Frederick County, MD: Current UV Index and Hourly Forecast

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As of 1:33 PM EST on February 23, 2026, all 27 cities in Frederick County, MD in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Green Valley, MD with a reading of 2.8.

Over the next 24 hours, the highest UV Index reading in Frederick County, MD is expected to be 3.3 in Frederick between 12:00 PM - 1:00 PM EST tomorrow.

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Current UV Index in Cities in Frederick County, MD

• Adamstown - 2.7
• Ballenger Creek - 2.7
• Bartonsville - 2.8
• Braddock Heights - 2.7
• Brunswick - 2.6
• Buckeystown - 2.7
• Burkittsville - 2.7
• Emmitsburg - 2.7
• Frederick - 2.7
• Graceham - 2.7
• Green Valley - 2.8
• Jefferson - 2.7
• Lewistown - 2.7
• Libertytown - 2.8
• Linganore - 2.8
• Middletown - 2.7
• Monrovia - 2.8
• Myersville - 2.7
• New Market - 2.8
• Point of Rocks - 2.7
• Rosemont - 2.7
• Sabillasville - 2.5
• Spring Ridge - 2.8
• Thurmont - 2.7
• Urbana - 2.8
• Walkersville - 2.8
• Woodsboro - 2.8