As of 2:52 PM MDT on September 11, 2025, out of 12 cities in Platte County, WY in our database, 7 cities (58%) have a UV Index reading of Moderate, while 5 cities (42%) have a UV Index reading of High. The city with the highest UV Index reading right now is Slater, WY with a reading of 6.4.
Over the next 24 hours, the highest UV Index reading in Platte County, WY is expected to be 6.4 in Slater 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 |