As of 12:18 PM CDT on September 18, 2025, all 3 cities in Marion County, MS in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Columbia, MS with a reading of 7.5.
Over the next 24 hours, the highest UV Index reading in Marion County, MS is expected to be 8.1 in Columbia between 1:00 PM - 2:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |