The Infectious risk has shown little change over the last 12 weeks, with high levels persisting through the latest week..
Allergy risk activity has held steady over the past 12 weeks in Lake, Illinois.
No Pollution activity has been reported over the past 12 weeks in Lake, Illinois.
Weather risk activity has been decreasing over the past 12 weeks in Lake, Illinois.
Last updated: August 24, 2026
Data refreshed weekly