Jefferson Parish, LA: Current UV Index and Hourly Forecast

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As of 1:37 PM CDT on September 18, 2025, all 21 cities in Jefferson Parish, LA in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Grand Isle, LA with a reading of 8.9.

Over the next 24 hours, the highest UV Index reading in Jefferson Parish, LA is expected to be 8.9 in Grand Isle between 1:00 PM - 2:00 PM CDT today.

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Current UV Index in Cities in Jefferson Parish, LA

• Avondale - 8.7
• Barataria - 8.8
• Bridge City - 8.7
• Elmwood - 8.7
• Estelle - 8.8
• Grand Isle - 8.9
• Gretna - 8.7
• Harahan - 8.7
• Harvey - 8.7
• Jean Lafitte - 8.8
• Jefferson - 8.7
• Kenner - 8.7
• Lafitte - 8.8
• Marrero - 8.7
• Metairie - 8.7
• River Ridge - 8.7
• Terrytown - 8.7
• Timberlane - 8.7
• Waggaman - 8.7
• Westwego - 8.7
• Woodmere - 8.8