Smoke Day Comparison
Normal day vs smoke day: what changes when AQI jumps
This page is built for the real question people ask during wildfire season: how much worse is today than a routine day, and when should the protection plan change?
Useful smoke-day comparisons
Routine day vs smoke day
AQI 50 vs AQI 150
Sensitive-groups day vs smoke day
AQI 75 vs AQI 150
Normal day vs severe smoke day
AQI 50 vs AQI 200
What AQI 50 vs 150 changes in practice
Use the side-by-side checklist below as the fastest way to decide whether the day is still manageable or has moved into smoke-response mode.
Normal baseline
AQI 50
0.55 cigarettes per 24h
Smoke day
AQI 150
2.52 cigarettes per 24h
Next steps
Open AQI 50 vs 150
Open the direct numeric comparison behind the most common smoke-day framing.
Open the wildfire smoke planner
Move from comparison into a full smoke-day action ladder and overnight planning checklist.
Open the calculator at AQI 150
Load the calculator with a smoke-day preset and test different durations.
Trust Signals
Normal day vs smoke day: what changes when AQI jumps
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.