What is the air quality in Bellingham WA?

Bellingham WA, United States of America has an annual US AQI of 36 (Reasonable) and average PM2.5 of 6.1 µg/m³, ranking #156 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Bellingham WA?

March is typically the cleanest month (AQI 33) and August the most polluted (AQI 39).

Where does Bellingham WA's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998–2001, 2009, 2012, 2015, 2017, 2022; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Bellingham WA, United States of America — Air Quality & Clean City Guide 2026

Bellingham WA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
156	Bellingham WA, United States of America	North America	AQI 36	PM2.5 6.1 µg/m³