Air Quality Index
CulturalDiscover More
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.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
By Friday afternoon, although the air quality index had improved, the pollution level remained "hazardous".
From Barron's
"National Air Quality index will need to be revised if we want to include the sensor-based data," says Mr Pathak.
From BBC
The scale however does not go beyond 500 - a cap set more than a decade ago when the National Air Quality Index was launched.
From BBC
It uses the government's Daily Air Quality Index to determine when alerts are triggered.
From BBC
“Windblown ash particles may be too large to be detected by air quality instrumentation and will not influence Air Quality Index levels,” the advisory stated.
From Los Angeles Times
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
