The National Weather Service (NWS) has issued extreme heat warnings and advisories across the central and eastern US as a dangerous heatwave sweeps through the region. Record-breaking temperatures have been observed in various locations, with cities like Salt Lake City and Mitchell, South Dakota hitting triple-digit readings. Major cities under active heat alerts include Chicago, New York City, and Washington DC, with the NWS categorizing some warnings as “extreme heat” alerts due to the severity of the conditions.

During the peak of the heatwave, cities like Boston, New York City, and Philadelphia could reach or surpass 100F, with humidity levels driving heat index values into the triple digits in many areas. Night-time lows offering little relief, combined with high humidity, increase the risk of heat-related illnesses, especially among vulnerable populations.

Officials in cities like New York and Philadelphia are urging residents to take precautions, emphasizing the seriousness of the heat threat. The New York City emergency management agency warned residents about the dangers of heat and advised proactive measures to stay safe. Philadelphia’s department of public health declared a heat health emergency to address the escalating risks posed by the heatwave.

As the heatwave persists, the public is advised to stay hydrated, limit outdoor activities, and check on vulnerable individuals, such as the elderly, to ensure their safety during this period of extreme heat.