Frederick County, MD: Current UV Index and Hourly Forecast

• USA →
• Maryland →
• Frederick County

As of 3:42 PM EDT on August 23, 2026, all 27 cities in Frederick County, MD in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Green Valley, MD with a reading of 5.7.

Over the next 24 hours, the highest UV Index reading in Frederick County, MD is expected to be 7.4 in Frederick between 1:00 PM - 2:00 PM EDT tomorrow.

Search Cities in Frederick County, MD

Current UV Index in Cities in Frederick County, MD

• Adamstown - 5.6
• Ballenger Creek - 5.6
• Bartonsville - 5.6
• Braddock Heights - 5.6
• Brunswick - 5.6
• Buckeystown - 5.6
• Burkittsville - 5.5
• Emmitsburg - 5.6
• Frederick - 5.6
• Graceham - 5.6
• Green Valley - 5.7
• Jefferson - 5.6
• Lewistown - 5.6
• Libertytown - 5.6
• Linganore - 5.6
• Middletown - 5.6
• Monrovia - 5.7
• Myersville - 5.6
• New Market - 5.6
• Point of Rocks - 5.6
• Rosemont - 5.6
• Sabillasville - 5.6
• Spring Ridge - 5.6
• Thurmont - 5.6
• Urbana - 5.7
• Walkersville - 5.6
• Woodsboro - 5.6