Air Quality in Sioux City, United States
Windy
21.7°C · 46.9% humidity
21.7°
Feels 21.7°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Sioux City's air quality — share it
AQI Forecast
27
4pm
27
27
25
7pm
25
25
25
10pm
25
25
25
1am
25
25
25
4am
25
25
25
7am
25
25
25
10am
27
27
27
1pm
27
27
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. Current PM2.5 concentration in Sioux City is 1.2× the WHO annual guideline of 5 µg/m³.
46.9%
Humidity
62.0 km/h
Wind ESE
1025.7 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.0 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Sioux City?
Temperature & Precipitation
PM2.56.0 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
What is the 7-day forecast for Sioux City?
05-29
31.7° 7.4°
05-30
23.8° 14.9°
1.13 mm
05-31
29.2° 11.6°
2.75 mm
06-01
26.1° 16.2°
3.81 mm
06-02
25.6° 17.2°
0.13 mm
06-03
31.5° 22.2°
06-04
25.1° 16.5°
1.19 mm
Both models agree
Avg diff: 3.9°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T00:19 UTC.