Miami Ties All-Time High Temperature Record at 100°F
Miami Ties All-Time High Temperature Record at 100°F
US · Published Aug 20, 2026
Miami experienced a historic heatwave this week, with temperatures reaching 100°F (37.8°C) on Tuesday, August 18,
This ties the city's all-time high temperature record, previously set on July 21, 1942, according to the National Weather Service. The extreme heat was exacerbated by westward winds that prevented the usual cooling ocean breeze along the coastline. The heat index, or 'feels-like' temperature, soared well above 100°F, prompting health officials to issue warnings. The Miami heat advisory ended at 7 p.m. Tuesday, with slightly cooler temperatures forecast for the following day.

Impact & Risks

The extreme heat posed significant health risks to Miami residents and visitors, particularly during peak afternoon hours. Health officials advised against outdoor activities due to the risk of heat-related illnesses such as heat exhaustion and heatstroke. Vulnerable populations, including the elderly, children, and those with pre-existing health conditions, were at heightened risk. Additionally, more than 72 million people across the region were under heat alerts, highlighting the widespread nature of this weather event.

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