As of 4:30 PM MDT on October 3, 2026, out of 478 cities in Colorado in our database, 358 cities (75%) have a UV Index reading of Moderate, while 120 cities (25%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Towaoc, CO with a reading of 3.5.
Over the next 24 hours, the highest UV Index reading in Colorado is expected to be 7.9 in Silverton 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 |