Hourly Weather | Today Sunday, September 6, 2026
Louisville, Kentucky
8 AM
Cloudy Weather
73°
Feels Like 79°
0
Humidity: 85%
UV Index: 1
Wind: 7 mph
9 AM
Cloudy Weather
75°
Feels Like 81°
0
Humidity: 86%
UV Index: 2
Wind: 7 mph
10 AM
Cloudy Weather
75°
Feels Like 82°
0
Humidity: 82%
UV Index: 4
Wind: 8 mph
11 AM
Cloudy Weather
77°
Feels Like 84°
0
Humidity: 79%
UV Index: 5
Wind: 8 mph
12 PM
Cloudy Weather
79°
Feels Like 88°
0
Humidity: 70%
UV Index: 6
Wind: 9 mph
1 PM
Cloudy Weather
82°
Feels Like 90°
0
Humidity: 62%
UV Index: 7
Wind: 9 mph
2 PM
Cloudy Weather
84°
Feels Like 90°
0
Humidity: 56%
UV Index: 6
Wind: 9 mph
3 PM
Cloudy Weather
86°
Feels Like 90°
0
Humidity: 51%
UV Index: 5
Wind: 9 mph
4 PM
Cloudy Weather
88°
Feels Like 90°
0
Humidity: 46%
UV Index: 4
Wind: 9 mph
5 PM
Cloudy Weather
86°
Feels Like 88°
0
Humidity: 46%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 45%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
82°
Feels Like 81°
0
Humidity: 47%
UV Index: 0
Wind: 9 mph
8 PM
Cloudy Weather
81°
Feels Like 79°
0
Humidity: 52%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Night
77°
Feels Like 75°
0
Humidity: 57%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
75°
Feels Like 72°
0
Humidity: 62%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
73°
Feels Like 70°
0
Humidity: 66%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.79 µg/m³
  • PM10: 8.95 µg/m³
  • O3: 0.007 ppm
  • NO2: 1.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

9 AM
30 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.24 µg/m³
  • PM10: 7.88 µg/m³
  • O3: 0.017 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

10 AM
29 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.01 µg/m³
  • PM10: 7.53 µg/m³
  • O3: 0.017 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

11 AM
29 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.91 µg/m³
  • PM10: 7.4 µg/m³
  • O3: 0.017 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

12 PM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.54 µg/m³
  • PM10: 6.9 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

1 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.19 µg/m³
  • PM10: 6.46 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

2 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.07 µg/m³
  • PM10: 6.31 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.42 µg/m³
  • PM10: 5.67 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 PM
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.9 µg/m³
  • PM10: 5.17 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

5 PM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.96 µg/m³
  • PM10: 5.28 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

6 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.14 µg/m³
  • PM10: 5.53 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

7 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.25 µg/m³
  • PM10: 5.71 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

8 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.26 µg/m³
  • PM10: 5.78 µg/m³
  • O3: 0.049 ppm
  • NO2: 1 ppb
  • SO2: 0.7 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

9 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.31 µg/m³
  • PM10: 5.88 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

10 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.57 µg/m³
  • PM10: 6.19 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

11 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.79 µg/m³
  • PM10: 6.45 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.1 ppb
  • SO2: 1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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