As of 1:54 PM CDT on May 13, 2026, all 2 cities in Harmon County, OK in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Hollis, OK with a reading of 9.2.
Over the next 24 hours, the highest UV Index reading in Harmon County, OK is expected to be 9.4 in Hollis between 2:00 PM - 3:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |