What is the air quality in Sunnyvale CA?

Sunnyvale CA, United States of America has an annual US AQI of 47 (Reasonable) and average PM2.5 of 9.2 µg/m³, ranking #582 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Sunnyvale CA?

March is typically the cleanest month (AQI 39) and January the most polluted (AQI 56).

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

PM2.5: 1998–2024 (monitors 2011, 2013, satellite 1998–2010, 2012, 2014–2024). Measured by government monitoring stations. Full sources are on the methodology page.

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

Sunnyvale CA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
582	Sunnyvale CA, United States of America	North America	AQI 47	PM2.5 9.2 µg/m³