UV index today  UV Index

Louisville UV Index Today

Day Summary

The UV index in Louisville, United States Flag of United States will reach a high of 6.5 today. This means a high level of sun exposure. See our tips below to stay safe!

Last checked: 2025-09-12

Hourly Forecast Chart

Today's Safety Tips

Be careful! The sun's rays are strong. Try to stay in the shade between 10 a.m. and 4 p.m. Wear a hat, sunglasses, and reapply SPF 30+ sunscreen every 2 hours.

Louisville's UV Index

Louisville's UV index varies throughout the year, typically ranging from low to moderate in winter and spring, increasing to high levels in summer months, and then decreasing again in autumn. The UV index peaks in June and July when the sun is strongest.

Weather Seasons

UV index

Louisville experiences four distinct seasons: cold winters with occasional snow, warm and humid summers, mild springs with blooming plants, and cool autumns with colorful leaves. Rainfall is spread fairly evenly, with spring and summer often seeing thunderstorms.

Louisville's Climate

Compared to the wider Midwest region, Louisville has milder winters and more humidity. Neighboring states like Indiana and Kentucky share similar weather patterns, but Louisville tends to have slightly warmer temperatures and more rain than areas farther north or west.

Hourly UV Index Trend

See the UV index hour by hour for Louisville. When the level is high, it's smart to find some shade.

Disclaimer

* The information on this page about the UV index in Louisville is for educational purposes only. It is not a substitute for professional medical advice. Always consult a doctor for any health concerns.