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Open-Meteo
USA AQI Checker (Air Quality) helps you check current air quality risk levels so you can make safer daily activity decisions.
USA AQI Checker (Air Quality) is a high-performance utility designed to help users streamline their workflow. Built with modern web technologies, it ensures fast processing times and high-quality outputs directly in your browser.
AQI categories are mapped to standard threshold bands (Good, Moderate, Unhealthy) with guidance for common risk groups.
The Air Quality Index (AQI) is used by government agencies to communicate how polluted the air is currently or how polluted it is forecast to become.
The AQI focuses on five major pollutants: ground-level ozone, particle pollution (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide.