The Infectious risk has shown an upward trend over the past 12 weeks, with the most recent week notably higher than earlier in the window..
Allergy risk activity has been trending downward over the past 12 weeks in Washington, Illinois.
Pollution risk activity has been climbing over the past 12 weeks in Washington, Illinois.
Weather risk activity has been trending upward over the past 12 weeks in Washington, Illinois.
Last updated: July 6, 2026
Data refreshed weekly