Sweltering heat wave grips central and southern US for a second straight day
Summary
A strong heat wave is affecting central and southern parts of the United States for the second day in a row, with temperatures and humidity at dangerous levels. The hot weather is caused by a heat dome, which traps heat in the area, and is expected to stay for most of the week.Key Facts
- Tens of millions of people are under extreme heat warnings in central and southern U.S. regions.
- Heat indexes (how hot it feels when humidity is included) are over 105°F (40.5°C) from Memphis to Montana to Las Vegas.
- Some areas in the Southwest could see temperatures near 120°F (49°C).
- A heat dome is causing the high temperatures by trapping heat in the atmosphere.
- The heat wave is expected to remain mostly in place throughout the week.
- Children, older adults, and people with medical issues are at higher risk of serious heat-related illness.
- Experts suggest using air conditioning, drinking plenty of water, and avoiding direct sunlight.
- The first half of 2026 was the second-hottest on record in the continental United States.
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