A high-pressure heat dome settled over the western United States from Arizona to Montana by August 2, 2026, bringing record-breaking temperatures and elevated wildfire danger. The system was expected to be relatively short-lived.
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A ridge of high pressure is holding heat close to the ground — what's known as a heat dome — from Arizona to Montana, though the good news is that it will be relatively short-lived, National Weather Service meteorologists said.
Heat wave brings record-breaking temps, heightened wildfire risk to parts of Western US AP News