Loudoun County, VA: Current UV Index and Hourly Forecast

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As of 12:02 PM EDT on April 22, 2025, all 29 cities in Loudoun County, VA in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Purcellville, VA with a reading of 6.8.

Over the next 24 hours, the highest UV Index reading in Loudoun County, VA is expected to be 7.4 in Middleburg between 1:00 PM - 2:00 PM EDT today.

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Current UV Index in Cities in Loudoun County, VA

• Aldie - 6.7
• Arcola - 6.6
• Ashburn - 6.6
• Belmont - 6.6
• Brambleton - 6.6
• Broadlands - 6.6
• Cascades - 6.6
• Countryside - 6.6
• Dulles Town Center - 6.6
• Goose Creek Village - 6.6
• Hamilton - 6.8
• Hillsboro - 6.8
• Kincora - 6.6
• Lansdowne - 6.6
• Leesburg - 6.6
• Loudoun Valley Estates - 6.6
• Lovettsville - 6.8
• Lowes Island - 6.7
• Middleburg - 6.7
• Oak Grove - 6.6
• One Loudoun - 6.6
• Purcellville - 6.8
• Round Hill - 6.8
• South Riding - 6.6
• Sterling - 6.6
• Stone Ridge - 6.6
• Sugarland Run - 6.6
• University Center - 6.6
• Waterford - 6.8