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