As of 4:09 PM CDT on May 17, 2026, all 8 cities in Warren County, MO in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Warrenton, MO with a reading of 4.8.
Over the next 24 hours, the highest UV Index reading in Warren County, MO is expected to be 9.4 in Warrenton 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 |