Extreme Heat
Heat is the number one weather-related killer. It's estimated that the average number of excess deaths (number of deaths above average) during times of extreme heat are 600 annually in Miami-Dade County alone. Heat related deaths begin to rise at a heat index of 86°F and rise steadily with each additional degree. In 2024, we experienced an unprecedented 60 days with a heat index at or over 105°F. The annual economic impact of heat on labor productivity in South Florida alone is $10 billion.
To protect the health and lives of our residents, Miami-Dade County activates a Heat Season protocol during the period of chronic high heat and humidity from May 1- Oct. 31. The benefits to public health and our economy have been tangible: in recent years, Miami-Dade had the lowest rates of heat-related ER visits of any county in FL.
Learn how Miami-Dade County has prepared for the 2025 Heat Season.

Environmental Resources Management
Loren Parra
Overtown Transit Village North
701 NW 1st Court,
Miami, FL 33136
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