US Heat Wave Map: Forecast Live Temperature Tracker

Published: Thursday, June 19, 2025 at 9:07 pm

US Braces for Intense Heat Wave, Millions at Risk

A significant heat wave is poised to grip a large swath of the United States in the coming days, bringing with it soaring temperatures and oppressive humidity. Meteorologists predict a high-pressure system, often referred to as a "heat dome," will cause daytime temperatures to reach the 90s Fahrenheit (30s Celsius) across a wide area, with little respite expected at night as temperatures remain in the mid-70s Fahrenheit (mid-20s Celsius).

Interactive maps are tracking the progression and severity of the heat. The most severe impacts are anticipated in several states, including Nebraska, Illinois, Wisconsin, and Iowa. Officials are warning of heightened health risks, particularly over the weekend. The combination of high temperatures and intense humidity could make it feel as though temperatures are 20 degrees higher than the actual reading in some areas.

Major cities such as Chicago, Denver, Washington, D.C., and New York are all forecast to experience temperatures in the mid to upper 90s Fahrenheit, with some areas potentially reaching triple digits. The National Weather Service (NWS) has issued a special heat risk scale, with several states, including parts of Nebraska, Kansas, Iowa, Missouri, and Illinois, facing the most severe rating, a category 4. This level of heat poses significant dangers, especially for vulnerable populations, if access to cooling and hydration is limited.

The heat dome, a high-pressure system that traps heat and moisture, is being driven by seasonal weather patterns and moisture drawn from the Gulf of Mexico. While the influx of moisture from the Gulf is typical for this time of year, the scale of this event is notable. Even typically dry areas, such as Denver, are expected to experience a spike in temperatures. Corn-growing regions may face added discomfort due to "corn sweat," a phenomenon where crops release moisture, further increasing humidity. The extreme heat is expected to persist into next week, potentially setting the stage for a long, hot summer.

BNN's Perspective: The impending heat wave underscores the importance of preparedness and public awareness. While extreme weather events are becoming more common, proactive measures, such as access to cooling centers and public health messaging, can mitigate the most severe impacts. It is crucial for individuals, especially those most vulnerable, to take precautions and stay informed about the evolving weather conditions.

Keywords: heat wave, temperature, humidity, heat dome, weather, forecast, extreme heat, health risks, National Weather Service, Midwest, Northeast, Gulf of Mexico, Denver, Chicago, New York, Iowa, Nebraska, Illinois, Kansas, Missouri, public health, weather warnings

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