The Infectious risk has climbed over the last 12 weeks, with the most recent week notably higher than earlier in the window..
Allergy risk activity has been trending upward over the past 12 weeks in McCook, South Dakota.
No Pollution activity has been reported over the past 12 weeks in McCook, South Dakota.
Weather risk activity has been decreasing over the past 12 weeks in McCook, South Dakota.
Last updated: August 24, 2026
Data refreshed weekly