Air Quality Index
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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.
On Wednesday, we had a rare afternoon where the Air Quality Index was below 100.
From Slate
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
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.
