St. Mary's County, MD: Current UV Index and Hourly Forecast

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As of 3:51 PM EST on January 20, 2026, all 11 cities in St. Mary's County, MD in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is California, MD with a reading of 0.7.

Over the next 24 hours, the highest UV Index reading in St. Mary's County, MD is expected to be 2.4 in St. George Island between 12:00 PM - 1:00 PM EST tomorrow.

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Current UV Index in Cities in St. Mary's County, MD

• California - 0.7
• Callaway - 0.7
• Charlotte Hall - 0.7
• Golden Beach - 0.7
• Leonardtown - 0.7
• Lexington Park - 0.7
• Mechanicsville - 0.7
• Piney Point - 0.7
• St. George Island - 0.7
• Tall Timbers - 0.7
• Wildewood - 0.7