As of 10:53 AM CDT on September 9, 2026, out of 9 cities in Henderson County, IL in our database, 6 cities (67%) have a UV Index reading of Low, while 3 cities (33%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Biggsville, IL with a reading of 2.5.
Over the next 24 hours, the highest UV Index reading in Henderson County, IL is expected to be 4.7 in Stronghurst between 2:00 PM - 3:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |