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Nothing cleaner nearby

Yellowknife is breathing 26 cigarettes a week

82.7
PM2.5 µg/m³
170
AQI
109.4
Cleanest in reach · µg/m³
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Yellowknife Clean · PM2.5 0–5 Good · 5–9 Elevated · 9–15 Polluted · 15–35 Unhealthy · 35–55 Severe · 55+
Top pick
Behchokǫ̀
Cel-shaded illustration of Behchokǫ̀
#1Behchokǫ̀PM2.5 109.4Checking road route

Northwest Territories· PM2.5 109.4 µg/m³

Tłı̨chǫ community on Great Slave Lake's north arm west of Yellowknife, a separate air reading across the lake country.

Worse air than home. Don't bother.

PM2.5 is 109.4 µg/m³ here vs 82.7 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at these levels: 109.4/22 × 7 = 35 here; 82.7/22 × 7 = 26 at home.A long-term health-risk equivalence, not literal smoking.See how we work it out →

Air is currently worse here than in Yellowknife

32% worse airChecking trip easeChecking nearby staysChecking today's weather

Observed Jul 27, 8:27 p.m. EDT

PM2.5 is modelled for this town — no monitoring station is close enough for a live AQHI.

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AQHI 2: Low risk (Yellowknife)Observed Jul 27, 8:12 p.m. EDTLast scan Jul 27, 8:27 p.m. EDT · 53 min ago

Why live rankings? Smoke plumes are patchy and shift with the wind, so no direction is reliably cleaner. This list is recalculated from live PM2.5 every hour — and if everything nearby is smoky, it says so.

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What this means · Yellowknife

Yikes!

26cigarettes

per week, if this air holds

Act two · The scale

Where today lands

From a crisp horizon to smoke you can taste — here’s your reading on it.

82.7 µg/m³
CrispSome smokeHeavy smoke

Act three · The ladder

What each rung feels like

  • 0–3µg/m³Natural. About as clean as outdoor air realistically gets.
  • 3–5µg/m³Clean. Crisp, destination-worthy air.
  • 5–9µg/m³Good. Clean city air; most people will not notice anything today.
  • 9–15µg/m³Elevated. Usually no big deal today; sensitive lungs may notice hard exercise.
  • 15–35µg/m³Polluted. Smoke or traffic pollution is now worth acting on.
  • 35–55µg/m³Unhealthy. Symptoms become more likely, especially with asthma or heart disease.
  • 55+µg/m³Severe. Everyone should reduce exposure and clean the indoor air.

Act four · The fine print

The receipts

What is PM2.5?

Fine particles about 30× thinner than a human hair — small enough to slip through your lungs and into your bloodstream. We measure them inµg/m³: micrograms of particle mass in a cubic metre of air.

The math

PM2.5 here is 82.7 µg/m³.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.A week at this level: 82.7/22 × 7 = 26 cigarettes.A long-term health-risk equivalence, not literal smoking.See how we work it out →
See the full method →