US braces for Fourth of July amid intense heat wave; millions affected by dangerous temperatures and wildfire risks

The United States is bracing for a dangerous heat wave that is spreading from the Midwest to the East Coast, impacting holiday celebrations for the Fourth of July weekend. Nearly 160 million Americans are under heat advisories, with authorities scrambling to ensure public safety amidst soaring temperatures.

Local officials are implementing measures such as opening cooling centers and deploying mobile units to provide relief. New York City Mayor Zohran Mamdani described the conditions as "extremely dangerous." The city anticipates temperatures exceeding 37.78 degrees Celsius (100 degrees Fahrenheit), with heat index values expected to be even higher. This extreme heat poses a significant public health threat, as heat contributes to an average of 500 premature deaths in New York City each summer.

In Philadelphia, an event honoring Pope Leo XIV was moved indoors due to the heat, and a World Cup fan festival was scaled back. Washington, D.C., has issued an extreme heat warning, expecting record-breaking temperatures for Saturday, potentially surpassing the previous high of 38.33 degrees Celsius (100 degrees Fahrenheit) set in 1919. Similar precautions are being taken in Boston and Raleigh, with expanded public health resources and cooling centers.

The intense heat wave also exacerbates the risk of wildfires in the western United States. Dry conditions and strong winds have fueled existing fires in Utah and southern Colorado, with millions of people under fire warnings. Dozens of large fires continue to burn across the country, consuming vast tracts of land.

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These are extremely dangerous conditions.