UV Index Today in Fairfax County, Virginia (VA) Sunday, September 20, 2026 -12:23 PM EDT (GMT-4) The average maximum UV Index today across 89 locations in Fairfax County, Virginia (VA) , is 6.4. The highest projected maximum is 6.7 in Alexandria at 1:00 PM EDT, while the lowest projected maximum is 6.3 in Arlington at 1:00 PM EDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 3.4. The highest projected maximum is 4.9 in South Riding at 1:00 PM EDT, and the lowest projected maximum is 2.8 in Centreville at 2:00 PM EDT.
89 Places in Fairfax County, Virginia (VA) Maximum UV Index Today
Brookmont - 6.4
Cabin John - 6.4
Darnestown - 6.4
Potomac - 6.4
Travilah - 6.4
Alexandria - 6.7
Annandale - 6.4
Arlington - 6.3
Bailey's Crossroads - 6.4
Belle Haven - 6.7
Braddock - 6.4
Buckhall - 6.4
Bull Run - 6.4
Burke - 6.4
Burke Centre - 6.4
Centreville - 6.4
Chantilly - 6.4
Crosspointe - 6.4
Difficult Run - 6.4
Dranesville - 6.4
Dunn Loring - 6.4
Fairfax - 6.4
Fairfax Station - 6.4
Fair Lakes - 6.4
Fair Oaks - 6.4
Falls Church - 6.4
Floris - 6.4
Fort Belvoir - 6.4
Fort Hunt - 6.7
Franconia - 6.4
Franklin Farm - 6.4
George Mason - 6.4
Great Falls - 6.4
Great Falls Crossing - 6.4
Greenbriar - 6.4
Groveton - 6.7
Hayfield - 6.4
Herndon - 6.4
Huntington - 6.7
Hutchison - 6.4
Hybla Valley - 6.7
Idylwood - 6.4
Kings Park - 6.4
Kings Park West - 6.4
Kingstowne - 6.4
Lake Barcroft - 6.4
Lake Ridge - 6.4
Laurel Hill - 6.4
Lincolnia - 6.4
Loch Lomond - 6.4
Long Branch - 6.4
Lorton - 6.4
Lowes Island - 6.4
McLean - 6.4
McNair - 6.4
Mantua - 6.4
Mason Neck - 6.4
Merrifield - 6.4
Mount Vernon - 6.7
Navy - 6.4
Newington - 6.4
Newington Forest - 6.4
North Springfield - 6.4
Oak Grove - 6.4
Oakton - 6.4
Occoquan - 6.4
Pimmit Hills - 6.4
Ravensworth - 6.4
Reston - 6.4
Rose Hill - 6.7
Seven Corners - 6.4
South Riding - 6.4
South Run - 6.4
Springfield - 6.4
Sterling - 6.4
Sudley - 6.4
Sugarland Run - 6.4
Sully Square - 6.4
Tysons - 6.4
Union Mill - 6.4
Vienna - 6.4
Wakefield - 6.4
West Falls Church - 6.4
West Springfield - 6.4
Wolf Trap - 6.4
Woodbridge - 6.4
Woodburn - 6.4
Woodlawn - 6.7
Yorkshire - 6.4