Hourly Weather | Today Saturday, September 19, 2026
Active Weather Warnings
South Bend, Indiana
3 AM
Cloudy Night
64°
Feels Like 63°
20
Humidity: 80%
UV Index: 0
Wind: 7 mph
4 AM
Cloudy Night
63°
Feels Like 61°
20
Humidity: 83%
UV Index: 0
Wind: 8 mph
5 AM
Cloudy Night
63°
Feels Like 61°
20
Humidity: 85%
UV Index: 0
Wind: 8 mph
6 AM
Cloudy Night
63°
Feels Like 59°
20
Humidity: 87%
UV Index: 0
Wind: 8 mph
7 AM
Cloudy Night
61°
Feels Like 57°
25
Humidity: 89%
UV Index: 0
Wind: 8 mph
8 AM
Cloudy Weather
61°
Feels Like 57°
49
Humidity: 90%
UV Index: 0
Wind: 9 mph
9 AM
Cloudy Weather
63°
Feels Like 59°
49
Humidity: 89%
UV Index: 0
Wind: 9 mph
10 AM
Stormy Weather
63°
Feels Like 57°
65
Humidity: 87%
UV Index: 1
Wind: 9 mph
11 AM
Cloudy Weather
64°
Feels Like 64°
49
Humidity: 86%
UV Index: 1
Wind: 9 mph
12 PM
Stormy Weather
66°
Feels Like 61°
70
Humidity: 85%
UV Index: 1
Wind: 9 mph
1 PM
Stormy Weather
68°
Feels Like 63°
70
Humidity: 86%
UV Index: 1
Wind: 8 mph
2 PM
Cloudy Weather
68°
Feels Like 70°
49
Humidity: 87%
UV Index: 1
Wind: 8 mph
3 PM
Rainy Weather
70°
Feels Like 66°
65
Humidity: 86%
UV Index: 1
Wind: 8 mph
4 PM
Cloudy Weather
72°
Feels Like 72°
49
Humidity: 85%
UV Index: 1
Wind: 8 mph
5 PM
Cloudy Weather
72°
Feels Like 72°
49
Humidity: 86%
UV Index: 1
Wind: 7 mph
6 PM
Rainy Weather
72°
Feels Like 70°
74
Humidity: 85%
UV Index: 0
Wind: 7 mph
7 PM
Rainy Weather
72°
Feels Like 68°
74
Humidity: 90%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Weather
70°
Feels Like 72°
49
Humidity: 93%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
70°
Feels Like 70°
49
Humidity: 96%
UV Index: 0
Wind: 6 mph
10 PM
Rainy Weather
70°
Feels Like 66°
64
Humidity: 97%
UV Index: 0
Wind: 7 mph
11 PM
Rainy Weather
70°
Feels Like 66°
65
Humidity: 96%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.23 µg/m³
  • PM10: 7.01 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

4 AM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.88 µg/m³
  • PM10: 6.62 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

5 AM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.71 µg/m³
  • PM10: 6.42 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.72 µg/m³
  • PM10: 6.42 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.89 µg/m³
  • PM10: 6.61 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.22 µg/m³
  • PM10: 6.96 µg/m³
  • O3: 0.026 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.59 µg/m³
  • PM10: 7.31 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.19 µg/m³
  • PM10: 7.86 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.27 µg/m³
  • PM10: 8.88 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.95 µg/m³
  • PM10: 10.49 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 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: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.55 µg/m³
  • PM10: 11.99 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.84 µg/m³
  • PM10: 13.18 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.1 ppb
  • SO2: 0.7 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.

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

Pollutant Concentrations:

  • PM2.5: 13.27 µg/m³
  • PM10: 13.57 µg/m³
  • O3: 0.042 ppm
  • NO2: 1 ppb
  • SO2: 0.6 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.

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

Pollutant Concentrations:

  • PM2.5: 12.54 µg/m³
  • PM10: 12.81 µg/m³
  • O3: 0.044 ppm
  • NO2: 1 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 11.22 µg/m³
  • PM10: 11.46 µg/m³
  • O3: 0.045 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.53 µg/m³
  • PM10: 10.75 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.21 µg/m³
  • PM10: 11.46 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.8 µg/m³
  • PM10: 13.11 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.9 ppb
  • SO2: 0.5 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 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.83 µg/m³
  • PM10: 15.21 µg/m³
  • O3: 0.041 ppm
  • NO2: 2 ppb
  • SO2: 0.5 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 PM
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.64 µg/m³
  • PM10: 17.08 µg/m³
  • O3: 0.039 ppm
  • NO2: 2 ppb
  • SO2: 0.5 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 PM
62 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.68 µg/m³
  • PM10: 18.15 µg/m³
  • O3: 0.037 ppm
  • NO2: 2 ppb
  • SO2: 0.5 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.

Weather Alerts and Warnings for South Bend

Severe Future Possible

Flood Watch

Flood Watch issued September 18 at 9:06PM EDT until September 20 at 8:00AM EDT by NWS Northern Indiana
Sep 19, 2:00 AM Sep 20, 8:00 AM
WHAT: Flash flooding caused by excessive rainfall continues to be
possible.

WHERE: Portions of northern Indiana, including the following
areas, Adams, Allen IN, Blackford, De Kalb, Eastern St. Joseph IN,
Elkhart, Fulton IN, Grant, Huntington, Jay, Lagrange, Marshall,
Miami, Noble, Northern Kosciusko, Northern La Porte, Southern
Kosciusko, Southern La Porte, Starke, Steuben, Wabash, Wells,
Western St. Joseph IN and Whitley, southwest Michigan, including
the following areas, Branch, Cass MI, Northern Berrien, Southern
Berrien and St. Joseph MI, and northwest Ohio, including the
following areas, Paulding and Van Wert.

WHEN: From 2 AM EDT /1 AM CDT/ Saturday through Sunday morning.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas. Low-water crossings may be
flooded.

ADDITIONAL DETAILS:
- 1 to 2 inches of rain is likely area-wide, with locally higher
amounts of up to 3 inches possible mainly along and north of
I-80/I-90.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Updated: Sep 19, 1:40 AM Source: NWS Alert