Today | Weather | Tuesday, April 7, 2026

Weather in Sioux City, Iowa

10:31 AM
Now
Cloudy Weather
36° F
Feels Like 27°
Precipitation 29 %
Wind 13 mph
UV Index (0 - 11+) 1
Humidity 62 %
Today
Snowy Weather
Day 45°
Night 41°
Precipitation 63 %
Wind 15 mph
UV Index (0 - 11+) 2

Sioux City Weather Forecast Updated

Last updated on

Air Quality in Sioux City

NOW
44 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.58 µg/m³
PM10 1.91 µg/m³
O3 0.048 ppm
NO2 1.1 ppb
SO2 0.4 ppb
CO 0.13 ppm
NH3 3.22 µg/m³
NO 0.4 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)
PM2.51.58 µg/m³
PM101.91 µg/m³
O393.9 µg/m³
NO22.05 µg/m³
SO21.07 µg/m³
CO154.59 µg/m³
NH33.22 µg/m³
NO0.4 µg/m³