The air quality index explained

Name: The air quality index explained
Uploaded: 2022-10-20T20:22:27-04:00
Duration: 1 min 14 s
Description: A regular assessment of air quality in the United States started in 1976, about six years after the Environmental Protection Agency was created.

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The air quality index explained

A regular assessment of air quality in the United States started in 1976, about six years after the Environmental Protection Agency was created.

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