Chicago is known as the Windy City, but it is less windy than many other big American cities. Wind speeds range from 8 miles per hour (13 km/h) in late summer to 12 miles per hour (19 km/h) in spring months. The "Windy City" nickname could be connected to Chicago politicians from the 1800s. When Chicago hosted the World's Fair, citizens of Chicago started to brag about it. They bragged so much that the city of Chicago became known as "The Windy City. The phrase may have also been created by Chicago tourism boosters promoting the city. They suggested that the cool breezes from Lake Michigan make Chicago a good summer destination.