San Jose Air Quality
Current air-quality information for San Jose, United States.
Air quality may be acceptable, though unusually sensitive people may notice effects.
World Air Quality Index Project (WAQI) · Updated 2026-10-15T23:00:00-07:00Health context
At the current AQI of 53, San Jose is in the Moderate category. Most people can continue normal activities; people who are unusually sensitive to air pollution may consider reducing prolonged or very strenuous outdoor exertion if they experience symptoms. Current pollutant values shown for San Jose are PM2.5 53 µg/m³, O₃ 2.4 µg/m³, NO₂ 35.4 µg/m³. The current reading is identified on this page as World Air Quality Index Project (WAQI).
Air-quality information is not medical advice. People with asthma, heart or lung disease, children, older adults and other sensitive groups may need to take additional precautions when pollution is elevated.
Recent History & Forecast
This chart shows atmospheric-model AQI history and forecast from Open-Meteo / Copernicus Atmosphere Monitoring Service (CAMS) model. It is separate from any monitoring-station observation shown in the Current AQI card.
What does AQI 53 mean in San Jose?
San Jose currently has an AQI of 53, which falls in the Moderate category. Air quality is generally acceptable for most people. People who are unusually sensitive to air pollution may notice symptoms during prolonged or strenuous outdoor activity and can reduce exertion if needed. The pollutant values currently shown for San Jose are PM2.5 53 µg/m³, O₃ 2.4 µg/m³, NO₂ 35.4 µg/m³. The displayed current conditions are identified as World Air Quality Index Project (WAQI).
Nearby cities
- Fremont air quality — approximately 25 km away
- Oakland air quality — approximately 61 km away
- San Francisco air quality — approximately 67 km away
- Modesto air quality — approximately 86 km away
- Stockton air quality — approximately 87 km away
- Elk Grove air quality — approximately 127 km away
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