The Infectious risk has climbed over the last 12 weeks, ending the period at its highest level..
Allergy risk activity has held steady 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 stayed relatively flat over the past 12 weeks in Richland, Ohio.
Last updated: August 24, 2026
Data refreshed weekly