The Infectious risk has climbed over the last 12 weeks, ending the period at its highest level..
Allergy risk activity has remained stable over the past 12 weeks in Jersey, Illinois.
Pollution risk activity has been climbing over the past 12 weeks in Jersey, Illinois.
Weather risk activity has been climbing over the past 12 weeks in Jersey, Illinois.
Last updated: July 6, 2026
Data refreshed weekly