Extreme Heat Affects Over 132 Million Across US

More than 130 million people across the central and eastern United States are currently experiencing a severe heat wave characterized by record-breaking temperatures and high humidity, with some areas feeling as hot as 115 degrees. This extreme heat event, which spans at least 29 states from Nebraska to Massachusetts and North Dakota down to Florida, is placing a significant strain on power grids as residents increase air conditioner use to seek relief. Health officials warn that extreme heat is the deadliest weather-related hazard in the U.S., causing roughly 2,000 deaths annually, with this year already seeing at least 150 heat-related fatalities. The heat wave is expected to persist through midweek, with little relief even at night as overnight lows remain in the 70s, maintaining the dangerous conditions. Major cities including St. Louis, Memphis, Charlotte, Savannah, Tampa, and Jackson are notably affected, facing prolonged periods of upper 90s to low 100s temperatures combined with high humidity. Authorities have issued a mix of heat advisories and excessive heat warnings to mitigate the public health risks associated with this ongoing extreme heat event.