(This content was created with the help of AI.) A vast lid of hot air is settling over the central US and, by Fourth of July weekend, is expected to sprawl eastward and put roughly 200 million people under sweltering conditions.
Forecasters said a strengthening “heat dome” will drive temperatures into the 90s and near 100 degrees from the Mississippi and Ohio valleys to parts of the East, with humidity pushing how it feels into triple digits and, in some spots, above 110.
Chicago could log four or five straight days at 90 or higher; St. Louis may see at least eight, AccuWeather reports. Dew points in the 70s—unusual for the Midwest and Northeast—will make it harder for bodies to cool down and raise the risk of heat-related illness…