UV Index
UV Index
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Today's UV index in Dayton, United States 
will be up to 4.5, 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 4.5 in Dayton, 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.
Dayton, Ohio experiences a moderate UV index, averaging 4-6 during peak summer months, with the highest levels typically occurring in July. This is slightly lower than the national average, indicating a relatively moderate risk of UV radiation.
Dayton has a humid continental climate, characterized by four distinct seasons. Winters are cold and snowy, with average temperatures around 29°F (-2°C), while summers are warm and humid, with average temperatures around 74°F (23°C). Spring and autumn are mild, with moderate temperatures and precipitation.
Compared to the Midwest region, Dayton's weather is relatively similar, with neighboring cities like Columbus and Indianapolis experiencing similar temperature and precipitation patterns. In contrast, neighboring Canada experiences colder winters, while the southeastern United States generally has milder winters and hotter summers.