On days when wildfire smoke is bad, it looks like Chicago is covered in fog. The iconic city skyline disappears in a hazy sea ...

A mixture of solid and liquid particles known as particulate matter, or soot, is a common source of air pollution.

What is particulate matter? How do I interpret the AQI? There's a lot to learn since Canadian wildfires suddenly sent clouds of hazy smoke over the border and into parts of the Midwest, Northeast and ...

CINCINNATI — Most of the Tri-State area is under an air quality alert, as smoke from wildfires in Canada makes its way south into the US. "Here in Greater Cincinnati, we are experiencing elevated ...

March 11 (UPI) --Fewer than one in five global cities met World Health Organization air pollution standards in 2024 with Central and South Asia accounting for the nine most polluted metropolitan areas ...

FRESNO, Calif. (KFSN) -- Pollutants trapped in the Central Valley air are making the outdoors unhealthy for everyone and it brought patients into the Allergy Institute. "These days have been busier ...

INDIANAPOLIS — Heavy smoke from the Canadian wildfires is permeating the atmosphere in Indiana, and that will continue through Wednesday. Local officials issued a Knozone Action Day for the city of ...