As of 3:47 PM CST on January 18, 2026, all 7 cities in Major County, OK in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Chester, OK with a reading of 1.3.
Over the next 24 hours, the highest UV Index reading in Major County, OK is expected to be 2.2 in Chester between 1:00 PM - 2:00 PM CST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |