Heat Reports

Heat Surveillance reports are generated weekly during the heat season and an annual heat surveillance mortality and morbidity report are available summarizing the data. The weekly reporting time periods are from Sunday to Saturday, week ending (W/E) is always a Saturday. 

Click on a link below to the corresponding weekly or annual report to see more information. For additional heat safety information please visit our Heat Safety page.

Seasonal Weekly Reports (Heat Season: May - October)

2023 Weekly Heat Mortality/Morbidity Reports

Reporting time period is from Sunday to Saturday, week ending (W/E) is always a Saturday. Reports are posted through Week 44. Reports are posted weekly during the heat season on Wednesday afternoons.

• View the Most Recent Weekly Heat Mortality / Morbidity Report (PDF)
• View All Weekly Heat Reports

Yearly Mortality Reports

Browse through our current and past mortality reports.

• 2022 Annual Final Report (PDF)
• 2021 Annual Final Report (PDF)
• 2020 Annual Final Report (PDF)
• 2019 Annual Final Report (PDF)
• View All the Mortality Reports

Multi-Year Morbidity Report

• View the Most Recent Morbidity Report (PDF)

Special Studies

• Heat-Associated Mortality in a Hot Climate: Maricopa County, Arizona, 2006-2016 (PDF)
• Assessing the Cooling Needs Of Homebound Individuals In Maricopa County, 2016 (PDF)
• "It’s not the heat, it’s the vulnerability: attribution of the 2016 spike in heat-associated deaths in Maricopa County, Arizona" by Putnam et al (PDF - September 2018)
• Cooling Center Evaluation (PDF - January 2017)
• Heat-Related Illness Syndrome Query (PDF - September 2016)
• Cooling Center Evaluation Summary Report (PDF - Infographic)
• Community Assessment for Public Health Emergency Response (CASPER) "Heat Vulnerability and Emergency Preparedness Needs Assessment" Report (PDF - March 2015)
• "Maricopa County Cooling Center Evaluation Project" Facility Manager Survey Results (PDF - September 2015)
• "Maricopa County Cooling Center Evaluation Project" Observational Survey Results (PDF - September 2015)
• "Maricopa County Cooling Center Evaluation Project" Visitor Survey Results (PDF - September 2015)