As of 3:54 PM CDT on August 18, 2026, out of 16 cities in Hancock County, IL in our database, 11 cities (69%) have a UV Index reading of Moderate, while 5 cities (31%) have a UV Index reading of High. The city with the highest UV Index reading right now is Nauvoo, IL with a reading of 5.7.
Over the next 24 hours, the highest UV Index reading in Hancock County, IL is expected to be 6.8 in Bowen between 2:00 PM - 3:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |