UV Index
UV Index
Today's UV index in Baltimore, United States 
will be up to 7.8, indicating a 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: 2025-05-10
With Baltimore's UV index reaching 7.8, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.
Baltimore's UV index varies from low in winter to high in summer, peaking around 7 to 8 during sunny days in June and July. UV levels are moderate during spring and fall.
Seasons in Baltimore are distinct: warm, humid summers; cold winters with occasional snow; mild springs with blooming trees; and colorful, crisp falls. Rain is spread fairly evenly through the year.
Compared to nearby cities like Washington, D.C., Baltimore experiences similar weather but slightly cooler winters. Its climate is more humid and warmer than inland states like Pennsylvania but cooler than southern states like Virginia.
See the UV index hour by hour for Baltimore, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.