An assessment of health effects due to ozone and particulate matter (PM10) suggests that each of the 12 million residents of the South Coast Air Basin of California experiences ozone-related symptoms on an average of up to 17 days each year and faces an increased risk of death in any year of 1/10,000 as a result of elevated PM10 exposure. The estimated annual economic value of avoiding these effects is nearly $10 billion. Attaining air pollution standards may save 1600 lives a year in the region.

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As China advances its overall program of economic development, many Chinese cities consistently suffer from unhealthy levels of air pollution. One of the groups most affected is children. This paper provides some quantification regarding the extent of various morbidity costs upon children in portions of urban China. Using China-based health-effects and valuation studies, the authors project, and value in dollar figures, the number of averted cases of childhood colds, bronchitis, asthma, and respiratory-related hospital visits resulting from a lowering of air pollution levels. The results indicate that these child morbidity benefits may be substantial, with a mid-range value of nearly $3.5 billion over the period 2002-2011.