What is the air quality in Santa Rosa CA?

Santa Rosa CA, United States of America has an annual US AQI of 43 (Reasonable) and average PM2.5 of 8.6 µg/m³, ranking #395 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Santa Rosa CA?

March is typically the cleanest month (AQI 33) and January the most polluted (AQI 53).

Where does Santa Rosa CA's air quality data come from?

PM2.5: 1998–2024 (monitors 1999–2013, satellite 1998–2009, 2014–2024). Measured by government monitoring stations. Full sources are on the methodology page.

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

Santa Rosa CA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
395	Santa Rosa CA, United States of America	North America	AQI 43	PM2.5 8.6 µg/m³