Today | Weather | Wednesday, December 31, 2025

Weather in Louisville, Kentucky

04:16 PM
Now
Cloudy Weather
37° F
Feels Like 30°
Precipitation 0 %
Wind 12 mph
UV Index (0 - 11+) 1
Humidity 70 %
Today
Cloudy Weather
Day 39°
Night 32°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 1

Louisville Weather Forecast Updated

30 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 31, 2024)
Stormy Weather

Day

54°

Night

36°

Wind

17 mph

UV Index

1

Precipitation

98 %

Air Quality in Louisville

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

Pollutant Concentrations:

PM2.5 7.83 µg/m³
PM10 9.59 µg/m³
O3 0.035 ppm
NO2 3.4 ppb
SO2 2.3 ppb
CO 0.15 ppm
NH3 0.66 µg/m³
NO 1.09 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.57.83 µg/m³
PM109.59 µg/m³
O368.52 µg/m³
NO26.41 µg/m³
SO26.03 µg/m³
CO173.25 µg/m³
NH30.66 µg/m³
NO1.09 µg/m³