Miami-Dade County, FL. treats extreme heat as both a public health priority and a core resilience investment. Under Mayor Daniella Levine Cava’s leadership, the county has installed air conditioning in 1,700 public housing units, expanded urban tree canopy in parks, added shade shelters at transit stops, and implemented cool roofs across many public buildings. To ensure residents have access to timely, actionable information, the county maintains a trilingual heat information website and partners with trusted community organizations like the CLEO Institute to communicate risks effectively. It has also established a network of air-conditioned public buildings as cooling sites and integrated heat safety messaging into emergency management outreach. Recognizing the added danger of high humidity, Miami-Dade lowered the threshold for extreme heat warnings in coordination with the National Weather Service, enabling earlier alerts and better protection for residents.