The National Weather Service has issued a heat advisory for St. Louis through Sunday at 7:00 p.m. The heat index values are expected to be between 105° and 107°. Here are the symptoms of heat-related illness you need to be aware of, if you will be spending a lot of time outdoors.
We have scattered thunderstorms right now. Here's a link, if you want to check the weather. It looks like more of this storm is still coming from the west this evening, and I hear rolling thunder right now.