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Heat dome creates dangerous conditions across central U.S.

Published July 26, 2026 at 12:03 PM UTC

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A stubborn heat dome has settled over the central United States, bringing dangerously high temperatures to millions of people from Texas to the Dakotas. The National Weather Service warns that heat indices could exceed 110 degrees Fahrenheit in some areas through the weekend, posing serious health risks, especially for the elderly, children, and those without air conditioning. This prolonged event is caused by a high-pressure system that traps hot air beneath it, preventing normal cooling at night. Cities like Oklahoma City and Kansas City have opened cooling centers, and officials urge residents to limit outdoor activities and stay hydrated. The heat dome is expected to persist for several more days before a cold front gradually weakens it. Power grids are under stress as demand for air conditioning surges, but so far operators have avoided rolling blackouts. The broader context: heat domes are becoming more frequent and intense due to climate change, though a single weather event cannot be directly attributed to global warming. For now, the priority is public safety, with communities bracing for the peak of the heat wave later this week.