UV Index Today in Frederick County, Maryland (MD)
Sunday, September 20, 2026 -12:23 PM EDT (GMT-4)
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The average maximum UV Index today across 28 locations in Frederick County, Maryland (MD), is 5.4. The highest projected maximum is 5.9 in Urbana at 1:00 PM EDT, while the lowest projected maximum is 3.7 in Brunswick at 1:00 PM EDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 3. The highest projected maximum is 4.7 in Urbana at 1:00 PM EDT, and the lowest projected maximum is 1.5 in Carroll Valley at 2:00 PM EDT.
28 Places in Frederick County, Maryland (MD)
Maximum UV Index Today