UV Index
UV Index
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Today's UV index in Washington, United States 
will be up to 3.7, indicating a moderate level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With a UV index reaching up to 3.7 in Washington, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Washington, D.C.'s UV index is moderate, with an average daily high of 6.5, making it essential to be mindful of exposure, especially during peak hours. The city's proximity to the equator contributes to its relatively high UV levels.
Washington, D.C. experiences a humid subtropical climate, with four distinct seasons. Summers are hot and humid, while winters are cold and snowy. Spring and autumn bring mild temperatures, making them ideal for outdoor activities. The region's climate is influenced by its proximity to the Atlantic Ocean.
Compared to neighboring cities, Washington, D.C.'s climate is similar to Baltimore and Philadelphia, but milder than the Appalachian region. In contrast, the city's climate is more humid than neighboring states, such as Virginia and Maryland. Internationally, Washington, D.C.'s climate is similar to that of Tokyo, Japan, and Shanghai, China.