Sunny, bone-dry air settled over Phoenix on Thursday, May 7, and the climb is already on. Afternoon highs are headed for the mid 90s, with a sharp warmup set to shove the city into triple digits starting Friday and ramping up into early next week. Overnight lows will stay on the warm side, so anyone hoping for a big nighttime cooldown is likely out of luck.
Today Through The Weekend
According to the National Weather Service, Phoenix should top out near 95°F on Thursday, rise to about 100°F on Friday, May 8, and reach around 103°F on Saturday, May 9. Nights will only dip into the upper 60s to low 70s, so homes and streets will not get much of a reset before the heat returns each day. Skies stay mostly sunny, with light southeast to south breezes in the afternoons.
Early-Week Peak
Forecast guidance shows the ridge strengthening Sunday into Monday, pushing highs to around 105°F on Sunday, May 10, and 106 to 108°F by Monday, May 11, which is enough to nudge some lower-desert neighborhoods into a Major heat-risk category. Afternoon humidity is expected to drop into the single digits to low teens, and late-day gusts could reach roughly 20 mph. That combination raises the stakes for anyone working or exercising outside and adds to already elevated fire-weather concerns. Officials are keeping an eye on trends and could post heat alerts if temperatures climb above current expectations.
Local Resources And Safety
The Maricopa County Heat Relief Network is up and running for the season and offers an interactive map of cooling centers, hydration stations and respite sites. Residents can call 2-1-1 for help finding a nearby spot. For full details and the site map, see Maricopa County. Earlier coverage highlighted the city’s 2026 Heat Response Plan and downtown 24/7 respite options.
How To Prepare
Limit strenuous outdoor work during the hottest part of the day, keep water handy and drink regularly, and check in on older neighbors or anyone without reliable cooling. If your air conditioning fails or you do not have access to a cool indoor space, use the Heat Relief Network map or call 2-1-1 to locate the nearest cooling option. We will update this page if the National Weather Service issues heat watches or warnings for Phoenix.
