'What's your AQI?'
The so-called AirNow system was created by the EPA in 1998 to serve as a"centralized, nationwide repository" for real-time data collected by the local, state, and federal agencies, including the National Oceanic and Atmospheric Administration , National Park Service, NASA, Centers for Disease Control and Prevention.
And the subsequent Air Quality Index measures the amount of pollution in the air on a 0-500 scale, with the higher number signaling a higher concentration of the following pollutants regulated by the Clean Air Act:The wildfires in Canada are releasing high concentrations of fine particulate matter into air that has drifted south, causing the AQI in states from Vermont to South Carolina to spike.
In New York City, for example, the AQI peaked at 405 on Wednesday afternoon, the highest level since record keeping began, according toAny number over 100 is considered “unhealthy” for sensitive groups, such as children, or people with heart or lung diseases. When the AQI goes above 200, everyone, even those without respiratory conditions, is at risk.“If it’s green or yellow, it's OK for most individuals,” Brady explained.
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