UV Index
UV Index
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Today's UV index in Baltimore, United States 
will be up to 3.4, 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 3.4 in Baltimore, 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.
The UV index in Baltimore can reach high levels during the summer, with values often exceeding 9 on a scale of 11+. This indicates a significant risk of sunburn and skin damage for those not adequately protected.
Baltimore experiences four distinct seasons. Winters are cold and snowy, while spring brings mild temperatures and blooming flowers. Summers are hot and humid, with temperatures sometimes exceeding 90°F (32°C). Fall offers crisp, cool weather and vibrant foliage.
Compared to its region and neighboring countries, Baltimore's weather is relatively mild. While it shares the same general seasonal patterns as much of the United States, its location near the Chesapeake Bay tempers extremes, resulting in less severe winters and hotter summers than experienced inland.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Baltimore. It's designed to provide you with a better understanding of the yearly weather and sun exposure.