As of 11:33 AM MDT on May 21, 2026, out of 17 cities in Natrona County, WY in our database, 14 cities (82%) have a UV Index reading of Moderate, while 3 cities (18%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Alcova, WY with a reading of 4.9.
Over the next 24 hours, the highest UV Index reading in Natrona County, WY is expected to be 6.4 in Alcova between 2:00 PM - 3:00 PM MDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |