Today | Weather | Monday, January 5, 2026

Weather in Sioux City, Iowa

08:10 AM
Now
Foggy Weather
28° F
Feels Like 25°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 0
Humidity 100 %
Today
Cloudy Weather
Day 45°
Night 28°
Precipitation 1 %
Wind 7 mph
UV Index (0 - 11+) 2

Sioux City Weather Forecast Updated

Last updated on

Air Quality in Sioux City

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

Pollutant Concentrations:

PM2.5 10.97 µg/m³
PM10 11.62 µg/m³
O3 0.005 ppm
NO2 9 ppb
SO2 0 ppb
CO 0.25 ppm
NH3 2.13 µg/m³
NO 0.21 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)
PM2.510.97 µg/m³
PM1011.62 µg/m³
O39.94 µg/m³
NO217.02 µg/m³
SO20.05 µg/m³
CO283.46 µg/m³
NH32.13 µg/m³
NO0.21 µg/m³