As of 3:26 PM MDT on May 12, 2026, out of 19 cities in Sweetwater County, WY in our database, 16 cities (84%) have a UV Index reading of Very High, while 3 cities (16%) have a UV Index reading of High. The city with the highest UV Index reading right now is North Rock Springs, WY with a reading of 7.7.
Over the next 24 hours, the highest UV Index reading in Sweetwater County, WY is expected to be 9 in Wamsutter between 1:00 PM - 2:00 PM MDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |