As of 10:45 AM CDT on September 25, 2026, all 3 cities in Greer County, OK in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Granite, OK with a reading of 2.
Over the next 24 hours, the highest UV Index reading in Greer County, OK is expected to be 6.8 in Mangum 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 |