Frederick County, MD: Current UV Index and Hourly Forecast

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As of 1:54 PM EDT on August 3, 2026, out of 27 cities in Frederick County, MD in our database, 17 cities (63%) have a UV Index reading of High, while 10 cities (37%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Green Valley, MD with a reading of 7.5.

Over the next 24 hours, the highest UV Index reading in Frederick County, MD is expected to be 7.5 in Green Valley between 1:00 PM - 2:00 PM EDT today.

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Current UV Index in Cities in Frederick County, MD

• Adamstown - 7
• Ballenger Creek - 6.5
• Bartonsville - 7.5
• Braddock Heights - 6.5
• Brunswick - 7.2
• Buckeystown - 7
• Burkittsville - 5.9
• Emmitsburg - 7.4
• Frederick - 6.5
• Graceham - 6.5
• Green Valley - 7.5
• Jefferson - 7
• Lewistown - 6.5
• Libertytown - 7.5
• Linganore - 7.5
• Middletown - 6.5
• Monrovia - 7.5
• Myersville - 6.5
• New Market - 7.5
• Point of Rocks - 7
• Rosemont - 7
• Sabillasville - 5.8
• Spring Ridge - 7.5
• Thurmont - 6.5
• Urbana - 7.5
• Walkersville - 7.5
• Woodsboro - 7.5