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The smoke from forest fires is still expected to cloud Toronto’s skies on Monday, according to Environment Canada’s special ...
This has left millions of Americans at risk of exposure to poor air quality and health impacts. As people seek ways to stay safe, it is important to understand how the air quality index, ...
AirNow.gov The health impacts included in the index are those that people are likely to experience within "a few hours or days" after being exposed to the air, the National Weather Service Says.