What is the air quality in Santa Cruz CA?

Santa Cruz CA, United States of America has an annual US AQI of 40 (Reasonable) and average PM2.5 of 7.2 µg/m³, ranking #268 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Santa Cruz CA?

July is typically the cleanest month (AQI 36) and January the most polluted (AQI 43).

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

PM2.5: 1998–2026 (monitors 1999–2000, 2005, 2010–2026, satellite 1998–2009; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

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

Santa Cruz CA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
268	Santa Cruz CA, United States of America	North America	AQI 40	PM2.5 7.2 µg/m³