Phoenix, Arizona – Triple-digit temperatures will dominate Arizona this week, with Phoenix expected to hit 106°F by Thursday and climb to 112°F by Sunday. A summer weather alert is in effect for Maricopa County, where prolonged heat may pose health and infrastructure risks.
According to the National Weather Service in Phoenix, clear skies and calm winds will allow temperatures to soar beginning Thursday afternoon. Highs will steadily increase from 103°F on Wednesday to 114°F by Monday. Heat-related illness becomes more likely each day without adequate hydration or air conditioning.
Local officials urge residents to limit time outdoors, especially along major highways like I-10 and Loop 202, where pavement and vehicle temperatures rise rapidly. Those working outside or traveling during the hottest hours — between 2 p.m. and 6 p.m. — should take frequent breaks and stay shaded when possible.
There are no official excessive heat warnings yet, but the long stretch of extreme temperatures warrants caution. This will be the hottest stretch of summer so far, matching late-June averages from record-setting years like 2021.
Stay alert: outdoor events should consider adjusting times or locations, and Valley Metro riders should check for cooling stations. More heat advisories could be issued by Friday.
🔥 5-Day Phoenix Forecast: June 25–June 30
- Wednesday (Today): Sunny, high near 103°F. Light wind.
- Thursday: Sunny, high near 106°F. Calm wind turning west at 5 mph.
- Friday: Sunny and hotter, high of 107°F.
- Saturday: Clear and hot, high reaching 108°F.
- Sunday: Blistering heat continues, high of 112°F under sunny skies.
- Monday (Preview): Peak heat arrives with highs near 114°F. Stay indoors midday.
