Heatwave Sweeps Across U.S. Midwest and Northeast, Threatening Major Cities

A blistering heat wave that has scorched the American South and Southwest is now spreading to the Midwest, with temperatures exceeding 100 degrees and dangerous conditions for millions of people. State and local officials are urging residents to avoid the outdoors, as the intense heat and humidity are expected to linger for days. Adding to the discomfort, Canadian wildfire smoke has settled over parts of the Midwest, leading to unhealthy air quality. The combination of high heat, humidity, and smoky air is unusual for the region, posing health risks, especially for older people and those with respiratory conditions. The extreme weather is a result of global warming, and scientists warn that extreme heat events will become more frequent, longer, and more intense unless carbon emissions are reduced.