As of 4:47 PM CDT on May 21, 2026, all 19 cities in Johnson County, KS in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Overland Park, KS with a reading of 2.1.
Over the next 24 hours, the highest UV Index reading in Johnson County, KS is expected to be 5.8 in Overland Park between 3:00 PM - 4:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |