Compare AQI Intent Hub
Compare AQI levels and see what actually changes
These pages are built for the real question users ask after checking the air: not just “what does AQI 120 mean?” but “how much worse is AQI 150 than AQI 50, and when should I change my plan?”
1. Dose jump
See how a step up in AQI translates into materially more PM2.5 and cigarette-equivalent exposure.
2. Action change
Compare when the advice shifts for workouts, commuting, kids, and overnight indoor air.
3. Next step
Use the comparison result as the bridge into city-specific live readings and scenario planning.
High-intent AQI comparisons
These are the pages most likely to match “compare AQI” search intent cleanly.
Cleaner day vs moderate day
AQI 50 vs AQI 100
See how category, PM2.5 dose, cigarette-equivalent exposure, and recommended action shift between these two readings.
Cleaner day vs smoke-affected day
AQI 50 vs AQI 150
See how category, PM2.5 dose, cigarette-equivalent exposure, and recommended action shift between these two readings.
Moderate vs unhealthy for sensitive groups
AQI 100 vs AQI 150
See how category, PM2.5 dose, cigarette-equivalent exposure, and recommended action shift between these two readings.
Moderate vs unhealthy
AQI 100 vs AQI 200
See how category, PM2.5 dose, cigarette-equivalent exposure, and recommended action shift between these two readings.
Unhealthy vs very unhealthy
AQI 150 vs AQI 200
See how category, PM2.5 dose, cigarette-equivalent exposure, and recommended action shift between these two readings.
Typical day vs major smoke day
AQI 50 vs AQI 200
See how category, PM2.5 dose, cigarette-equivalent exposure, and recommended action shift between these two readings.
Compare by user intent
Turn comparisons into live utility
Normal day vs smoke day
A practical comparison page built around the highest-intent smoke-season question: how much worse is today than a routine day, and when should the response plan change?
AQI 50 vs 150
The clearest normal-day vs smoke-day framing for workouts, school pickup, and indoor-air planning.
AQI 75 vs 150
Useful when the baseline day is already a little elevated, but smoke pushes it into a planning problem.
AQI 50 vs 200
The severe-smoke version that shows when the day stops being a comfort issue and becomes an indoor-air-management problem.
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.
City vs city
Los Angeles vs San Francisco
Compare Southern California routine pollution with Bay Area smoke-shift planning.
City vs city
New York City vs Seattle
Contrast street-level urban exposure with wildfire-smoke volatility.
City vs city
Delhi vs Beijing
Compare two high-exposure city baselines and how the protection plan changes.
Trust Signals
Why these comparisons are useful
Review policy
March 2026. We update supporting pages when calculator logic, live data behavior, or source framing changes.
Primary sources
AQI uses EPA / AirNow breakpoint logic. Cigarette-equivalent framing follows Berkeley Earth’s PM2.5 interpretation.
Live data layer
City pages use EPA AirNow where supported, with cached fallbacks and planning baselines if the API fails or coverage is unavailable.