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How Does The U.S EPA Report on Air Quality ?

Breezometer

In both the US AQI and the Nowcast, the higher the value, the greater the level of air pollution, and the greater the health concern. What Pollutants Does it Cover? Ground-level ozone (03) Particle pollution (PM2.5 and PM10) Carbon monoxide (CO) Sulfur dioxide (SO2) Nitrogen dioxide (NOx).