The Infectious risk has stayed within a narrow range over the past 12 weeks, with high levels persisting through the latest week..
Allergy risk activity has held steady over the past 12 weeks in Will, Illinois.
Pollution risk activity has been increasing over the past 12 weeks in Will, Illinois.
Weather risk activity has been trending downward over the past 12 weeks in Will, Illinois.
Last updated: August 24, 2026
Data refreshed weekly