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

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As of 12:04 PM EDT on May 17, 2025, out of 24 cities in Prince William County, VA in our database, 23 cities (96%) have a UV Index reading of Very High, while 1 city (4%) have a UV Index reading of High. The city with the highest UV Index reading right now is Dale City, VA with a reading of 7.5.

Over the next 24 hours, the highest UV Index reading in Prince William County, VA is expected to be 8.3 in Gainesville between 1:00 PM - 2:00 PM EDT today.

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Current UV Index in Cities in Prince William County, VA

• Buckhall - 7.5
• Bull Run - 7.5
• Bull Run Mountain Estates - 7.4
• Cherry Hill - 7.5
• County Center - 7.5
• Dale City - 7.5
• Dumfries - 7.5
• Gainesville - 7.5
• Haymarket - 7.5
• Independent Hill - 7.5
• Innovation - 7.5
• Lake Ridge - 7.5
• Linton Hall - 7.5
• Loch Lomond - 7.5
• Montclair - 7.5
• Nokesville - 7.5
• Occoquan - 7.5
• Potomac Mills - 7.5
• Quantico - 7.5
• Quantico Base - 7.5
• Sudley - 7.5
• Triangle - 7.5
• Woodbridge - 7.5
• Yorkshire - 7.5