PM2.5 is 4.7 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 4.7/22 × 0.5 = 0.1 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 6.8 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 4.7 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 4.7/22 × 0.5 = 0.1 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 6.8 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 4.9 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 4.9/22 × 0.5 = 0.1 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 6.6 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 5.1 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 5.1/22 × 0.5 = 0.1 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 6.4 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 5.1 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 5.1/22 × 0.5 = 0.1 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 6.4 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 5.7 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 5.7/22 × 0.5 = 0.1 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 5.8 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 6.5 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 6.5/22 × 0.5 = 0.1 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 5 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 6.8 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 6.8/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 4.7 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 6.8 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 6.8/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 4.7 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 7.4 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 7.4/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 4.1 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 8.4 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 8.4/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 3.1 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 8.5 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 8.5/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 3 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 8.5 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 8.5/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 3 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 8.5 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 8.5/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 3 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 8.5 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 8.5/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 3 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 9 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 9/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 2.5 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 9.3 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 9.3/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
▼ 2.2 µg/m³ less fine-particle pollution than Detroit right now
PM2.5 is 9.5 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 9.5/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
~2 h 30 min drive/Ontario/Some particle pollution/ PM2.5 9.7 µg/m³
PM2.5 is 9.7 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 9.7/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
PM2.5 is 9.7 µg/m³ here vs 11.5 back home.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h out ≈ 9.7/22 × 0.5 = 0.2 here; 11.5/22 × 0.5 = 0.3 at home.A health-impact equivalence, not literal smoking.See how we work it out →
Phew. Twelve hours out here is roughlyPM2.5 here is 11.5 µg/m³.Berkeley Earth: 22 µg/m³ for 24 h ≈ 1 cigarette.12 h outside ≈ 11.5/22 × 0.5 = 0.3 cigarettes.A health-impact equivalence, not literal smoking.See how we work it out →
That is the fine-particle pollution you'd breathe standing outside all day inDetroit right now, turned into a number your body already understands.
A health-impact equivalence, not literal smoking: Berkeley Earth puts a full day at 22 µg/m³ of PM2.5 at about one cigarette.How we work this out
Why live rankings?
Smoke plumes are patchy and move with changing winds, terrain and weather. Nearby lakefront, coastal and higher-elevation places can be much clearer than Detroit, but no direction is reliably cleaner. That is why this list is recalculated from live PM2.5 readings every hour instead of publishing a fixed escape route. If everything within three hours is smoky, the rankings will say so. Sometimes the honest answer is to stay inside with a filter running.