UV Index Today in Mercer County, New Jersey (NJ)

The average maximum UV Index today across 30 locations in Mercer County, New Jersey (NJ), is 3.2. The highest projected maximum is 3.2 in Hamilton at 12:00 PM EST, while the lowest projected maximum is 3.2 in Hamilton at 12:00 PM EST.

Tomorrow, the average maximum UV Index across those same locations is expected to be 1.3. The highest projected maximum is 2 in Titusville at 12:00 PM EST, and the lowest projected maximum is 0.8 in East Windsor at 11:00 AM EST.