As of 1:24 PM MDT on May 23, 2026, out of 4 cities in Weston County, WY in our database, 3 cities (75%) have a UV Index reading of High, while 1 city (25%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Upton, WY with a reading of 7.6.
Over the next 24 hours, the highest UV Index reading in Weston County, WY is expected to be 7.9 in Newcastle between 12:00 PM - 1:00 PM MDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |