follow Dictionary.com

11 Trending Words of 2014

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 Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

Word of the Day

Word Value for air

3
3
Scrabble Words With Friends