Chula Vista Moderate
Chula Vista, California
Updated: May 11, 2026, 10:00 AM
Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Current Weather
Pollutant Breakdown
Dominant pollutant: PM25
PM2.5 Forecast (next 7 days)
Health Guidance
Data from: CARB - California Air Resources Board, Air Now - US EPA, World Air Quality Index Project
Is the air safe in Chula Vista today?
The current Air Quality Index (AQI) in Chula Vista is 59, which is classified as "Moderate". Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
The AQI scale runs from 0 to 500. Values of 0–50 are Good, 51–100 are Moderate, 101–150 are Unhealthy for Sensitive Groups, 151–200 are Unhealthy, 201–300 are Very Unhealthy, and 301–500 are Hazardous.
Air quality in Chula Vista, California is monitored by local environmental agencies and reported through the World Air Quality Index project. Data is updated hourly and includes PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.