Hourly Weather | Today Tuesday, April 28, 2026
Sioux City, Iowa
1 AM
Cloudy Weather
45°
Feels Like 36°
0
Humidity: 78%
UV Index: 0
Wind: 12 mph
2 AM
Cloudy Night
43°
Feels Like 36°
0
Humidity: 80%
UV Index: 0
Wind: 10 mph
3 AM
Cloudy Night
43°
Feels Like 36°
0
Humidity: 81%
UV Index: 0
Wind: 9 mph
4 AM
Cloudy Night
41°
Feels Like 34°
0
Humidity: 82%
UV Index: 0
Wind: 9 mph
5 AM
Cloudy Night
39°
Feels Like 34°
0
Humidity: 83%
UV Index: 0
Wind: 8 mph
6 AM
Cloudy Night
39°
Feels Like 34°
0
Humidity: 83%
UV Index: 0
Wind: 7 mph
7 AM
Cloudy Weather
39°
Feels Like 36°
0
Humidity: 81%
UV Index: 0
Wind: 7 mph
8 AM
Cloudy Weather
41°
Feels Like 39°
0
Humidity: 75%
UV Index: 2
Wind: 7 mph
9 AM
Cloudy Weather
45°
Feels Like 45°
0
Humidity: 66%
UV Index: 3
Wind: 8 mph
10 AM
Cloudy Weather
46°
Feels Like 48°
0
Humidity: 58%
UV Index: 4
Wind: 8 mph
11 AM
Cloudy Weather
48°
Feels Like 54°
0
Humidity: 52%
UV Index: 6
Wind: 8 mph
12 PM
Cloudy Weather
52°
Feels Like 59°
0
Humidity: 48%
UV Index: 7
Wind: 7 mph
1 PM
Cloudy Weather
54°
Feels Like 63°
2
Humidity: 45%
UV Index: 8
Wind: 7 mph
2 PM
Cloudy Weather
54°
Feels Like 63°
5
Humidity: 42%
UV Index: 7
Wind: 7 mph
3 PM
Cloudy Weather
55°
Feels Like 63°
5
Humidity: 40%
UV Index: 6
Wind: 7 mph
4 PM
Cloudy Weather
57°
Feels Like 61°
5
Humidity: 39%
UV Index: 4
Wind: 7 mph
5 PM
Cloudy Weather
57°
Feels Like 59°
5
Humidity: 38%
UV Index: 3
Wind: 8 mph
6 PM
Cloudy Weather
57°
Feels Like 55°
5
Humidity: 39%
UV Index: 2
Wind: 8 mph
7 PM
Cloudy Weather
55°
Feels Like 52°
5
Humidity: 42%
UV Index: 1
Wind: 8 mph
8 PM
Cloudy Weather
54°
Feels Like 50°
5
Humidity: 44%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Weather
52°
Feels Like 48°
5
Humidity: 50%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Weather
48°
Feels Like 45°
5
Humidity: 57%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Weather
46°
Feels Like 43°
5
Humidity: 64%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.5 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

2 AM
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.5 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.5 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.5 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.5 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.5 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.5 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.54 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.53 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.61 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.61 µg/m³
  • PM10: 0.75 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.74 µg/m³
  • PM10: 0.9 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.87 µg/m³
  • PM10: 1.05 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.92 µg/m³
  • PM10: 1.08 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.73 µg/m³
  • PM10: 0.88 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.57 µg/m³
  • PM10: 0.71 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.55 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.51 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.51 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.59 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.73 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.51 µg/m³
  • PM10: 0.84 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.13 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.54 µg/m³
  • PM10: 0.91 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.13 ppm

Health Recommendations:

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