Today | Weather | Thursday, February 5, 2026

Weather in Sioux City, Iowa

07:36 PM
Now
Night
43° F
Feels Like 37°
Precipitation 0 %
Wind 8 mph
Humidity 66 %
Today
Cloudy Weather
Day 55°
Night 36°
Precipitation 2 %
Wind 13 mph
UV Index (0 - 11+) 3

Sioux City Weather Forecast Updated

47 minutes ago
Last updated on

Air Quality in Sioux City

NOW
33 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.01 µg/m³
PM10 4.2 µg/m³
O3 0.036 ppm
NO2 2.1 ppb
SO2 0 ppb
CO 0.14 ppm
NH3 0.78 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)
PM2.52.01 µg/m³
PM104.2 µg/m³
O370.67 µg/m³
NO23.93 µg/m³
SO20.07 µg/m³
CO162.2 µg/m³
NH30.78 µg/m³
NO0 µg/m³