KJZZ/Rio Salado College/MCCCD
Play Live Radio
Next Up:
0:00
0:00
0:00 0:00
Available On Air Stations

Phoenix is under another extreme heat warning this week

heat hiking sign
Annika Cline/KJZZ
Phoenix Parks and Recreation has signs at some trails to educate hikers about hiking safety.

Another extreme heat warning is in effect in the Phoenix area Wednesday through Friday. Temperatures are expected to climb above 110 degrees.

Arizonans are used to hot summers, but the National Weather Service urges people not to underestimate the dangers of these extreme heat warning days. Heat kills more Americans each year than any other weather event. And warnings are issued when temperatures are high enough above normal that the heat poses a risk to everyone.

National Weather Service

“This time of year, people are going back to school, it kind of starts to feel like the summer is over and we all know it's not,” said Dr. Nick Staab, chief medical officer for Maricopa County Public Health. “We’re just continuing to encourage folks to have a plan and use the resources that are available in the community.”

Cooling centers remain open in dozens of locations across Maricopa County. Phoenix’s 24-hour heat relief site will be open through the end of September. Arizonans in need of heat-related assistance can get help by calling 211.

The NWS has issued extreme heat warnings on 26 days so far this year. Last year, there were 45 warning days, which lasted until early October.

Phoenix forecast from the NWS

Wednesday: Sunny and hot, with a high near 110 and a low around 91. A 10% chance of showers and thunderstorms before 11 p.m. Widespread haze before 4 a.m., then widespread haze after 5 a.m.

Thursday: A 30% chance of showers and thunderstorms, mainly after 5 p.m. Sunny and hot, with a high near 112 and low around 91.

Friday: A 20%-30% chance of showers. Mostly sunny and hot, with a high near 111 and low around 90.

Saturday: A 30% chance of showers and thunderstorms. Mostly sunny and hot, with a high near 110 and low around 89.

Sunday: A 30% chance of showers and thunderstorms. Mostly sunny and hot, with a high near 110 and low around 89.

Latest on Arizona heat

Katherine Davis-Young is a senior field correspondent reporting on a variety of issues, including public health and climate change.