Smoke from wildfires in Canada has drifted into the U.S., prompting air quality alerts for Americans as it continues to spread. But when officials and forecasters classify a city's air as "unhealthy" ...

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 ...

The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) But many Angelenos aren’t sure if the AQI tells the full story, especially given how ...

The red-level air quality index (AQI) category—covering values from 151 to 200—means the air is unhealthy for everyone, not ...

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 air in any given ...

Smoke from Canadian wildfires has impacted the air quality throughout United States, including in the northern High Plains, Midwest, Great Lakes, southern Mid-Atlantic and into the Northeast. This has ...

A new LocalCircles survey highlights the severe health and financial impact of toxic air in Delhi-NCR. From rising ...

According to data from air quality monitoring platform AQI.in, Mumbai’s overall Air Quality Index (AQI) stood at 163 during ...

The color-coded Air Quality Index categories you’ll find on the Environmental Protection Agency’s AirNow website rank air quality on a 500-point scale and are meant to give the public an easy way to ...