Low Covid-19 risk in Custer, South Dakota.
Low Flu risk in Custer, South Dakota.
Low Rsv risk in Custer, South Dakota.
Low Infectious risk in Custer, South Dakota.
Low Allergy risk in Custer, South Dakota.
Low Pollution risk in Custer, South Dakota.
High Weather risk in Custer, South Dakota.
Last updated: April 20, 2026
Data refreshed weekly