The Infectious risk has remained broadly stable over the past 12 weeks, with high levels persisting through the latest week..
Allergy risk activity has been trending upward over the past 12 weeks in Ottawa, Ohio.
Pollution risk activity has been increasing over the past 12 weeks in Ottawa, Ohio.
Weather risk activity has been climbing over the past 12 weeks in Ottawa, Ohio.
Last updated: July 6, 2026
Data refreshed weekly