UV Index Forecast for Illinois
The city with the highest UV index this hour (4:00 pm) in Illinois, USA is Rockford at 2.6 (Low). Today, the peak UV index for Illinois will be in Chicago, around 1:00 pm at 7.7 (High). Over the next five days the peak UV index in Illinois will be 8.8 (Very High) and will occur on Thursday, August 21st in Chicago around 1:00 pm.
| Range | 1-2 | 3-5 | 6-7 | 8-10 | 11+ |
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |
Last Updated 50 minutes ago
UV Index Forecast by County in Illinois
Below is a list of counties in Illinois, USA. Click on any county below and you'll get a list of cities where we provide UV index forecasts.