City AQI Comparison
Los Angeles vs San Francisco: AQI comparison and planning guide
Compare Los Angeles and San Francisco by current-or-fallback AQI, cigarette-equivalent exposure, and practical next steps.
Uses live AirNow readings where supported and falls back to each city's planning baseline when the API is unavailable or unsupported.
Los Angeles
Southern California
Current or fallback AQI
AQI 105
Category
Unhealthy for Sensitive Groups
Berkeley Earth 24-hour comparison
1.69
Updated Oct 8, 12:55 PM UTC
San Francisco
Bay Area
Current or fallback AQI
AQI 92
Category
Moderate
Berkeley Earth 24-hour comparison
1.41
Updated Oct 8, 12:55 PM UTC
What changes for planning
Cleaner right now
San Francisco
Heavier 24h exposure
Los Angeles
Daily cigarette-equivalent gap
0.3
Los Angeles: Forecast planning snapshot
No live forecast is available for this city right now, so use the planning baseline and local monitoring notes.
San Francisco: Forecast planning snapshot
No live forecast is available for this city right now, so use the planning baseline and local monitoring notes.
Compare city AQI pages with real utility
These comparison pages show which city looks cleaner right now, how much the daily dose gap changes, and what that means for immediate planning.