As of 4:16 PM CDT on May 18, 2026, out of 24 cities in Rock Island County, IL in our database, 19 cities (79%) have a UV Index reading of Moderate, while 5 cities (21%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Andalusia, IL with a reading of 3.8.
Over the next 24 hours, the highest UV Index reading in Rock Island County, IL is expected to be 4.3 in Illinois City between 3:00 PM - 4:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |