St. Mary Parish, LA: Current UV Index and Hourly Forecast

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As of 11:20 AM CDT on July 4, 2026, all 12 cities in St. Mary Parish, LA in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Morgan City, LA with a reading of 8.

Over the next 24 hours, the highest UV Index reading in St. Mary Parish, LA is expected to be 11.1 in Franklin between 1:00 PM - 2:00 PM CDT today.

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Current UV Index in Cities in St. Mary Parish, LA

• Amelia - 8
• Baldwin - 8
• Bayou Vista - 8
• Berwick - 8
• Centerville - 8
• Charenton - 8
• Franklin - 8
• Glencoe - 8
• Morgan City - 8
• Patterson - 8
• Siracusaville - 8
• Sorrel - 8