What is the air quality in Chula Vista CA?

Chula Vista CA, United States of America has an annual US AQI of 55 (Reasonable) and average PM2.5 of 10.9 µg/m³, ranking #1280 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Chula Vista CA?

February is typically the cleanest month (AQI 49) and October the most polluted (AQI 77).

Where does Chula Vista CA's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998–2001, 2004–2005, 2007, 2010–2011, 2017, 2019–2020, 2022–2023; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

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

Chula Vista CA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1280	Chula Vista CA, United States of America	North America	AQI 55	PM2.5 10.9 µg/m³