As of 1:12 PM CDT on July 31, 2026, out of 15 cities in Lafourche Parish, LA in our database, 11 cities (73%) have a UV Index reading of Very High, while 4 cities (27%) have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Galliano, LA with a reading of 10.9.
Over the next 24 hours, the highest UV Index reading in Lafourche Parish, LA is expected to be 10.9 in Galliano 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 |