Record temperatures bake the West as heat sickens hundreds at air show

ABC News
March 22, 2026
3 min read

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The Bottom Line

Record-breaking early heat dome across Western U.S. sends 400 people to hospitals for heat-related illness.

How This Affects You

If you live in Arizona or the Western U.S., expect dangerous triple-digit temperatures Sunday; risk of heat exhaustion increases significantly.

AI Summary

Four hundred people were treated for heat-related illness at an Arizona airshow Sunday as a rare early-season heat dome pushed temperatures into triple digits across the West. The weather system is generating record-breaking heat that forecasters expect to persist through the weekend, with some areas experiencing dangerous conditions not typically seen until summer. The scale of illnesses at a single outdoor event underscores the severity of the heat wave and the immediate health risks posed by extreme temperatures. Heat-related emergencies typically spike during prolonged high-temperature events, overwhelming medical resources and threatening vulnerable populations including the elderly and outdoor workers. The unusual timing of such intense heat in early season has raised concerns about the potential duration and intensity of the summer ahead.

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