What is the air quality in Riverside CA?

Riverside CA, United States of America has an annual US AQI of 76 (Polluted) and average PM2.5 of 15.9 µg/m³, ranking #3562 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Riverside CA?

February is typically the cleanest month (AQI 59) and August the most polluted (AQI 110).

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

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

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

Riverside CA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3562	Riverside CA, United States of America	North America	AQI 76	PM2.5 15.9 µg/m³