As of 3:39 PM EDT on August 17, 2026, out of 7 cities in Decatur County, IN in our database, 6 cities (86%) have a UV Index reading of High, while 1 city (14%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Lake Santee, IN with a reading of 7.1.
Over the next 24 hours, the highest UV Index reading in Decatur County, IN is expected to be 8.4 in Greensburg between 2:00 PM - 3:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |