Loudoun County, VA: Current UV Index and Hourly Forecast

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As of 8:14 AM EDT on March 29, 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 0.3.

Over the next 24 hours, the highest UV Index reading in Loudoun County, VA is expected to be 5.9 in Leesburg between 1:00 PM - 2:00 PM EDT today.

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Current UV Index in Cities in Loudoun County, VA

• Aldie - 0.3
• Arcola - 0.3
• Ashburn - 0.3
• Belmont - 0.3
• Brambleton - 0.3
• Broadlands - 0.3
• Cascades - 0.3
• Countryside - 0.3
• Dulles Town Center - 0.3
• Goose Creek Village - 0.3
• Hamilton - 0.3
• Hillsboro - 0.3
• Kincora - 0.3
• Lansdowne - 0.3
• Leesburg - 0.3
• Loudoun Valley Estates - 0.3
• Lovettsville - 0.3
• Lowes Island - 0.3
• Middleburg - 0.3
• Oak Grove - 0.3
• One Loudoun - 0.3
• Purcellville - 0.3
• Round Hill - 0.3
• South Riding - 0.3
• Sterling - 0.3
• Stone Ridge - 0.3
• Sugarland Run - 0.3
• University Center - 0.3
• Waterford - 0.3