Inland locations can experience more variable air quality due to limited natural ventilation and local emission sources. For the most current conditions, check real-time monitoring data from local air quality stations.
Air quality is typical for San Francisco
24-Hour AQI Trend
Pollutant Breakdown
Peer Comparison
Air quality is typical for San Francisco
Why San Francisco's Air Is What It Is
San Francisco sits in an inland urban setting where local environmental conditions are shaped primarily by density and development patterns. Temperature swings between day and night can be more pronounced than in coastal areas.
Historical Context
Current AQI of 31 reflects recent monitoring data. Local conditions can shift with weather patterns, traffic volume, and seasonal factors.
24-Hour Hourly Forecast
Best window: Check real-time conditions · Peak AQI: 31 at Now
| Time | AQI | Temp (°F) | Humidity | Wind (mph) | PM2.5 | PM10 |
|---|---|---|---|---|---|---|
| Hourly forecast data updates throughout the day — current AQI is 31. Check back for the full 24-hour outlook. | ||||||
Current air quality is good — ideal for outdoor activities. Check the hourly forecast for the best windows.
The air quality data for San Francisco shows Good conditions, providing a baseline for understanding the area's environmental characteristics. Across 94121, this information is updated regularly to reflect current conditions. For those evaluating San Francisco's environmental data, understanding the difference between the overall AQI and individual pollutant readings can provide deeper insight. The 94121 area's monitoring reports typically include both.