The Infectious risk has fallen noticeably over the past 12 weeks, with the most recent week notably lower than earlier in the window..
Allergy risk activity has been trending upward over the past 12 weeks in Mellette, South Dakota.
No Pollution activity has been reported over the past 12 weeks in Mellette, South Dakota.
Weather risk activity has held steady over the past 12 weeks in Mellette, South Dakota.
Last updated: July 6, 2026
Data refreshed weekly