EDT on Tuesday, the National Weather Service reported an air quality alert in effect until Thursday at midnight EDT for ...

The EPA's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan ...

Wildfire smoke degrades air quality in swaths of Ontario, with Toronto ranking among the worst in the world on Monday.

The heat warning issued last Friday for the Ottawa-Gatineau region should last until Thursday night, according to Environment ...

With various air quality indexes available, and as wildfire smoke becomes an increasing health risk, here’s what often goes ...

The Michigan Department of Environment, Great Lakes, and Energy issued an Air Quality Advisory for five West Michigan ...

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Alert for coastal Michigan ...

The weather agency has issued a special air quality statement for much of Manitoba, noting that air quality and visibility due to wildfire smoke can fluctuate over short distances.

Canadian wildfire smoke remains in Michigan. On July 16, officials issued an air quality advisory for western counties.

“The air quality is quite good across much of southern BC, except for a few isolated areas. But the Okanagan and the Thompson ...

Much of Central Canada, Manitoba and Saskatchewan were placed under special air quality statements or warnings on Monday due to smoke from wildfires, as Environment Canada advised residents to limit ...