As of 3:13 PM CDT on May 24, 2026, out of 12 cities in Jackson County, IL in our database, 7 cities (58%) have a UV Index reading of Moderate, while 5 cities (42%) have a UV Index reading of High. The city with the highest UV Index reading right now is Grand Tower, IL with a reading of 6.6.
Over the next 24 hours, the highest UV Index reading in Jackson County, IL is expected to be 9 in Ava 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 |