Loudoun County, VA: Current UV Index and Hourly Forecast

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As of 2:34 PM EST on November 4, 2026, all 29 cities in Loudoun County, VA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Leesburg, VA with a reading of 2.3.

Over the next 24 hours, the highest UV Index reading in Loudoun County, VA is expected to be 3.1 in Leesburg between 12:00 PM - 1:00 PM EST tomorrow.

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Current UV Index in Cities in Loudoun County, VA

• Aldie - 2.2
• Arcola - 2.3
• Ashburn - 2.3
• Belmont - 2.3
• Brambleton - 2.3
• Broadlands - 2.3
• Cascades - 2.3
• Countryside - 2.3
• Dulles Town Center - 2.3
• Goose Creek Village - 2.3
• Hamilton - 2.2
• Hillsboro - 2.2
• Kincora - 2.3
• Lansdowne - 2.3
• Leesburg - 2.3
• Loudoun Valley Estates - 2.3
• Lovettsville - 2.2
• Lowes Island - 2.3
• Middleburg - 2.2
• Oak Grove - 2.3
• One Loudoun - 2.3
• Purcellville - 2.2
• Round Hill - 2.2
• South Riding - 2.3
• Sterling - 2.3
• Stone Ridge - 2.3
• Sugarland Run - 2.3
• University Center - 2.3
• Waterford - 2.3