Phoenix Faces Extreme Heat Warning with Temperatures Nearing 107°F
An Extreme Heat Warning is in effect for the Phoenix metropolitan area and surrounding communities in Maricopa County, Arizona. The National Weather Service (NWS) has issued this warning due to 'dangerously hot' conditions, with temperatures expected to peak at 107°F (42°C) on Tuesday, May 12, 2026. This heat wave is unseasonable for May, with current temperatures running approximately 10°F (5.5°C) above the historical average of 95°F–98°F (35°C–37°C). The warning is set to expire Tuesday evening, with gradual cooling expected midweek. However, temperatures will remain above average for the rest of the week. Early-season heat waves like this are particularly hazardous as residents may not yet be acclimated to extreme heat, and nighttime lows in the 70s°F (21°C–24°C) limit the body’s ability to recover. The NWS emphasizes the heightened risk of heat-related illnesses, including heat exhaustion and heat stroke, especially for outdoor workers, older adults, and those without access to cooling. 
