The EPA's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan ...

Topline. Here’s how to understand the Environmental Protection Agency’s Air quality index (AQI), which measures, on a 300-point scale (along with six categories and advisories), the quality of ...

The DEC has issued an air quality health advisory for most of upstate New York due to elevated levels of fine particulate ...

Air officially becomes unhealthy for at-risk groups—such as the elderly or people with asthma—when AQI is orange, or above 101. And it becomes unhealthy for all populations at 151—or code red.

As of Thursday morning, New York City and Washington, D.C. have the two worst air quality conditions in America, according to IQ Air’s live ranking of major world cities, which ranks the cities ...

What doesn't AQI tell us? The Air Quality Index does not take into account many gas or particle contaminants that are produced during wildfires, particularly when houses, cars and other man-made ...

Most of us don't really know much about how air quality is measured, or the AQI, for that matter. As our local AQI soared past 200, I was quickly motivated to find out, and to pass along what I ...

The Air Quality Index is a scale used for daily reporting of how clean or polluted the air is, ... The higher the AQI value, the greater the level of air pollution and the greater the health concern.

The Illinois EPA declared an Air Pollution Action Day in the Chicago metro area. See today's air quality index forecast for Illinois.

Air quality is measured with the U.S. Air Quality Index (AQI), and it's reported daily by the Environmental Protection Agency and other government agencies.