San Diego, Texas Air Quality
Real-time air quality index (AQI) and pollution data
Population: 3,675 • County: Duval
Current AQI
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for San Diego is sourced from the Corpus Christi Dona Park C635 monitoring area, located approximately 47 miles from city center. This EPA-certified station continuously tracks particulate matter (PM2.5), the primary driver of air quality alerts in this area.
San Diego has relatively consistent air quality throughout the year without a strong seasonal peak. Air quality is primarily influenced by local traffic, industrial activity, and regional weather patterns rather than a single seasonal driver.
Frequently Asked Questions About San Diego Air Quality
What is the air quality in San Diego today?
The current AQI in San Diego is 34, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
Air Quality Grade
Better than 0% of US cities
Nearby Cities
Get AQI Alerts
Receive notifications when air quality changes in San Diego
National Rankings
See how San Diego compares to every other US city by air quality.
Most Polluted Cities →All city rankings