Hourly Weather | Today Wednesday, January 7, 2026
Sioux City, Iowa
1 AM
Cloudy Night
28°
Feels Like 25°
0
Humidity: 95%
Wind: 6 mph
UV Index: 0
2 AM
Cloudy Night
27°
Feels Like 23°
0
Humidity: 96%
Wind: 6 mph
UV Index: 0
3 AM
Cloudy Night
27°
Feels Like 21°
0
Humidity: 97%
Wind: 7 mph
UV Index: 0
4 AM
Cloudy Night
27°
Feels Like 21°
0
Humidity: 99%
Wind: 7 mph
UV Index: 0
5 AM
Cloudy Night
27°
Feels Like 19°
0
Humidity: 100%
Wind: 7 mph
UV Index: 0
6 AM
Cloudy Night
27°
Feels Like 19°
0
Humidity: 100%
Wind: 7 mph
UV Index: 0
7 AM
Night
25°
Feels Like 19°
0
Humidity: 100%
Wind: 7 mph
UV Index: 0
8 AM
Sunny Weather
25°
Feels Like 19°
0
Humidity: 100%
Wind: 7 mph
UV Index: 0
9 AM
Sunny Weather
27°
Feels Like 25°
0
Humidity: 97%
Wind: 7 mph
UV Index: 1
10 AM
Sunny Weather
32°
Feels Like 30°
0
Humidity: 79%
Wind: 7 mph
UV Index: 2
11 AM
Sunny Weather
39°
Feels Like 39°
0
Humidity: 61%
Wind: 7 mph
UV Index: 2
12 PM
Sunny Weather
46°
Feels Like 46°
0
Humidity: 48%
Wind: 7 mph
UV Index: 2
1 PM
Sunny Weather
48°
Feels Like 48°
0
Humidity: 45%
Wind: 7 mph
UV Index: 2
2 PM
Cloudy Weather
52°
Feels Like 52°
0
Humidity: 42%
Wind: 8 mph
UV Index: 2
3 PM
Cloudy Weather
55°
Feels Like 54°
0
Humidity: 40%
Wind: 8 mph
UV Index: 1
4 PM
Cloudy Weather
52°
Feels Like 48°
0
Humidity: 45%
Wind: 8 mph
UV Index: 0
5 PM
Cloudy Weather
46°
Feels Like 43°
0
Humidity: 54%
Wind: 7 mph
UV Index: 0
6 PM
Cloudy Night
45°
Feels Like 39°
0
Humidity: 60%
Wind: 7 mph
UV Index: 0
7 PM
Cloudy Night
41°
Feels Like 37°
0
Humidity: 66%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
37°
Feels Like 36°
0
Humidity: 72%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
36°
Feels Like 34°
0
Humidity: 77%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 83%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 84%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
20 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.7 µg/m³
  • PM10: 5.51 µg/m³
  • O3: 0.015 ppm
  • NO2: 6.8 ppb
  • SO2: 0 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

2 AM
20 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.75 µg/m³
  • PM10: 5.41 µg/m³
  • O3: 0.015 ppm
  • NO2: 6.8 ppb
  • SO2: 0 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

3 AM
18 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.37 µg/m³
  • PM10: 4.87 µg/m³
  • O3: 0.015 ppm
  • NO2: 6.7 ppb
  • SO2: 0 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.52 µg/m³
  • PM10: 3.87 µg/m³
  • O3: 0.021 ppm
  • NO2: 5.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.04 µg/m³
  • PM10: 3.33 µg/m³
  • O3: 0.022 ppm
  • NO2: 4.5 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.68 µg/m³
  • PM10: 2.95 µg/m³
  • O3: 0.022 ppm
  • NO2: 4.1 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.52 µg/m³
  • PM10: 2.81 µg/m³
  • O3: 0.022 ppm
  • NO2: 3.9 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.51 µg/m³
  • PM10: 2.83 µg/m³
  • O3: 0.022 ppm
  • NO2: 4.1 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.59 µg/m³
  • PM10: 2.95 µg/m³
  • O3: 0.023 ppm
  • NO2: 4.4 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.5 µg/m³
  • PM10: 2.91 µg/m³
  • O3: 0.023 ppm
  • NO2: 3.9 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.3 µg/m³
  • PM10: 2.78 µg/m³
  • O3: 0.024 ppm
  • NO2: 3.3 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.2 µg/m³
  • PM10: 2.77 µg/m³
  • O3: 0.024 ppm
  • NO2: 3 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.11 µg/m³
  • PM10: 2.91 µg/m³
  • O3: 0.028 ppm
  • NO2: 2.6 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.19 µg/m³
  • PM10: 3.25 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.37 µg/m³
  • PM10: 3.66 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.71 µg/m³
  • PM10: 4.17 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.18 µg/m³
  • PM10: 4.78 µg/m³
  • O3: 0.029 ppm
  • NO2: 3.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.71 µg/m³
  • PM10: 5.51 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.6 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.16 µg/m³
  • PM10: 6.14 µg/m³
  • O3: 0.026 ppm
  • NO2: 4.6 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.51 µg/m³
  • PM10: 6.64 µg/m³
  • O3: 0.026 ppm
  • NO2: 4.5 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.77 µg/m³
  • PM10: 6.92 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.3 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.08 µg/m³
  • PM10: 7.01 µg/m³
  • O3: 0.025 ppm
  • NO2: 4.4 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.53 µg/m³
  • PM10: 7.26 µg/m³
  • O3: 0.022 ppm
  • NO2: 5.1 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

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