UV Index Today in Middlesex County, Massachusetts (MA)
Sunday, September 20, 2026 -12:23 PM EDT (GMT-4)
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The average maximum UV Index today across 90 locations in Middlesex County, Massachusetts (MA), is 0.8. The highest projected maximum is 1.2 in Boston at 9:00 AM EDT, while the lowest projected maximum is 0.6 in Nashua at 12:00 PM EDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 5.6. The highest projected maximum is 5.7 in Fitchburg at 1:00 PM EDT, and the lowest projected maximum is 5.3 in Boston at 1:00 PM EDT.
41 County Subdivisions in Middlesex County, Massachusetts (MA)
Maximum UV Index Today
49 Places in Middlesex County, Massachusetts (MA)
Maximum UV Index Today