The U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health.

While officials continue to monitor the smoke lingering in Michigan, here's how to read the Air Quality Index: The AQI ...

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An AQI value of 100 is considered the threshold for safe air quality. Values at or below 50 are considered good, with 51 to 100 considered “moderate,” or potentially risky for people who are ...

The classifications are based on a federal measurement system called the Air Quality Index. The Air Quality Index is used nationwide to measure the severity of air pollution and categorize the ...

As of early Thursday, the air quality for much of northeast Illinois, including multiple suburbs to the north and some to the ...

Fortunately, the US Environmental Protection Agency has a resource called the Air Quality Index to help monitor air quality. We'll explain how it works and how you can use it to avoid unhealthy ...

Parts of the Twin Cities registered upward of 240 on the air quality index — levels considered “very unhealthy” for everyone ...

Depending on the AQI, you may need to limit your exposure to outdoor air and remain in cleaner indoor environments, she adds. For the general population, it’s especially important to avoid ...

Sam Delgado was a Future Perfect fellow writing about labor and food systems, public health, and literacy. The Palisades and Eaton fires in Los Angeles have destroyed over 10,000 structures ...