What is the air quality in Mount Vernon WA?

Mount Vernon WA, United States of America has an annual US AQI of 34 (Reasonable) and average PM2.5 of 5.3 µg/m³, ranking #105 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Mount Vernon WA?

January is typically the cleanest month (AQI 32) and August the most polluted (AQI 37).

Where does Mount Vernon WA's air quality data come from?

PM2.5: 1998–2024, 2026 (monitors 2006–2012, 2014, 2016, 2018, 2022–2024, 2026, satellite 1998–2005, 2013, 2015, 2017, 2019–2021; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

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

Mount Vernon WA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
105	Mount Vernon WA, United States of America	North America	AQI 34	PM2.5 5.3 µg/m³