UV Index
UV Index
Today's UV index in Madison, United States 
will be up to 9.8, 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: 2025-06-21
With a UV index of 9.8 in Madison, 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.
Madison has a UV index that varies throughout the year, reaching its highest during summer months, typically between 7 and 9, indicating strong sun exposure. In winter, the UV index drops significantly, often below 2.
Seasonally, Madison experiences cold, snowy winters with temperatures often below freezing, warm and humid summers reaching the 80s to low 90s Fahrenheit, and mild springs and falls with moderate rainfall. Snow is common from late November to early March.
Compared to the wider Midwest, Madison has colder winters and more snowfall due to its northern location. It is cooler and receives more precipitation than nearby southern states like Illinois but is similar in climate to other cities in Wisconsin and northern Minnesota.
See the UV index hour by hour for Madison, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.