Hourly Weather | Today Tuesday, July 21, 2026
Indianapolis, Indiana
4 AM
Stormy Weather
75°
Feels Like 77°
45
Humidity: 83%
UV Index: 0
Wind: 6 mph
5 AM
Cloudy Night
75°
Feels Like 79°
43
Humidity: 84%
UV Index: 0
Wind: 7 mph
6 AM
Stormy Weather
75°
Feels Like 75°
51
Humidity: 87%
UV Index: 0
Wind: 7 mph
7 AM
Cloudy Weather
73°
Feels Like 79°
47
Humidity: 92%
UV Index: 0
Wind: 7 mph
8 AM
Sunny with a Chance of Thunderstorms
73°
Feels Like 75°
75
Humidity: 93%
UV Index: 1
Wind: 7 mph
9 AM
Sunny with a Chance of Thunderstorms
75°
Feels Like 79°
75
Humidity: 93%
UV Index: 1
Wind: 8 mph
10 AM
Cloudy Weather
77°
Feels Like 84°
49
Humidity: 89%
UV Index: 2
Wind: 8 mph
11 AM
Cloudy Weather
79°
Feels Like 86°
34
Humidity: 85%
UV Index: 3
Wind: 9 mph
12 PM
Cloudy Weather
81°
Feels Like 90°
34
Humidity: 79%
UV Index: 4
Wind: 10 mph
1 PM
Cloudy Weather
82°
Feels Like 91°
40
Humidity: 71%
UV Index: 5
Wind: 12 mph
2 PM
Partly Sunny with Showers
84°
Feels Like 90°
51
Humidity: 66%
UV Index: 4
Wind: 13 mph
3 PM
Cloudy Weather
88°
Feels Like 93°
47
Humidity: 59%
UV Index: 4
Wind: 13 mph
4 PM
Cloudy Weather
88°
Feels Like 91°
40
Humidity: 55%
UV Index: 3
Wind: 13 mph
5 PM
Cloudy Weather
90°
Feels Like 91°
34
Humidity: 51%
UV Index: 2
Wind: 13 mph
6 PM
Cloudy Weather
88°
Feels Like 88°
34
Humidity: 54%
UV Index: 2
Wind: 13 mph
7 PM
Cloudy Weather
84°
Feels Like 86°
22
Humidity: 58%
UV Index: 1
Wind: 12 mph
8 PM
Cloudy Weather
82°
Feels Like 82°
0
Humidity: 63%
UV Index: 0
Wind: 12 mph
9 PM
Cloudy Weather
81°
Feels Like 81°
0
Humidity: 67%
UV Index: 0
Wind: 9 mph
10 PM
Cloudy Night
77°
Feels Like 79°
0
Humidity: 74%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
75°
Feels Like 75°
0
Humidity: 79%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 16.94 µg/m³
  • PM10: 17.59 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.93 µg/m³
  • PM10: 16.58 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.5 ppb
  • SO2: 0.8 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.

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

Pollutant Concentrations:

  • PM2.5: 14.12 µg/m³
  • PM10: 14.69 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.5 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.

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

Pollutant Concentrations:

  • PM2.5: 12.72 µg/m³
  • PM10: 13.19 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.6 ppb
  • SO2: 0.9 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
49 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.7 µg/m³
  • PM10: 12.12 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.66 µg/m³
  • PM10: 11 µg/m³
  • O3: 0.021 ppm
  • NO2: 2.2 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.56 µg/m³
  • PM10: 9.82 µg/m³
  • O3: 0.020 ppm
  • NO2: 2.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.51 µg/m³
  • PM10: 8.71 µg/m³
  • O3: 0.019 ppm
  • NO2: 2.2 ppb
  • SO2: 1.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

12 PM
30 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.18 µg/m³
  • PM10: 7.37 µg/m³
  • O3: 0.023 ppm
  • NO2: 2 ppb
  • SO2: 1.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

1 PM
29 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.87 µg/m³
  • PM10: 7.09 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.7 ppb
  • SO2: 1.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

2 PM
30 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.08 µg/m³
  • PM10: 7.35 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.5 ppb
  • SO2: 1.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

3 PM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.78 µg/m³
  • PM10: 8.05 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.2 ppb
  • SO2: 1.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

4 PM
36 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.72 µg/m³
  • PM10: 8.98 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.1 ppb
  • SO2: 1.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

5 PM
40 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.48 µg/m³
  • PM10: 9.71 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.1 ppb
  • SO2: 1.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

6 PM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.73 µg/m³
  • PM10: 9.95 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.1 ppb
  • SO2: 1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

7 PM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.79 µg/m³
  • PM10: 10.02 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.2 ppb
  • SO2: 1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

8 PM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.72 µg/m³
  • PM10: 9.97 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.3 ppb
  • SO2: 1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

9 PM
40 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.57 µg/m³
  • PM10: 9.84 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

10 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.18 µg/m³
  • PM10: 9.45 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 PM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.49 µg/m³
  • PM10: 8.74 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.11 ppm

Health Recommendations:

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