Answer
Jun 14, 2025 - 01:20 PM
A good PM2.5 air quality level is typically considered to be 12 micrograms per cubic meter (µg/m³) or lower, according to the Air Quality Index (AQI) used by the U.S. Environmental Protection Agency (EPA). At this level, air quality is categorized as "Good," meaning it poses little or no risk to health. Levels above this can range from "Moderate" to "Hazardous," with increasing health concerns as the concentration of PM2.5 rises.
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