Air Quality Index
A measure of the quantity of harmful particles and chemicals in the air.
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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
How to use Air Quality Index in a sentence
By comparison, New York's Air Quality Index was 30 on Friday morning.
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