As of 10:37 AM MST on January 21, 2026, all 9 cities in Sheridan County, WY in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Ranchester, WY with a reading of 0.8.
Over the next 24 hours, the highest UV Index reading in Sheridan County, WY is expected to be 1.4 in Story between 12:00 PM - 1:00 PM MST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |