Overview

• The National Weather Service has issued heat advisories for over 6 million people in central and southern Texas, warning of major to extreme heat risks through midweek.
• Cities like San Antonio, Austin, and Del Rio are expected to break May temperature records, with highs forecast to reach 107–110°F in some areas.
• The intense heat is caused by a persistent high-pressure system, or heat dome, trapping hot air over the region, a phenomenon linked to climate change.
• Health experts caution that the early timing of this heat wave increases the risk of heat-related illnesses, especially for vulnerable populations unaccustomed to such temperatures.
• Slight relief is expected by late week as the heat dome shifts eastward, but near-record warmth will persist through the weekend.