As of 3:29 PM MDT on June 11, 2026, out of 12 cities in Platte County, WY in our database, 8 cities (67%) have a UV Index reading of Very High, while 4 cities (33%) have a UV Index reading of High. The city with the highest UV Index reading right now is Chugwater, WY with a reading of 7.7.
Over the next 24 hours, the highest UV Index reading in Platte County, WY is expected to be 10.2 in Chugwater 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 |