Hot Spell Roasts Eastern US Ahead of Holiday Weekend

Millions of Americans are enduring a stifling heatwave, with dangerous temperatures forecast to persist through the Fourth of July holiday weekend. The intense heat, which began in the Midwest, is now intensifying in the Northeast, threatening major cities with readings that could approach or surpass 100 degrees Fahrenheit (38 degrees Celsius).

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This level of rare and long-duration heat, with little or no overnight relief, affects anyone without effective cooling and/or adequate hydration.

Cities including New York, Philadelphia, Boston, and Washington are bracing for the extreme conditions. The combination of high temperatures and humidity is creating a dangerous heat index, which the National Weather Service warns could peak as high as 115°F (46°C) in the mid-Atlantic region. This poses life-threatening risks, particularly for those participating in outdoor Fourth of July activities like barbecues and fireworks displays.

Authorities are urging residents to stay indoors during the hottest parts of the day, check on neighbors, stay hydrated, and seek air-conditioned spaces. New York City has opened hundreds of public buildings as cooling centers, extended pool hours, and deployed volunteers to assist vulnerable populations. The city is also providing misting fans and wet towels at cooling stations.

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I just take him on really short walks, and then go back home and put him in the AC, and like, make sure he has water.

Mayor Zohran Mamdani of New York advised residents to set air conditioners to 78°F (26°C) to help manage the strain on the power grid, which is working overtime. This suggestion, however, has drawn some criticism on social media. Meanwhile, Chicago is also preparing for potential grid overload, with the local power utility urging customers to raise their thermostats to a comfortable level.

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power grid is working overtime to keep us cool.