Prince William County, VA: Current UV Index and Hourly Forecast

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As of 5:04 PM EDT on August 8, 2025, all 24 cities in Prince William County, VA in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Gainesville, VA with a reading of 2.6.

Over the next 24 hours, the highest UV Index reading in Prince William County, VA is expected to be 9 in Cherry Hill between 1:00 PM - 2:00 PM EDT tomorrow.

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Current UV Index in Cities in Prince William County, VA

• Buckhall - 2.5
• Bull Run - 2.5
• Bull Run Mountain Estates - 2.5
• Cherry Hill - 2.5
• County Center - 2.5
• Dale City - 2.5
• Dumfries - 2.5
• Gainesville - 2.6
• Haymarket - 2.6
• Independent Hill - 2.5
• Innovation - 2.5
• Lake Ridge - 2.5
• Linton Hall - 2.5
• Loch Lomond - 2.5
• Montclair - 2.5
• Nokesville - 2.5
• Occoquan - 2.5
• Potomac Mills - 2.5
• Quantico - 2.5
• Quantico Base - 2.5
• Sudley - 2.5
• Triangle - 2.5
• Woodbridge - 2.5
• Yorkshire - 2.5