Hourly Weather | Today Wednesday, March 18, 2026
Indianapolis, Indiana
6 AM
Snowy Weather
27°
Feels Like 14°
46
Humidity: 62%
UV Index: 0
Wind: 10 mph
7 AM
Cloudy Weather
27°
Feels Like 16°
38
Humidity: 64%
UV Index: 0
Wind: 12 mph
8 AM
Snowy Weather
25°
Feels Like 12°
55
Humidity: 73%
UV Index: 0
Wind: 12 mph
9 AM
Snowy Weather
25°
Feels Like 12°
55
Humidity: 75%
UV Index: 0
Wind: 12 mph
10 AM
Cloudy Weather
27°
Feels Like 16°
40
Humidity: 74%
UV Index: 1
Wind: 13 mph
11 AM
Snowy Weather
28°
Feels Like 18°
51
Humidity: 73%
UV Index: 1
Wind: 13 mph
12 PM
Cloudy Weather
32°
Feels Like 21°
44
Humidity: 71%
UV Index: 1
Wind: 13 mph
1 PM
Cloudy Weather
34°
Feels Like 25°
31
Humidity: 67%
UV Index: 2
Wind: 13 mph
2 PM
Cloudy Weather
37°
Feels Like 30°
20
Humidity: 63%
UV Index: 3
Wind: 13 mph
3 PM
Cloudy Weather
39°
Feels Like 36°
20
Humidity: 59%
UV Index: 3
Wind: 13 mph
4 PM
Cloudy Weather
43°
Feels Like 37°
20
Humidity: 56%
UV Index: 3
Wind: 13 mph
5 PM
Cloudy Weather
45°
Feels Like 37°
20
Humidity: 56%
UV Index: 2
Wind: 12 mph
6 PM
Cloudy Weather
46°
Feels Like 39°
20
Humidity: 55%
UV Index: 1
Wind: 10 mph
7 PM
Cloudy Weather
45°
Feels Like 37°
13
Humidity: 61%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Weather
43°
Feels Like 37°
0
Humidity: 69%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Weather
39°
Feels Like 36°
0
Humidity: 74%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
37°
Feels Like 34°
0
Humidity: 78%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 81%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.86 µg/m³
  • PM10: 6.08 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.3 ppb
  • SO2: 3.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

7 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 6.17 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.3 ppb
  • SO2: 3.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.21 µg/m³
  • PM10: 6.02 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.3 ppb
  • SO2: 3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.97 µg/m³
  • PM10: 5.69 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.3 ppb
  • SO2: 2.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

10 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.49 µg/m³
  • PM10: 5.19 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.6 ppb
  • SO2: 2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

11 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.03 µg/m³
  • PM10: 4.77 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.6 ppb
  • SO2: 1.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.71 µg/m³
  • PM10: 4.55 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.5 ppb
  • SO2: 1.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.65 µg/m³
  • PM10: 4.62 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.3 ppb
  • SO2: 1.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.96 µg/m³
  • PM10: 5.05 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.2 ppb
  • SO2: 2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.68 µg/m³
  • PM10: 5.84 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.1 ppb
  • SO2: 2.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.32 µg/m³
  • PM10: 6.46 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.8 ppb
  • SO2: 2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

5 PM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.55 µg/m³
  • PM10: 6.6 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.7 ppb
  • SO2: 1.9 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.

6 PM
53 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.47 µg/m³
  • PM10: 6.45 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.8 ppb
  • SO2: 1.8 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 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.04 µg/m³
  • PM10: 6.02 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.4 ppb
  • SO2: 1.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.91 µg/m³
  • PM10: 5.93 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.9 ppb
  • SO2: 1.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.93 µg/m³
  • PM10: 5.99 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.9 ppb
  • SO2: 1.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.09 µg/m³
  • PM10: 6.22 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.8 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.35 µg/m³
  • PM10: 6.56 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.16 ppm

Health Recommendations:

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