As of 11:18 AM CST on March 2, 2026, all 3 cities in Marion County, MO in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Hannibal, MO with a reading of 3.6.
Over the next 24 hours, the highest UV Index reading in Marion County, MO is expected to be 3.9 in Hannibal between 12:00 PM - 1:00 PM CST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |