The Infectious risk has shown little change over the past 12 weeks, with the most recent week close to the 12-week average..
Allergy risk activity has been trending upward over the past 12 weeks in Hillsdale, Michigan.
Pollution risk activity has been trending upward over the past 12 weeks in Hillsdale, Michigan.
Weather risk activity has been trending upward over the past 12 weeks in Hillsdale, Michigan.
Last updated: July 13, 2026
Data refreshed weekly