Here's how to interpret the Air Quality Index values, according to the U.S. EPA: Good (0-50): The level of pollution in the air is of little to no risk. Moderate (51-100): For people who are ...

An AQI of 50 or below means the current air quality is good. The shaded areas of the map show the approximate boundaries where air quality is available and listed as anything other than good. The ...

The map below displays the current air quality at monitoring sites in the U.S., Canada and Mexico. Air monitoring sites are color-coded based on the pollutant (ozone or particulate matter) with ...

Good (0-50): The level of pollution in the air is of little to no risk. Moderate (51-100): For people who are unusually sensitive to air pollution, a moderate health concern may exist.