Smoke blowing across the northern and eastern U.S. from Canada over the last week has resulted in poor air quality.

Drier and less humid weather arrives Sunday. Expect lots of sunshine, but Canadian wildfire smoke will bring a hazy look to the sky. It will be seasonably warm, with highs near 80.

A special air quality statement that was put in place June 5, when air quality in Ottawa reached "very high risk", has been ...

Poor air quality and reduced visibility are expected in parts of Ontario this weekend as wildfire smoke continues to drift through the region. According to Environment Canada, high levels of air ...

That’s according to IQAir’s Air Quality and Pollution City Ranking, which is updated hourly, the air pollution advocacy ...

The New York State Department of Environmental Conservation and the Department of Health have issued an air quality health ...

The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for the entire state of Minnesota, which will ...

Wildfire smoke will continue to reduce air quality through Sunday as a north wind carries more smoke down from Canada. An air quality alert is in effect for the entire region. By Monday, the wind will ...

On Friday, almost the entire country is under an Environment Canada air quality warning as wildfires continue to rage across ...

Poor air quality fuelled by wildfires burning across the Prairies left a large swath of the country enveloped in a haze again ...

Wildfires forced a further 1,000 people to flee their homes in Manitoba, one of two Canadian provinces under a state of ...

Active children, the elderly and people with asthma and COPD are more likely to suffer an increase in the number and severity ...