As of 1:17 PM CDT on September 13, 2025, all 16 cities in Franklin County, IL in our database have a UV Index reading of High. The city with the highest UV Index reading right now is West Frankfort, IL with a reading of 6.3.
Over the next 24 hours, the highest UV Index reading in Franklin County, IL is expected to be 6.5 in West Frankfort between 12:00 PM - 1:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |