Heat wave grips US

A powerful heat wave is bringing dangerous temperatures to much of the eastern United States ahead of the July Fourth holiday, prompting health warnings and concerns for millions of people. Meteorologists say a persistent heat dome is driving temperatures and humidity to extreme levels, with some cities expected to see heat index values above 110 degrees Fahrenheit. While businesses that sell cooling products are benefiting, officials are urging residents to stay hydrated and limit outdoor activity. At the same time, extreme heat, dry conditions, and strong winds are fueling dangerous wildfires across the western U.S.

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