As of 2:29 PM MDT on July 21, 2026, all 5 cities in Rio Grande County, CO in our database have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Monte Vista, CO with a reading of 11.6.
Over the next 24 hours, the highest UV Index reading in Rio Grande County, CO is expected to be 11.6 in Monte Vista 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 |