The City of Phoenix website will undergo routine system maintenance on Saturday, January 31, 2026. While no major disruptions are expected, some services may be temporarily unavailable between 7:00 AM and 7:00 PM. If you experience any issues, please check back shortly. Thank you for your patience.
Office of Heat Response and Mitigation
Phoenix’s Office of Heat Response and Mitigation leads the efforts of the hottest large city in the United States to fight the growing hazard of urban heat.