As of 6:05 PM MDT on September 15, 2025, all 2 cities in Los Alamos County, NM in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Los Alamos, NM with a reading of 0.5.
Over the next 24 hours, the highest UV Index reading in Los Alamos County, NM is expected to be 8.9 in White Rock 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 |