Today | Weather | Monday, April 27, 2026

Weather in Sioux City, Iowa

09:28 PM
Now
Cloudy Weather
45° F
Feels Like 34°
Precipitation 0 %
Wind 16 mph
Humidity 74 %
Today
Cloudy Night
Day 52°
Night 39°
Precipitation 5 %
Wind 12 mph

Sioux City Weather Forecast Updated

42 minutes ago
Last updated on

Air Quality in Sioux City

NOW
44 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.5 µg/m³
PM10 0.5 µg/m³
O3 0.047 ppm
NO2 0.3 ppb
SO2 0 ppb
CO 0.12 ppm
NH3 3.2 µg/m³
NO 0 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)
PM2.50.5 µg/m³
PM100.5 µg/m³
O392.88 µg/m³
NO20.56 µg/m³
SO20.01 µg/m³
CO141.1 µg/m³
NH33.2 µg/m³
NO0 µg/m³