What is the air quality in Vallejo CA?

Vallejo CA, United States of America has an annual US AQI of 49 (Reasonable) and average PM2.5 of 10.3 µg/m³, ranking #718 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Vallejo CA?

March is typically the cleanest month (AQI 40) and December the most polluted (AQI 66).

Where does Vallejo CA's air quality data come from?

PM2.5: 1998–2024, 2026 (monitors 1999–2024, 2026, satellite 1998–2003, 2010; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Vallejo CA, United States of America — Air Quality & Clean City Guide 2026

Vallejo CA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
718	Vallejo CA, United States of America	North America	AQI 49	PM2.5 10.3 µg/m³