As of 1:53 PM EDT on September 5, 2026, all 13 cities in Knox County, IN in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Monroe City, IN with a reading of 7.6.
Over the next 24 hours, the highest UV Index reading in Knox County, IN is expected to be 8.1 in Decker between 2:00 PM - 3:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |