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 Index, or AQI, and PM2.5, particulate matter which measures 2.5 micrometers or less, are not the same thing. But both do refer to how polluted the air is, just in different ways. AQI, an ...

Check the Air Quality Index (AQI) in your city and stay informed about the air quality levels, from good to severe. Take necessary precautions to protect your health and breathe easy. Understanding ...

This is an archived article and the information in the article may be outdated.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. NEW YORK (PIX11) — More smoke from the ...

Wildfires in Canada are causing air quality issues in Michigan's Upper Peninsula. An air quality advisory is in effect for several counties due to elevated fine particulate matter. Sensitive groups, ...