An extreme heat wave is sweeping across the Midwest and East Coast, with temperatures and heat indices reaching dangerous levels ahead of the July 4th holiday weekend. The National Weather Service (NWS) has issued Extreme Heat Warnings for large swaths of the country, affecting over 102 million people under warnings and another 43 million under watches. Forecasters predict heat indices of 100 to 115 degrees in some areas, with record-breaking temperatures expected in multiple cities.
Residents and officials are taking measures to stay safe. In Chicago, cooling centers and splash pads have been opened, while New York City is deploying vans with medical staff to distribute water, electrolytes, and sunscreen. The city is also opening cooling centers across the five boroughs. Nashville has begun heat patrols to provide water to the homeless population. Detroit and other cities in the Midwest have extended hours at recreation centers to offer relief from the heat.
The heat wave is caused by a heat dome, a high-pressure system that traps hot air and prevents cooling. Meteorologists warn that the conditions are extremely dangerous, particularly for vulnerable populations such as the elderly, those with respiratory issues, and pets. Officials recommend staying indoors, staying hydrated, and avoiding prolonged outdoor activity.
The heat is expected to peak on Thursday and Friday, with temperatures reaching 100 to 105 degrees in some areas. While temperatures may slightly decrease by the Fourth of July, the heat dome is expected to persist through the weekend, affecting millions of Americans.