UV Index
UV Index
Today's UV index in Hartford, United States 
will be up to 8.1, 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: 2025-07-12
With a UV index of 8.1 in Hartford, 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.
Hartford usually has a UV index ranging from low to moderate, typically between 2 and 6, depending on the season and cloud cover.
In Hartford, summers are warm and sometimes humid, while winters are cold with snowfall. Spring and fall are mild and pleasant, with changing leaf colors in autumn being a highlight.
Compared to nearby cities like Boston or New York, Hartford has slightly colder winters and less humidity in summer. Its weather is typical for the northeastern United States, with distinct seasons and variable precipitation.
See the UV index hour by hour for Hartford, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.