What is the air quality in Pierre SD?

Pierre SD, United States of America has an annual US AQI of 35 (Reasonable) and average PM2.5 of 5.4 µg/m³, ranking #132 of 5856 cities. Main pollutant: O3.

What is the cleanest month in Pierre SD?

October is typically the cleanest month (AQI 28) and July the most polluted (AQI 43).

Where does Pierre SD's air quality data come from?

PM2.5: 1998–2026 (monitors 2015–2026, satellite 1998–2014, 2022–2024; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Pierre SD, United States of America — Air Quality & Clean City Guide 2026

Pierre SD Air Quality Data

Global rank	City	Continent	AQI	PM2.5
132	Pierre SD, United States of America	North America	AQI 35	PM2.5 5.4 µg/m³