As of 5:08 PM CDT on July 8, 2026, out of 14 cities in Randolph County, IL in our database, 12 cities (86%) have a UV Index reading of Moderate, while 2 cities (14%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Sparta, IL with a reading of 2.8.
Over the next 24 hours, the highest UV Index reading in Randolph County, IL is expected to be 9.5 in Red Bud between 1:00 PM - 2:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |