A dangerous heat wave is sweeping across the eastern United States, set to persist for several days.
Extreme heat warnings have been issued for several states, including Illinois, Minnesota, Massachusetts, Nebraska, Pennsylvania, Missouri, Wisconsin, Michigan, New York, New Jersey, Vermont, Iowa, West Virginia, and South Dakota.
Over 170 million individuals are projected to experience this intense heat starting Sunday and continuing through the week.
For specifics on active alerts in your area, you can check a relevant weather resource.
Here are some key points to note:
The first heat wave of the season
This marks the initial heat wave of summer 2025, bringing with it significant heat and humidity. Experts say this week could be the hottest on record.
The National Weather Service has cautioned people to remain vigilant.
They noted, “This will be an especially dangerous time, as our bodies are still adjusting to these extreme temperatures.”
Heat-related health issues
Extreme heat is responsible for an average of 800 deaths annually, and in 2024, there were 238 heat-related fatalities due to various weather events like tornadoes, hurricanes, and floods.
Jonathan Porter, chief meteorologist at Accuweather, explained that most heat-related illnesses commonly occur on the last day of a heat wave or shortly after it ends, as the impact of heat builds over time.
The NWS advises staying hydrated, ensuring your air conditioner is working properly, limiting outdoor activities, and checking in on friends and family.
Individuals who are elderly or very young are particularly vulnerable to high temperatures and drastic changes in heat. If signs of heat fatigue or dehydration appear, seeking medical attention is recommended.
Expected high temperatures this week
In the Midwest and Northeast, temperatures are predicted to soar to 15 degrees above average, exacerbating humidity. Nights are also expected to be very warm, with temperatures not dropping below 80 degrees.
Daytime temperatures could range from 90 to 110 degrees. New York City might hit 97 degrees, Boston around 94 degrees, and Washington, D.C. could reach up to 100 degrees. Chicago is set to see one of its hottest days in years.
Weather Channel reports that shifts in pressure and wind patterns will create a heat dome that may start to ease next week.
In contrast, snowfall is anticipated in Montana, marking unusually low temperatures for this time of year.
