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