City Guide
San Francisco AQI planning guide
In San Francisco, air quality decisions often depend on whether the issue is a routine urban reading or a regional smoke event that changes the whole day.
Planning AQI
92
24-hour equivalent
1.42
cigarettes per day
Category
Moderate
Common planning patterns
Neighborhood conditions can feel uneven even when the regional number looks moderate.
Bay Area smoke events can worsen quickly with shifting winds.
A low-reading morning does not guarantee a clean afternoon during fire season.
City planning checklist
- Recheck readings before long outdoor plans.
- Use a cleaner indoor fallback for work, sleep, and child care during smoke events.
- Save useful calculator presets for commute and all-day exposure.
Useful next pages for this city
These linked pages answer the kinds of follow-up questions people usually have after checking the reading.
Commute exposure planner
Use AQI to decide whether a daily commute is routine, cautionary, or worth changing.
Kids and school exposure guide
Plan school runs, recess, and after-school time when children are more sensitive than adults.
Wildfire smoke response plan
Use AQI to decide when normal air-quality habits are not enough and smoke response should begin.