Today | Weather | Monday, September 1, 2025

Weather in Louisville, Kentucky

05:26 AM
Now
Cloudy WeatherCloudy weather, overcast skies with no rain.
55° F
Feels Like 55°
Precipitation 0 %
Wind 5 mph
Humidity 89 %
Today
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 84°
Night 57°
Precipitation 1 %
Wind 6 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Louisville Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (September 1, 2024)

Cloudy WeatherCloudy weather, overcast skies with clouds.

Day

90°

Night

64°

Wind

4 mph

UV Index

7

Precipitation

25

Air quality in Louisville

NOW
44 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 5.61 µg/m³
PM10 9.12 µg/m³
O₃ 31.44 ppb
NO₂ 5.78 ppb
SO₂ 2.11 ppb
CO 173.57 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors