As of 4:36 PM MDT on June 6, 2026, out of 478 cities in Colorado in our database, 298 cities (62%) have a UV Index reading of Moderate, 160 cities (33%) have a UV Index reading of High, while 20 cities (4%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Silverton, CO with a reading of 6.5.
Over the next 24 hours, the highest UV Index reading in Colorado is expected to be 12.3 in South Fork 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 |