As of 3:36 PM CDT on August 17, 2026, all 14 cities in St. Charles Parish, LA in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Des Allemands, LA with a reading of 6.9.
Over the next 24 hours, the highest UV Index reading in St. Charles Parish, LA is expected to be 9.1 in Luling 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 |