Air Quality in Sioux City, United States
Windy
32.4°C · 41.0% humidity
32.4°
Feels 34.9°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Sioux City's air quality — share it
AQI Forecast
24
9am
24
24
26
12pm
25
25
25
3pm
25
25
25
6pm
25
25
25
9pm
24
24
24
12am
24
24
24
3am
24
24
24
6am
24
25
Sioux City's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
41.0%
Humidity
45.8 km/h
Wind SSE
1012.0 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.25 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Sioux City?
Temperature & Precipitation
PM2.56.25 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX24.9
Extreme
What is the 7-day forecast for Sioux City?
07-21
32.4° 21.1°
6.94 mm
07-22
32.8° 17.8°
0.13 mm
07-23
30.4° 17.0°
07-24
38.8° 17.2°
2.25 mm
07-25
32.3° 18.1°
07-26
30.8° 22.4°
2.06 mm
07-27
39.0° 21.1°
0.44 mm
Both models agree
Avg diff: 5.1°C
What cities are near Sioux City?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:15 UTC.