US Swelters: Hottest Month Ever Looms Amid Deadly Heat Domes

July is poised to become the hottest month in U.S. history, with record-breaking temperatures affecting over 260 million people. Cities like New York and Salt Lake City have already experienced their hottest days in years, and even decades. This extreme heat is being amplified by climate change and the current El Nino pattern, which contributes to the formation of dangerous heat domes. These high-pressure systems trap heat, leading to prolonged periods of dangerously high temperatures.

These heat domes have been linked to at least 70 deaths across states including Mississippi and Illinois this summer. New Jersey reported 29 fatalities during an oppressive heat dome event on the Fourth of July weekend, which also disrupted transportation. As the U.S. faces another heat dome expected to impact the West with temperatures near 120 degrees, scientists emphasize that heat waves are intensifying and becoming more widespread due to human-caused climate change. Heat is already the deadliest weather hazard in the U.S., and its risks are compounded by worsened drought conditions and increased wildfire threats, creating a dangerous synergy with severe air quality issues.