As of 4:00 AM MDT on May 18, 2025, all 7 cities in Oglala Lakota County, SD in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Oglala Lakota County, SD is expected to be 5.6 in Porcupine between 12:00 PM - 1:00 PM MDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |