What is the air quality in Boise ID?

Boise ID, United States of America has an annual US AQI of 48 (Reasonable) and average PM2.5 of 8.2 µg/m³, ranking #593 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Boise ID?

March is typically the cleanest month (AQI 37) and August the most polluted (AQI 58).

Where does Boise ID's air quality data come from?

PM2.5: 1998–2026 (monitors 1998–2002, 2005, 2007–2009, 2021–2026, satellite 1998, 2002–2004, 2006, 2009–2020; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Boise ID, United States of America — Air Quality & Clean City Guide 2026

Boise ID Air Quality Data

Global rank	City	Continent	AQI	PM2.5
593	Boise ID, United States of America	North America	AQI 48	PM2.5 8.2 µg/m³