Pomona’s air quality consistently ranks among the poorest in the South Coast Air Basin. This unfortunate situation is attributable to a confluence of factors including geographic location, meteorological conditions, and significant sources of pollution. The city is situated in the eastern portion of Los Angeles County, downwind from major sources of emissions and within a valley that traps air pollutants.
Poor air quality poses substantial risks to public health, increasing the incidence of respiratory illnesses, cardiovascular problems, and other adverse health effects, particularly among vulnerable populations such as children, the elderly, and individuals with pre-existing health conditions. Historically, industrial activity and high levels of traffic in the greater Los Angeles area have contributed to the region’s persistent air quality challenges. Efforts to mitigate these problems are crucial for improving the well-being of residents.