What is the air quality in Sioux City IA NE SD?

Sioux City IA NE SD, United States of America has an annual US AQI of 47 (Reasonable) and average PM2.5 of 9 µg/m³, ranking #571 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Sioux City IA NE SD?

October is typically the cleanest month (AQI 40) and July the most polluted (AQI 52).

Where does Sioux City IA NE SD's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998–1999, 2014, 2017, 2021–2023; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Sioux City IA NE SD, United States of America — Air Quality & Clean City Guide 2026

Sioux City IA NE SD Air Quality Data

Global rank	City	Continent	AQI	PM2.5
571	Sioux City IA NE SD, United States of America	North America	AQI 47	PM2.5 9 µg/m³