['General Duty Clause', 'Toxic and Hazardous Substances - OSHA']
['Toxic and Hazardous Substances - OSHA', 'Air Contaminants', 'General Duty Clause']
03/12/2025
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The AQI is a uniform color-coded index developed by the Environmental Protection Agency (EPA) for reporting and forecasting daily air quality nationwide. The AQI reports common ambient air pollutants regulated under the Clean Air Act. It informs the public about local air quality levels, who may be affected, and steps to take to reduce exposure.
The AQI uses a normalized scale from 0 to 500, with higher AQI values indicating poorer air quality and a higher health concern. EPA explains that AQI values at and below 100 are generally considered satisfactory, while values above 100 are considered unhealthy.