A dangerous heat wave is settling over central and southern parts of the United States for a second consecutive day, with millions of people under excessive heat warnings and advisories. The National Weather Service has issued alerts from Texas to Illinois, warning of heat indices exceeding 110 degrees Fahrenheit in some areas. This prolonged event poses immediate health risks, especially for the elderly, children, and outdoor workers. The extreme temperatures are also straining the electric grid as air conditioning demand surges, raising concerns about potential blackouts. The heat wave is expected to persist through the week, with little relief overnight, compounding the danger.
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Sweltering heat wave grips central and southern U.S.
Published July 27, 2026 at 12:03 PM UTC