Office of Heat Response and Mitigation, City of Phoenix, AZ, School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ

Climate & Health Team, Division of Epidemiology & Informatics, Maricopa County Department of Public Health, Phoenix, AZ

Knowledge Exchange for Resilience, Arizona State University, Tempe, AZ

Office of Environmental Epidemiology, Bureau of Environmental Health Services, Arizona Department of Health Services, Phoenix, AZ

Arizona Faith Network, Phoenix, AZ

Human Services Division, Maricopa Association of Governments, Phoenix, AZ

School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ

Office of Public Health, City of Phoenix, AZ

Supported by cooperative agreement NUE1EH001450 from the U.S. Centers for Disease Control and Prevention.

The authors report no conflicts of interest.

All data referenced in this letter are available on public websites.

Correspondence: David M. Hondula, School of Geographical Sciences and Urban Planning, Arizona State University, 975 S. Myrtle Avenue, Tempe, AZ 85281. E-mail: [email protected].