More than 30 million people are under extreme weather alerts Sunday as a sweltering heat wave lingers across the West. Excessive heat warnings and watches were effective in parts of California, Oregon, Washington and the desert Southwest, with temperatures soaring well into triple-digit territory around Phoenix and approaching record highs near Seattle, forecasters said.

National Weather Service offices in Phoenix and Tucson predicted temperatures on Sunday could respectively reach 111 and 108 degrees Fahrenheit, creating "dangerously hot" conditions that carry major risks of heat-related illnesses, especially for anyone in those regions without access to air conditioning or other cooling mechanisms. The temperatures in and around both areas were expected to ease by Tuesday.

Pockets of t

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