As of 2:00 PM CDT on September 5, 2026, out of 11 cities in St. Tammany Parish, LA in our database, 4 cities (36%) have a UV Index reading of Very High, 4 cities (36%) have a UV Index reading of High, while 3 cities (27%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Lacombe, LA with a reading of 9.1.
Over the next 24 hours, the highest UV Index reading in St. Tammany Parish, LA is expected to be 9.2 in Slidell between 12:00 PM - 1:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |