How clean is the air where you are today?Find cleaner places to go outside.
Latest scan — 141 of 200 cities breathing easy. Aug 23, 6:27 p.m. EDT · 49 min ago
Where the cleaner air is right now
Every dot is a city we cover, coloured by its live air.Click one to load its page — how clean its air is today, and the cleanest air within a drive.
Questions
How many cigarettes a week is this air?
We convert the live PM2.5 reading where you are into a cigarette-smoking equivalent, using Berkeley Earth’s finding that 22 µg/m³ over 24 hours carries roughly the health impact of one cigarette. Every number on the site is a weekly figure: PM2.5 ÷ 22 × 7.
Is the cigarette number literal?
No — it’s a health-impact equivalence for fine particles, not literal smoking. It lines up the harm of wildfire-smoke particulate against a yardstick most people already understand. See the math.
Where does the data come from?
Official Canadian AQHI from Environment and Climate Change Canada, official U.S. AQI from EPA AirNow, and modelled PM2.5 where official coverage is unavailable. Full sources.
How are nearby escapes ranked?
By measured air first — lowest PM2.5 wins — with verified road drive time as the tie-breaker. We never estimate a road route we cannot verify, and never plot an interpolated reading as a point.