As of 5:48 PM CDT on July 16, 2025, out of 13 cities in DeKalb County, IL in our database, 12 cities (92%) have a UV Index reading of Moderate, while 1 city (8%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Shabbona, IL with a reading of 2.6.
Over the next 24 hours, the highest UV Index reading in DeKalb County, IL is expected to be 6.4 in Sandwich between 2:00 PM - 3:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |