St. John the Baptist Parish, LA: Current UV Index and Hourly Forecast

As of 12:09 PM CDT on May 11, 2026, all 6 cities in St. John the Baptist Parish, LA in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Garyville, LA with a reading of 8.4.

Over the next 24 hours, the highest UV Index reading in St. John the Baptist Parish, LA is expected to be 9.5 in Garyville between 1:00 PM - 2:00 PM CDT today.

Search Cities in St. John the Baptist Parish, LA

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in St. John the Baptist Parish, LA as of 12:09 PM CDT, May 11, 2026

Current UV Index in Cities in St. John the Baptist Parish, LA

12:09 PM CDT, May 11, 2026