UV Index
UV Index
Today's UV index in Jacksonville, United States 
will be up to 10.5, 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: 2025-05-21
With a UV index of 10.5 in Jacksonville, 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.
Jacksonville's UV index varies from low in winter to very high in summer, often reaching 8 or 9 on sunny days, indicating strong sunlight exposure during peak months. The city experiences hot, humid summers with frequent afternoon thunderstorms and mild, drier winters. Compared to other southeastern U.S. cities, Jacksonville has a slightly higher humidity and more sun, but its weather is less extreme than in Florida's southern regions or Gulf Coast areas.
See the UV index hour by hour for Jacksonville, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.