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 Calhoun, Illinois.
No Pollution activity has been reported over the past 12 weeks in Calhoun, Illinois.
Weather risk activity has been decreasing over the past 12 weeks in Calhoun, Illinois.
Last updated: August 24, 2026
Data refreshed weekly