Heat index values up to 107 expected. Coastal Broward County, Coastal Miami Dade County, Far South Miami-Dade County, Inland Broward County, Inland Miami-Dade County, Metro Broward County, and Metropolitan Miami Dade Counties. From 11 AM this morning to 6 PM EDT this evening.
| Date | August 21, 2026 |
|---|---|
| Source | National Weather Service — Miami |
| Category | alert |
| Location | Miami-Dade County |