As of 4:07 PM CDT on May 20, 2026, out of 9 cities in Lyon County, KS in our database, 5 cities (56%) have a UV Index reading of Moderate, while 4 cities (44%) have a UV Index reading of High. The city with the highest UV Index reading right now is Allen, KS with a reading of 5.7.
Over the next 24 hours, the highest UV Index reading in Lyon County, KS is expected to be 5.7 in Allen between 4:00 PM - 5:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |