 Sean Good lives in Urbandale, Iowa. Workers at the National Weather Service outside Chicago were forced to take cover, recording wind speeds up to 75 miles an hour. 120 million people are under excessive heat alerts today. Scott Henderson lives in Baltimore, where a high of 100 is expected. You take a shower to cool off, you go outside and then you're like back in the shower. You're sweating so much like it's just kind of oppressive. Odyssey meteorologist Craig Allen.