Today | Weather | Saturday, September 26, 2026

Weather in Louisville, Kentucky

11:23 AM
Now
Cloudy Weather
66° F
Feels Like 70°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 4
Humidity 58 %
Today
Cloudy Weather
Day 75°
Night 48°
Precipitation 3 %
Wind 6 mph
UV Index (0 - 11+) 5

Louisville Weather Forecast Updated

3 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 26, 2025)
Night

Day

82°

Night

55°

Wind

4 mph

Precipitation

1 %

Air Quality in Louisville

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

Pollutant Concentrations:

PM2.5 7.12 µg/m³
PM10 8.2 µg/m³
O3 0.024 ppm
NO2 2.3 ppb
SO2 0.4 ppb
CO 0.15 ppm
NH3 1.95 µg/m³
NO 0.67 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)
PM2.5 – 7.12 µg/m³
PM10 – 8.2 µg/m³
O3 – 46.38 µg/m³
NO2 – 4.25 µg/m³
SO2 – 1.12 µg/m³
CO – 167.56 µg/m³
NH3 – 1.95 µg/m³
NO – 0.67 µg/m³