As of 2:59 PM CDT on April 20, 2025, out of 13 cities in Marion County, IL in our database, 12 cities (92%) have a UV Index reading of High, while 1 city (8%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Iuka, IL with a reading of 6.6.
Over the next 24 hours, the highest UV Index reading in Marion County, IL is expected to be 6.6 in Iuka 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 |