UV Index
UV Index
Today's UV index in Washington, D.C., 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 Washington, D.C.'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.
The UV index in Washington, D.C. varies from low in winter to very high in summer, typically reaching its peak in June and July. UV levels are moderate during spring and fall seasons.
Washington, D.C. has four distinct seasons: cold, snowy winters, warm and humid summers, and mild springs and autumns. Rainfall is spread throughout the year, with occasional thunderstorms in summer.
Compared to the wider Mid-Atlantic region, D.C. experiences a similar climate but is slightly warmer than northern parts of Maryland and Virginia. Neighboring cities like Baltimore share similar weather patterns, with some coastal areas having milder winters.
See the UV index hour by hour for Washington, D.C., along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.