As of 2:44 PM CDT on June 29, 2026, out of 8 cities in Greene County, IL in our database, 6 cities (75%) have a UV Index reading of Very High, while 2 cities (25%) have a UV Index reading of High. The city with the highest UV Index reading right now is Greenfield, IL with a reading of 8.5.
Over the next 24 hours, the highest UV Index reading in Greene County, IL is expected to be 10.4 in Carrollton between 1:00 PM - 2:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |