Hourly Weather | Today Wednesday, March 18, 2026
South Bend, Indiana
9 AM
Snowy Weather
21°
Feels Like
49
Frost Risk: 98%
Humidity: 82%
UV Index: 0
Wind: 15 mph
10 AM
Cloudy Weather
23°
Feels Like
45
Humidity: 88%
UV Index: 1
Wind: 16 mph
11 AM
Cloudy Weather
25°
Feels Like 10°
42
Humidity: 86%
UV Index: 1
Wind: 16 mph
12 PM
Snowy Weather
27°
Feels Like 10°
46
Humidity: 83%
UV Index: 1
Wind: 17 mph
1 PM
Cloudy Weather
30°
Feels Like 16°
42
Humidity: 79%
UV Index: 1
Wind: 17 mph
2 PM
Cloudy Weather
32°
Feels Like 18°
18
Humidity: 76%
UV Index: 1
Wind: 17 mph
3 PM
Cloudy Weather
36°
Feels Like 21°
18
Humidity: 72%
UV Index: 1
Wind: 16 mph
4 PM
Cloudy Weather
37°
Feels Like 27°
18
Humidity: 68%
UV Index: 1
Wind: 15 mph
5 PM
Cloudy Weather
39°
Feels Like 28°
18
Humidity: 63%
UV Index: 1
Wind: 14 mph
6 PM
Cloudy Weather
37°
Feels Like 30°
18
Humidity: 67%
UV Index: 1
Wind: 12 mph
7 PM
Cloudy Weather
37°
Feels Like 28°
14
Humidity: 72%
UV Index: 0
Wind: 9 mph
8 PM
Cloudy Weather
36°
Feels Like 32°
5
Humidity: 78%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
34°
Feels Like 28°
5
Humidity: 84%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Weather
34°
Feels Like 28°
6
Humidity: 88%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Weather
32°
Feels Like 27°
7
Humidity: 90%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.25 µg/m³
  • PM10: 3.52 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.7 ppb
  • SO2: 1.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.87 µg/m³
  • PM10: 4.23 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.4 ppb
  • SO2: 1.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.26 µg/m³
  • PM10: 4.71 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.8 ppb
  • SO2: 1.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.78 µg/m³
  • PM10: 5.38 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.7 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
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.15 µg/m³
  • PM10: 5.87 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.

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

Pollutant Concentrations:

  • PM2.5: 5.48 µg/m³
  • PM10: 6.26 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.4 ppb
  • SO2: 1.7 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: 6.25 µg/m³
  • PM10: 7.08 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.1 ppb
  • SO2: 1.6 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: 7.32 µg/m³
  • PM10: 8.19 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.8 ppb
  • SO2: 1.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.19 µg/m³
  • PM10: 9.1 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.6 ppb
  • SO2: 1.4 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
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.7 µg/m³
  • PM10: 9.68 µg/m³
  • O3: 0.054 ppm
  • NO2: 2.2 ppb
  • SO2: 1.1 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.

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

Pollutant Concentrations:

  • PM2.5: 8.71 µg/m³
  • PM10: 9.81 µg/m³
  • O3: 0.048 ppm
  • NO2: 4.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.64 µg/m³
  • PM10: 9.88 µg/m³
  • O3: 0.042 ppm
  • NO2: 6.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.56 µg/m³
  • PM10: 9.97 µg/m³
  • O3: 0.038 ppm
  • NO2: 7.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.63 µg/m³
  • PM10: 10.16 µg/m³
  • O3: 0.034 ppm
  • NO2: 7.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.79 µg/m³
  • PM10: 10.38 µg/m³
  • O3: 0.031 ppm
  • NO2: 7.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.21 ppm

Health Recommendations:

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