How does the EPA indicate the air quality in a particular region? Explain this system

Question

What will be the ideal response?

Answer 1

ANSWER: To indicate the air quality in a particular region, the EPA developed the air quality index (AQI). The index includes the pollutants carbon monoxide, sulfur dioxide, nitrogen dioxide, particulate matter, and ozone. On any given day, the pollutant measuring the highest value is the one used in the index. The pollutant’s measurement is then converted to a number that ranges from 0 to 500. When the pollutant’s value is the same as the primary ambient air quality standard, the pollutant is assigned an AQI number of 100. A pollutant is considered unhealthful when its AQI value exceeds 100. When the AQI value is between 51 and 100, the air quality is described as “moderate.” Although these levels may not be harmful to humans during a 24-hour period, they may exceed long-term standards. The AQI is color-coded, with each color corresponding to an AQI level of health concern. The color green indicates “good” air quality; the color red, “unhealthy” air; and maroon, “hazardous” air quality.?