As of 12:53 PM CDT on March 13, 2026, all 3 cities in Hardin County, IL in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Rosiclare, IL with a reading of 3.3.
Over the next 24 hours, the highest UV Index reading in Hardin County, IL is expected to be 4 in Rosiclare between 11:00 AM - 12:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |