Canadian wildfire smoke returned to Wisconsin this weekend, with unhealthy levels for people with asthma and heart disease.

Environment Canada has placed Toronto, and the surrounding GTA, under both a heat wave and a poor air quality warning due to wildfire smoke.

People living in the West much more likely than those in the rest of the country to have taken action to reduce wildfire risk ...

Smoke from wildfires in Canada is creating overcast skies and unhealthy air quality in parts of Minnesota, raising health ...

Canadian wildfire smoke causes dangerous air quality in 12 Midwest states. Health alerts urge 22 million residents to stay ...

Environment Canada is warning of poor air quality and extreme heat in Toronto on Monday as southern Ontario braces for a week ...

The Canadian wildfires are expected to track east and south, expanding in Michigan as Sunday goes on and additional smoke is ...

Some fans say there was a lack of communication and the decision to postpone the game took too long to make, which went ahead ...

Minnesota and Wisconsin congressional lawmakers wrote a letter to Canadian leaders asking how the government plans to mitigate the wildfire smoke that continues to impact air quality in Minnesota and ...

The city’s air quality was rated at a seven, or “high risk,” on Sunday night and may persist until Monday, Environment Canada ...

As wildfires continue to threaten First Nations in northwestern Ontario, Pikangikum is facing another challenge: a ...

Westerly winds will bring smoke from forest fires over Northern Ontario to the Sudbury area, prompting Environment Canada to ...