UV Index
UV Index
Today's UV index in Trenton, United States 
will be up to 8, indicating a very high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-07-21
With a UV index of 8 in Trenton, it's crucial to safeguard your skin from harmful UV rays. Protect yourself by minimizing sun exposure, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours.
The UV index in Trenton typically ranges from low to moderate, generally staying between 1 and 6 throughout the year, with higher values during summer months.
Trenton experiences four distinct seasons: cold winters with snow, warm and humid summers, mild springs with blooming flowers, and cool, colorful autumns. Precipitation is fairly evenly spread across the year.
Compared to nearby cities like Philadelphia and New York City, Trenton has similar weather patterns but slightly less rainfall. It gets colder winters than southern states and warmer summers than northern states in the region.
See the UV index hour by hour for Trenton, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.