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UV Index in Louisville, US

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Today's UV index in Louisville, United States United States will be up to 4.1, indicating moderate risk of harm from the sun's UV rays for the average person. Check our tips for today to make sure you're safe in the sun.

 

Today's tips

With a UV index reaching up to 4.1 in Louisville, 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.

Louisville Weather

Read more here about the climate and sun exposure in and around Louisville.

UV Index in Louisville

The UV index in Louisville typically ranges from moderate to high throughout the year. During the summer months, the index can reach very high levels, often exceeding 8-10 (on a scale of 0-11+). This means that it is essential to protect your skin from the sun's harmful rays by wearing sunscreen, sunglasses, and protective clothing.

Weather Seasons

UV index

Louisville experiences four distinct seasons: spring, summer, fall, and winter. Spring and fall tend to be mild with temperatures ranging from 10-20 °C (50-68 °F), while summer is hot and humid with temperatures averaging around 30 °C (86 °F) and can sometimes exceed 35 °C (95 °F). Winter brings colder temperatures ranging from -5 to 5 °C (23 to 41 °F), with occasional snowfall.

Louisville's Climate

Compared to its region, Louisville generally has a relatively higher sun exposure due to its location in the Ohio Valley. However, compared to states located nearer to the equator, the sun's intensity is lower. Nevertheless, it is still important to take precautions against sunburn and skin damage, especially during the summer months when the sun is at its strongest.

Annual Sun Radiation

The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Louisville. It's designed to provide you with a better understanding of the yearly weather and sun exposure.

Disclaimer

* This page's content about the UV index in Louisville (United States) is for educational and informational purposes only. The developers and data providers are not liable for the accuracy, reliability, or availability of the information. The information is not a substitute for professional medical advice, and the developers and data providers are not medical professionals. Seek advice from a qualified health provider for any medical concerns, and do not disregard medical advice or delay seeking it based on the information provided on this site.