As of 2:28 PM CDT on April 27, 2026, out of 8 cities in Johnson County, AR in our database, 4 cities (50%) have a UV Index reading of Moderate, while 4 cities (50%) have a UV Index reading of High. The city with the highest UV Index reading right now is Clarksville, AR with a reading of 6.6.
Over the next 24 hours, the highest UV Index reading in Johnson County, AR is expected to be 7.6 in Coal Hill between 3:00 PM - 4:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |