Numerous studies have shown that short-term exposure to PM can adversely affect human health. Generally,
exposure to PM is associated with illness and premature death independent of the effects of
other, gaseous pollutants in the atmosphere. The very young, the genetically predisposed, the
elderly, and those with pre-existing heart or lung disease are most susceptible to the adverse health
effects of PM. Striking findings also suggest that extended PM exposure can lead to chronic disease
and/or a shortened life span.
EPA's AirNow Web site provides information about health effects that occur as a result of exposure to particle pollution.
