As of 12:17 PM CDT on May 18, 2025, all 5 cities in Harper County, OK in our database have a UV Index reading of High. The city with the highest UV Index reading right now is May, OK with a reading of 7.1.
Over the next 24 hours, the highest UV Index reading in Harper County, OK is expected to be 9.7 in May 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 |