Over 100 Million Americans Endure Heat Dome Amid Rising Temperatures
A significant heat dome is currently affecting over 100 million Americans, with extreme temperatures posing serious health and economic risks. According to the CDC, heat is the deadliest weather hazard in the U.S., with heat-related deaths increasing by 117% since 1999, reaching 2,394 fatalities in 2024. The economic impact of extreme heat events was estimated at $162 billion in 2024, accounting for about 1% of the U.S. GDP. Cities are now experiencing five times more heat events than in the 1960s, with heat seasons lasting 46 days longer. The National Weather Service (NWS) emphasizes that heat stress disproportionately affects older adults, outdoor workers, and individuals with pre-existing health conditions. The ongoing heat dome has made record-breaking temperatures, such as Denver's 85°F (29.4°C) in March 2026, up to 800 times more likely due to climate change.