What is aqi in weather: What is the U

What is the U.S. Air Quality Index ( AQI )? The U.S. AQI is EPA’s index for reporting air quality. How does the AQI work? The U.S. Air Quality Index ( AQI ) is EPA's tool for communicating about outdoor air quality and health. The AQI includes six color-coded categories, each corresponding to a range of index values. The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an ... An air quality index ( AQI ) is an indicator of how polluted the air is or how polluted it is forecast to become. It is based on air pollutant concentrations and health effects, and varies by country and pollutant. The Air Quality Index (AQI) is a standardized system used to measure and report air pollution levels in an easily understandable format. It provides a numerical scale that indicates the cleanliness or pollution level of the air, along with associated health advisories. What Is AQI? AQI or Air Quality Index is like a report card for the air around you.It gives you a single number (usually between 0 and 500) that tells you how clean or polluted the air is and what that means for your health.