Smoke over Denver is from Canadian wildfires

Smoke from wildfires burning in western Canada has left Denver and much of eastern Colorado covered in smoke Saturday morning. Upper level winds blew in more smoke from around 150 wildfires burning in Alberta and British Columbia on Friday, knocking air quality down to "unhealthy" levels and leaving the Mile High City with what was reportedly the second-worst air quality in the world, according to IQAir.com.

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