As of 3:00 PM CDT on July 15, 2025, out of 12 cities in St. Mary Parish, LA in our database, 6 cities (50%) have a UV Index reading of Very High, while 6 cities (50%) have a UV Index reading of High. The city with the highest UV Index reading right now is Glencoe, LA with a reading of 8.8.
Over the next 24 hours, the highest UV Index reading in St. Mary Parish, LA is expected to be 11.4 in Morgan City 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 |