As of 1:14 PM MST on November 12, 2025, all 12 cities in Platte County, WY in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Guernsey, WY with a reading of 2.3.
Over the next 24 hours, the highest UV Index reading in Platte County, WY is expected to be 2.8 in Chugwater between 12:00 PM - 1:00 PM MST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |