Perseid Meteor Shower Viewing events near Chicago
The Astronomical League's list of astronomy clubs leads to these opportunities:


The Skokie Valley Astronomers have a meeting at the Ryerson Forest Preserve in Riverwoods on Friday the 10th.
Some Naperville Astronomical Association members will be at a stargazing picnic at Cantigny Park in Wheaton on Saturday the 11th.


Like most meteor showers, the Perseids produce more meteors in the early morning, but there should be some in the late evening.