As of 3:20 PM CDT on June 18, 2026, out of 16 cities in Brown County, SD in our database, 15 cities (94%) have a UV Index reading of Low, while 1 city (6%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Hecla, SD with a reading of 2.6.
Over the next 24 hours, the highest UV Index reading in Brown County, SD is expected to be 8.5 in Warner between 2:00 PM - 3:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |