Air Quality in Sioux City, United States
Windy
22.2°C · 36.0% humidity
22.2°
Feels 22.2°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Sioux City's air quality — share it
AQI Forecast
25
8am
25
25
26
11am
25
25
25
2pm
25
25
25
5pm
25
25
25
8pm
25
25
25
11pm
25
25
25
2am
25
25
25
5am
24
24
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.
36.0%
Humidity
41.9 km/h
Wind N
1021.8 hPa
Pressure
12.9
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 INDEX12.9
Extreme
What is the 7-day forecast for Sioux City?
09-05
35.7° 19.0°
0.75 mm
09-06
33.9° 10.3°
1.31 mm
09-07
26.5° 19.1°
2.94 mm
09-08
28.9° 17.9°
0.13 mm
09-09
34.3° 19.4°
09-10
31.1° 13.8°
18.06 mm
09-11
26.8° 13.2°
0.5 mm
Both models agree
Avg diff: 6.5°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T16:40 UTC.