Hourly Weather | Today Tuesday, August 25, 2026
Sioux Falls, South Dakota
8 AM
Sunny with a Chance of Thunderstorms
66°
Feels Like 64°
51
Humidity: 85%
UV Index: 2
Wind: 6 mph
9 AM
Cloudy Weather
70°
Feels Like 72°
47
Humidity: 81%
UV Index: 2
Wind: 6 mph
10 AM
Cloudy Weather
73°
Feels Like 79°
40
Humidity: 72%
UV Index: 4
Wind: 6 mph
11 AM
Cloudy Weather
77°
Feels Like 82°
34
Humidity: 64%
UV Index: 5
Wind: 7 mph
12 PM
Cloudy Weather
81°
Feels Like 88°
34
Humidity: 57%
UV Index: 6
Wind: 7 mph
1 PM
Cloudy Weather
84°
Feels Like 90°
34
Humidity: 49%
UV Index: 7
Wind: 8 mph
2 PM
Cloudy Weather
88°
Feels Like 91°
34
Humidity: 43%
UV Index: 6
Wind: 9 mph
3 PM
Cloudy Weather
88°
Feels Like 90°
34
Humidity: 39%
UV Index: 5
Wind: 10 mph
4 PM
Cloudy Weather
90°
Feels Like 90°
37
Humidity: 35%
UV Index: 4
Wind: 12 mph
5 PM
Cloudy Weather
88°
Feels Like 88°
43
Humidity: 35%
UV Index: 2
Wind: 12 mph
6 PM
Cloudy Weather
88°
Feels Like 84°
47
Humidity: 36%
UV Index: 2
Wind: 12 mph
7 PM
Sunny with a Chance of Thunderstorms
82°
Feels Like 77°
51
Humidity: 42%
UV Index: 1
Wind: 12 mph
8 PM
Cloudy Weather
81°
Feels Like 77°
6
Humidity: 46%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Night
77°
Feels Like 73°
3
Humidity: 52%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
73°
Feels Like 72°
3
Humidity: 57%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
72°
Feels Like 68°
3
Humidity: 62%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 6.05 µg/m³
  • PM10: 6.31 µg/m³
  • O3: 0.012 ppm
  • NO2: 1.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.19 µg/m³
  • PM10: 6.43 µg/m³
  • O3: 0.011 ppm
  • NO2: 1.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.36 µg/m³
  • PM10: 6.6 µg/m³
  • O3: 0.013 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.43 µg/m³
  • PM10: 6.65 µg/m³
  • O3: 0.019 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.45 µg/m³
  • PM10: 6.69 µg/m³
  • O3: 0.022 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.47 µg/m³
  • PM10: 6.72 µg/m³
  • O3: 0.024 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.11 µg/m³
  • PM10: 6.34 µg/m³
  • O3: 0.027 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.01 µg/m³
  • PM10: 6.24 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.94 µg/m³
  • PM10: 6.16 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

5 PM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.43 µg/m³
  • PM10: 5.68 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.13 µg/m³
  • PM10: 5.42 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.84 µg/m³
  • PM10: 5.18 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.58 µg/m³
  • PM10: 4.97 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.39 µg/m³
  • PM10: 4.82 µg/m³
  • O3: 0.025 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.17 µg/m³
  • PM10: 4.65 µg/m³
  • O3: 0.024 ppm
  • NO2: 1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.9 µg/m³
  • PM10: 4.41 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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