As of 11:13 AM CDT on September 21, 2025, out of 11 cities in Lake County, SD in our database, 10 cities (91%) have a UV Index reading of Low, while 1 city (9%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Rustic Acres Colony, SD with a reading of 3.2.
Over the next 24 hours, the highest UV Index reading in Lake County, SD is expected to be 5.3 in Rustic Acres Colony between 2:00 PM - 3:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |