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The Air Quality Index Explained: What It Means and How to Stay Safe

By Adeel Hassan NY Times, Aug. 6, 2021

The Air Quality Index measures the density of five pollutants: ground-level ozoneparticulatescarbon monoxidenitrogen dioxide, and sulfur dioxide. It was established by the Environmental Protection Agency as a way to communicate to Americans the cleanliness of the air they are breathing each day. Read more

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