Hourly Weather | Today Sunday, October 12, 2025
Louisville, Kentucky
1 AM
Cloudy Night
55°
Feels Like 55°
0
Humidity: 91%
Wind: 5 mph
UV Index: 0
2 AM
Cloudy Night
55°
Feels Like 54°
0
Humidity: 92%
Wind: 5 mph
UV Index: 0
3 AM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 92%
Wind: 5 mph
UV Index: 0
4 AM
Cloudy Night
54°
Feels Like 52°
0
Humidity: 91%
Wind: 5 mph
UV Index: 0
5 AM
Cloudy Night
52°
Feels Like 52°
0
Humidity: 90%
Wind: 5 mph
UV Index: 0
6 AM
Cloudy Night
52°
Feels Like 50°
0
Humidity: 91%
Wind: 5 mph
UV Index: 0
7 AM
Cloudy Night
50°
Feels Like 50°
0
Humidity: 92%
Wind: 5 mph
UV Index: 0
8 AM
Sunny Weather
48°
Feels Like 48°
0
Humidity: 94%
Wind: 5 mph
UV Index: 5
9 AM
Sunny Weather
52°
Feels Like 54°
0
Humidity: 91%
Wind: 5 mph
UV Index: 14
10 AM
Sunny Weather
57°
Feels Like 61°
0
Humidity: 82%
Wind: 5 mph
UV Index: 23
11 AM
Sunny Weather
61°
Feels Like 66°
0
Humidity: 74%
Wind: 6 mph
UV Index: 32
12 PM
Sunny Weather
64°
Feels Like 72°
0
Humidity: 67%
Wind: 6 mph
UV Index: 39
1 PM
Sunny Weather
66°
Feels Like 72°
0
Humidity: 59%
Wind: 6 mph
UV Index: 42
2 PM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 53%
Wind: 6 mph
UV Index: 39
3 PM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 50%
Wind: 6 mph
UV Index: 32
4 PM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 48%
Wind: 7 mph
UV Index: 23
5 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 51%
Wind: 7 mph
UV Index: 14
6 PM
Cloudy Weather
70°
Feels Like 68°
0
Humidity: 54%
Wind: 7 mph
UV Index: 5
7 PM
Cloudy Weather
66°
Feels Like 64°
0
Humidity: 59%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 68%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 75%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 82%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 87%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.95 µg/m³
  • PM10: 14.01 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 AM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.13 µg/m³
  • PM10: 14.23 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.58 µg/m³
  • PM10: 14.8 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 AM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.41 µg/m³
  • PM10: 15.79 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 AM
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.47 µg/m³
  • PM10: 17.03 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 AM
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.49 µg/m³
  • PM10: 18.19 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 AM
62 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.42 µg/m³
  • PM10: 19.21 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 AM
63 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.12 µg/m³
  • PM10: 19.95 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 AM
64 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.32 µg/m³
  • PM10: 20.13 µg/m³
  • O3: 0.022 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 AM
63 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.16 µg/m³
  • PM10: 19.93 µg/m³
  • O3: 0.022 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 AM
63 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.99 µg/m³
  • PM10: 19.72 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

12 PM
64 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.39 µg/m³
  • PM10: 20.03 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

1 PM
65 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.96 µg/m³
  • PM10: 20.52 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.8 ppb
  • SO2: 0.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM
66 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 19.41 µg/m³
  • PM10: 20.88 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.7 ppb
  • SO2: 1 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.78 µg/m³
  • PM10: 17.93 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.5 ppb
  • SO2: 1.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.46 µg/m³
  • PM10: 15.39 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.4 ppb
  • SO2: 1 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.93 µg/m³
  • PM10: 14.81 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.4 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.11 µg/m³
  • PM10: 14.98 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.52 µg/m³
  • PM10: 15.41 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.79 µg/m³
  • PM10: 15.7 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.8 µg/m³
  • PM10: 15.72 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.93 µg/m³
  • PM10: 15.87 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.99 µg/m³
  • PM10: 15.97 µg/m³
  • O3: 0.033 ppm
  • NO2: 2.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.