Air Pollution Impact Calculator

For a few days during my thru-hike of the PCT, my brother and I hiked through baaad smoke from the 33,129 acre "Emigrant Fire". We often joked, "well, I've been smoking joints this entire time..."

50
GOOD (0) HAZARDOUS (500)
At Rest
1.0x Intake (6 L/min)
Rest Jaunt Walk Hike Jog STEEP HIKE Run Sprint
1

Acute Lung Stress

0

Evaluating...

Cigarette Equivalent Dose

0.0 Cigs
Proof of Accuracy & Methodology

I. The 2024 EPA Standard ($AQI_{conc}$)

In May 2024, the EPA lowered the primary annual $PM_{2.5}$ standard from $12.0$ to $9.0 \mu g/m^3$. This tool uses the updated linear interpolation breakpoints.

II. The Berkeley Earth Constant

1 Cigarette ≈ 22 μg/m³ per 24 hours.
Dose = (Conc / 22) * (Hrs / 24)

III. Minute Ventilation Scaling ($M$)

The baseline for an adult is $6 L/min$. We calculate the multiplier $M$ as:
M = Activity L/min / 6 L/min Data for "STEEP HIKE" ($60 L/min$) and "Sprinting" ($150 L/min$) is sourced from clinical CPET standards.