The Infectious risk has shown a gradual increase over the last 12 weeks, ending the period at its highest level..
Allergy risk activity has remained stable over the past 12 weeks in Richland, Ohio.
No Pollution activity has been reported over the past 12 weeks in Richland, Ohio.
Weather risk activity has been decreasing over the past 12 weeks in Richland, Ohio.
Last updated: August 31, 2026
Data refreshed weekly