Dangerously hot conditions are currently gripping the Phoenix metropolitan area, with temperatures forecast to reach 113 to 114°F through Thursday evening. The National Weather Service has issued an Extreme Heat Warning for Maricopa County through 8 p.m. MST Thursday — its highest-level heat alert — and the Arizona Department of Health Services has activated public guidance urging residents to stay indoors, use cooling centers, hydrate continuously, and check on vulnerable neighbors.
This is not a routine summer heat advisory. At 114°F, heat exhaustion can develop within 30 minutes for unprotected individuals outdoors. Heat stroke — a life-threatening medical emergency — can follow rapidly.