Loudoun County, VA: Current UV Index and Hourly Forecast

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As of 3:12 PM EDT on June 18, 2026, out of 29 cities in Loudoun County, VA in our database, 28 cities (97%) have a UV Index reading of Very High, while 1 city (3%) have a UV Index reading of High. The city with the highest UV Index reading right now is Purcellville, VA with a reading of 8.3.

Over the next 24 hours, the highest UV Index reading in Loudoun County, VA is expected to be 9.9 in Middleburg between 1:00 PM - 2:00 PM EDT tomorrow.

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Current UV Index in Cities in Loudoun County, VA

• Aldie - 8.3
• Arcola - 8
• Ashburn - 8
• Belmont - 8
• Brambleton - 8
• Broadlands - 8
• Cascades - 8
• Countryside - 8
• Dulles Town Center - 8
• Goose Creek Village - 8
• Hamilton - 8.3
• Hillsboro - 8.3
• Kincora - 8
• Lansdowne - 8
• Leesburg - 8
• Loudoun Valley Estates - 8
• Lovettsville - 8.3
• Lowes Island - 5.5
• Middleburg - 8.3
• Oak Grove - 8
• One Loudoun - 8
• Purcellville - 8.3
• Round Hill - 8.3
• South Riding - 8
• Sterling - 8
• Stone Ridge - 8
• Sugarland Run - 8
• University Center - 8
• Waterford - 8.2