What is the air quality in Carlsbad CA?

Carlsbad CA, United States of America has an annual US AQI of 53 (Reasonable) and average PM2.5 of 10.3 µg/m³, ranking #1031 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Carlsbad CA?

February is typically the cleanest month (AQI 47) and October the most polluted (AQI 68).

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

PM2.5: 1998–2026 (monitors 2009–2017, 2020–2026, satellite 1998–2011, 2014, 2018–2019, 2022; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

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

Carlsbad CA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1031	Carlsbad CA, United States of America	North America	AQI 53	PM2.5 10.3 µg/m³