UV Index Today in Loudoun County, Virginia (VA)
Sunday, September 20, 2026 -12:23 PM EDT (GMT-4)
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The average maximum UV Index today across 37 locations in Loudoun County, Virginia (VA), is 6. The highest projected maximum is 6.4 in Leesburg at 1:00 PM EDT, while the lowest projected maximum is 3.7 in Purcellville at 1:00 PM EDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 4.3. The highest projected maximum is 4.9 in Leesburg at 1:00 PM EDT, and the lowest projected maximum is 2.4 in Purcellville at 12:00 PM EDT.
37 Places in Loudoun County, Virginia (VA)
Maximum UV Index Today