As of 1:11 PM MDT on October 6, 2025, out of 478 cities in Colorado in our database, 250 cities (52%) have a UV Index reading of High, 216 cities (45%) have a UV Index reading of Moderate, while 12 cities (3%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Stonewall Gap, CO with a reading of 6.9.
Over the next 24 hours, the highest UV Index reading in Colorado is expected to be 6.9 in Stonewall Gap between 1:00 PM - 2:00 PM MDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |