130 million people on alert as hot, sticky weather expected from Texas to Maine

At least 130 million people from Texas to Maine are under alert for dangerous heat and humidity over the next few days. Hot and sticky temperatures will make it feel as high as 115 degrees in parts of the Mississippi River Valley. Even Niagara Falls will get no relief from the sweltering conditions; the tourist destination will feel like the mid-to-upper 90s on Thursday. The heat index in Chicago, which factors in humidity, will make it feel in the triple digits and nighttime and early-morning temperatures will provide little comfort. As of 4 a.m. Thursday, the actual temperature was 80 degrees, or 85 with the heat index. Texas will be just as hot on Thursday, as the heat index is expected to make it feel 107. Up north in Detroit, it's forecast to feel 102. Dangerous heat will spread to th