Add Yahoo as a preferred source to see more of our stories on Google. The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) But many ...

WASHINGTON (DC News Now) — The Air Quality Index is used for reporting on the daily air conditions, how clean or polluted the air is, and how it will affect you and your outdoor activities. The ...

Canadian wildfire smoke is affecting air quality in parts of Michigan. The EPA's air quality index (AQI) uses a color-coded scale to inform the public about air quality and associated health risks.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. The U.S. Air Quality Index (AQI) is the ...

In recent days, the air quality index has been at "Unhealthy" levels in New York City from the Canadian wildfires smoke. People have been warned to avoid outdoor physical activities. Those who spend ...

Air quality varies based on the type of pollutants in the cycle and can have dramatic ramifications for those breathing ...

The U.S. Environmental Protection Agency’s recent adoption of a more stringent annual limit on fine particulate matter, or soot, fulfills an overdue obligation to curb a pervasive and deadly type of ...

After fires destroyed multiple neighborhoods across Los Angeles County, many residents looked up to find blue, smoke-free skies this week. The Air Quality Index (AQI) — which measures the ...