The Infectious risk has fallen noticeably over the last 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 Hamlin, South Dakota.
Pollution risk activity has been climbing over the past 12 weeks in Hamlin, South Dakota.
Weather risk activity has been trending upward over the past 12 weeks in Hamlin, South Dakota.
Last updated: July 6, 2026
Data refreshed weekly