The Infectious risk has stayed within a narrow range over the last 12 weeks, with the most recent week close to the 12-week average..
Allergy risk activity has remained stable over the past 12 weeks in Grundy, Illinois.
No Pollution activity has been reported over the past 12 weeks in Grundy, Illinois.
Weather risk activity has been decreasing over the past 12 weeks in Grundy, Illinois.
Last updated: August 24, 2026
Data refreshed weekly