Overview

• A persistent heat dome driven by strong high pressure is pushing daytime highs above 100°F from the Great Plains through the Midwest, with the East Coast facing its hottest readings early next week.
• Forecasters warn minimal overnight cooling will keep low temperatures near 80°F in many urban areas, limiting relief and increasing heat stress.
• City officials in Chicago, New York City and other municipalities have opened cooling centers and urged the elderly, children and outdoor workers to seek shade and hydrate.
• The UK Health Security Agency has issued an amber heat-health alert for all of England as temperatures approach 32°C, and experts warn of nearly 600 excess deaths in England and Wales.
• Climate change is amplifying the frequency and severity of heat dome events, heightening risks for vulnerable groups and underscoring the need for long-term adaptation.