The Nonlinear Effects of Air Pollution on Health: Evidence from Wildfire Smoke
Working Paper 32924
DOI 10.3386/w32924
Issue Date
We estimate how acute air pollution exposure from wildfire smoke impacts human health in the U.S., allowing for nonlinear effects. Wildfire smoke is pervasive and produces air quality shocks of varying intensity, depending on wind patterns and plume thickness. Using administrative Medicare records for 2007–2019, we estimate that wildfire smoke accounts for 18% of ambient PM2.5 concentrations, 0.42% of deaths, and 0.69% of emergency room visits among adults aged 65 and over. Smaller pollution shocks have outsized health impacts, indicating significant health benefits from improving air quality, even in areas meeting current regulatory standards.
Non-Technical Summaries
- Tiny, inhalable particles known as fine particulate matter (PM2.5) are a primary component of wildfire smoke and are detrimental to human...