Today | Weather | Sunday, September 6, 2026

Weather in Louisville, Kentucky

07:05 AM
Now
Cloudy Night
75° F
Feels Like 77°
Precipitation 13 %
Wind 7 mph
Humidity 80 %
Today
Cloudy Weather
Day 88°
Night 61°
Precipitation 2 %
Wind 8 mph
UV Index (0 - 11+) 7

Louisville Weather Forecast Updated

32 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 6, 2025)
Night

Day

72°

Night

52°

Wind

5 mph

Precipitation

0 %

Air Quality in Louisville

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

Pollutant Concentrations:

PM2.5 8.06 µg/m³
PM10 9.55 µg/m³
O3 0.006 ppm
NO2 1.6 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 0.99 µg/m³
NO 0.02 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)
PM2.58.06 µg/m³
PM109.55 µg/m³
O311.3 µg/m³
NO23.02 µg/m³
SO20.17 µg/m³
CO122.97 µg/m³
NH30.99 µg/m³
NO0.02 µg/m³