As of 5:23 PM MDT on October 31, 2025, all 5 cities in Union County, NM in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Clayton, NM with a reading of 0.3.
Over the next 24 hours, the highest UV Index reading in Union County, NM is expected to be 4.6 in Folsom 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 |