Infectious Diseases prevalence is High in Chicago, and Low in Springfield, Bloomington, and Peoria.
Allergy prevalence is Extreme in Chicago, Springfield, Bloomington, and Peoria.
Pollution prevalence is Low in Chicago, Springfield, Bloomington, and Peoria.
Severe Weather prevalence is Low in Chicago, Springfield, Bloomington, and Peoria.
Last updated: October 14, 2026
Data refreshed weekly