San Diego AQI Today
United States · Thursday, March 12, 2026
Real-time Air Quality Index (AQI)
San Diego Weather & Air Quality Overview
San Diego is a city in United States, located in the Northern Hemisphere at coordinates 32.72°N, 117.16°W. With a population of approximately 3.3 million, it is one of the notable urban centers in Americas. San Diego experiences a subtropical climate. This page provides real-time temperature, humidity, wind speed, UV index, air quality monitoring, and a detailed 10-day weather forecast for San Diego, United States.
Right now in San Diego, the temperature is 14°C (feels like 13°C) with clear sky. Humidity is at 84%. Winds are blowing at 8 km/h. Today's high is expected to reach 30°C and the low will be around 14°C.
The current Air Quality Index (AQI) in San Diego is 52, rated as Moderate. The dominant pollutant is PM2.5.
Air Quality in San Diego Today
San Diego AQI (air quality index) is updated in real time. Current conditions, health guidance, and pollutant levels for San Diego, United States are shown above. Compare San Diego air quality with other cities on our AQI rankings or global map.
- Today's high in San Diego: 30°C
- Humidity in San Diego: 84%
- Current AQI in San Diego: 52 (Moderate)
- Wind in San Diego: 8 km/h
Weather in San Diego and the San Diego forecast are updated every few minutes. For more cities, see our weather directory and global AQI map, or check city AQI rankings and weather guides.
Data updates every few minutes. Weather powered by Open-Meteo. Air quality from multiple monitoring networks.