What is the air quality in Billings MT?

Billings MT, United States of America has an annual US AQI of 41 (Reasonable) and average PM2.5 of 6.8 µg/m³, ranking #284 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Billings MT?

October is typically the cleanest month (AQI 35) and August the most polluted (AQI 50).

Where does Billings MT's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2013, 2015–2026, satellite 1998–1999, 2003, 2005, 2007, 2013–2015, 2019; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Billings MT, United States of America — Air Quality & Clean City Guide 2026

Billings MT Air Quality Data

Global rank	City	Continent	AQI	PM2.5
284	Billings MT, United States of America	North America	AQI 41	PM2.5 6.8 µg/m³