uses the air-quality index, or AQI. The scale spans from numbers 0 to 500. A higher AQI value signifies a higher level of air pollution and a greater health risk. On June 7, AQI values of over 400 ...

The color-coded scale stretches from 0 to 500 and is split across six categories, from good to hazardous. If your local air quality is green or yellow (100 or below), it means there’s little ...

The Environmental Protection Agency monitors how polluted or clear the air is with the Air Quality Index, or AQI. The scale runs from ... See the chart below for the full range of the AQI.

NEW YORK (WABC) -- The Air Quality Index is a scale used for daily reporting of how clean or polluted the air is, and what health effects might be of concern. The AQI focuses on what you might ...

Wildfire smoke has led many to start poring over charts and numbers ... The U.S. uses a different scale of measurement, with a much higher range. The Air Quality Index (AQI) is based on air ...

What is the Air Quality Index? The AQI chart is a scale from 1 to 500 used to classify air quality levels using a formula and information of common pollutants in the air. A number is calculated ...