Infectious Diseases is Low in Detroit, Detroit, Ann Arbor, and Grand Rapids.
Allergy is Moderate in Ann Arbor, Very High in Grand Rapids, and Extreme in Detroit and Detroit.
Pollution is Low in Detroit, Detroit, Ann Arbor, and Grand Rapids.
Severe Weather is Low in Detroit, Detroit, Ann Arbor, and Grand Rapids.
Last updated: August 24, 2026
Data refreshed weekly