As of 1:35 PM CST on November 4, 2025, out of 7 cities in Lyman County, SD in our database, 6 cities (86%) have a UV Index reading of Low, while 1 city (14%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Oacoma, SD with a reading of 2.5.
Over the next 24 hours, the highest UV Index reading in Lyman County, SD is expected to be 2.5 in Oacoma between 1:00 PM - 2:00 PM CST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |