As of 10:29 AM MST on February 23, 2025, all 9 cities in Summit County, CO in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Silverthorne, CO with a reading of 3.4.
Over the next 24 hours, the highest UV Index reading in Summit County, CO is expected to be 5.3 in Silverthorne between 12:00 PM - 1:00 PM MST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |