As of 3:18 PM MDT on May 18, 2025, out of 15 cities in Adams County, CO in our database, 12 cities (80%) have a UV Index reading of Moderate, while 3 cities (20%) have a UV Index reading of High. The city with the highest UV Index reading right now is Thornton, CO with a reading of 5.6.
Over the next 24 hours, the highest UV Index reading in Adams County, CO is expected to be 8.2 in Brighton 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 |