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Air Quality Index

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

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QUIZ YOURSELF ON OPPOSITES OF RED BEFORE YOU TURN SCARLET
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Which of the following colors is used to symbolize AIR?

notes for Air Quality Index

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 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.

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