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air quality index

air quality index in Culture

Air Quality Index definition

A measure of the quantity of harmful particles and chemicals in the air.

Note: The index is used by weather forecasters to indicate the purity of the air on a given day. The higher the index, the smoggier (see smog) and more polluted the air.
The American HeritageĀ® New Dictionary of Cultural Literacy, Third Edition
Copyright Ā© 2005 by Houghton Mifflin Company.
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