As of 9:48 PM CST on January 17, 2026, all 24 cities in Rock Island County, IL in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Rock Island County, IL is expected to be 1.2 in Port Byron between 11:00 AM - 12:00 PM CST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |