Infectious risk activity has been stable over the past 12 weeks in Houghton, Michigan.
Allergy risk activity has been increasing over the past 12 weeks in Houghton, Michigan.
No Pollution activity has been reported over the past 12 weeks in Houghton, Michigan.
Weather risk activity has been increasing over the past 12 weeks in Houghton, Michigan.
Last updated: May 25, 2026
Data refreshed weekly