Air Quality Index

The EPA Air Quality Index:

Air Quality Index Levels of Health Concern	Numerical Value	Meaning

	0-50	Air quality is considered satisfactory, and air pollution poses little or no risk.

	51-100	Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

	101-150	Members of sensitive groups may experience health effects. The general public is not likely to be affected.

	151-200	Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.

	201-300	Health alert: everyone may experience more serious health effects.

	> 300	Health warnings of emergency conditions. The entire population is more likely to be affected.

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The mission of the American Lung Association® is to save lives by improving lung health and preventing lung disease.

Personal tools

The mission of the American Lung Association^® is to save lives by improving lung health and preventing lung disease.