Infectious Diseases is Low in Detroit, Detroit, Ann Arbor, and Grand Rapids.
Allergy is High in Ann Arbor, Very High in Grand Rapids, and Extreme in Detroit and Detroit.
Pollution is Low in Detroit, Ann Arbor, and Grand Rapids, and Moderate in Detroit.
Severe Weather is Low in Detroit, Detroit, Ann Arbor, and Grand Rapids.
Last updated: August 31, 2026
Data refreshed weekly