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 ...

Wednesday may be Global Running Day – but for those in the northeast U.S. and Canada, it may be one of the worst days of the year to lace up their sneakers and head outdoors. The air quality — ...

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 ...

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 ...

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 ...