Today | Weather | Thursday, January 8, 2026

Weather in Sioux City, Iowa

01:42 AM
Now
Cloudy Night
32° F
Feels Like 28°
Precipitation 0 %
Wind 6 mph
Humidity 80 %
Today
Snowy Weather
Day 39°
Night 23°
Precipitation 81 %
Wind 10 mph
UV Index (0 - 11+) 1

Sioux City Weather Forecast Updated

11 minutes ago
Last updated on

Air Quality in Sioux City

NOW
27 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 6.57 µg/m³
PM10 8.34 µg/m³
O3 0.013 ppm
NO2 6.8 ppb
SO2 0 ppb
CO 0.21 ppm
NH3 0.51 µg/m³
NO 0.01 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)
PM2.56.57 µg/m³
PM108.34 µg/m³
O325.72 µg/m³
NO212.82 µg/m³
SO20.02 µg/m³
CO243.27 µg/m³
NH30.51 µg/m³
NO0.01 µg/m³