What is the air quality in Rapid City SD?

Rapid City SD, United States of America has an annual US AQI of 42 (Reasonable) and average PM2.5 of 7.1 µg/m³, ranking #313 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Rapid City SD?

October is typically the cleanest month (AQI 36) and July the most polluted (AQI 50).

Where does Rapid City SD's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998, 2000; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

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

Rapid City SD Air Quality Data

Global rank	City	Continent	AQI	PM2.5
313	Rapid City SD, United States of America	North America	AQI 42	PM2.5 7.1 µg/m³