As of 10:52 AM CDT on May 12, 2025, out of 5 cities in Clark County, IL in our database, 4 cities (80%) have a UV Index reading of Low, while 1 city (20%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Marshall, IL with a reading of 2.7.
Over the next 24 hours, the highest UV Index reading in Clark County, IL is expected to be 5.9 in Marshall between 3:00 PM - 4:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |