Phoenix, Ariz. – Triple-digit heat will dominate central Arizona again Wednesday as residents brace for another day of dangerous September temperatures. Drivers along I-10 and I-17 should take precautions, with afternoon road heat intensifying tire blowout risks and increasing chances of vehicle breakdowns.
According to the National Weather Service in Phoenix, highs will peak near 105°F Wednesday afternoon with sunny skies. Light southwest winds may offer little relief, and heat indices will push conditions closer to 107°F. Emergency officials urge residents to limit outdoor activity, carry extra water, and avoid leaving children or pets inside parked cars.
The heat pattern extends through Friday with highs near 99°F, though overnight lows will dip into the low 70s. Thursday may bring gusty winds up to 20 mph across Maricopa County, adding fire-weather concerns for dry desert landscapes. Valley cities like Glendale, Scottsdale, and Mesa will share the same extreme heat challenges midweek, before a slight cool down approaches Friday evening.
For workers and commuters, midday exposure on roadways will remain hazardous. The Arizona Department of Transportation advises checking tire pressure before long drives and keeping emergency kits stocked with water and chargers. Outdoor workers are encouraged to rotate shifts and monitor signs of heat exhaustion.
Relief arrives this weekend as Saturday and Sunday highs ease into the upper 90s, with overnight lows holding in the 70s. Still, forecasters caution the extended dry stretch could worsen wildfire risks across central Arizona through early next week.
Warnings remain in effect for Phoenix and surrounding cities through Thursday evening. More advisories could follow if wind-driven fire conditions intensify.
Five-Day Forecast for Phoenix, Arizona
- Wednesday: Sunny, high near 105°F, low 78°F.
- Thursday: Sunny, high 100°F, breezy, low 75°F.
- Friday: Sunny, high 99°F, low 73°F.
- Saturday: Sunny, high 98°F, low 74°F.
- Sunday: Sunny, high 99°F, low 74°F.
