Wildfires are still raging in Canada, where there have been dozens of active fires, and over 33,000 people have been forced to evacuate their homes.

Detroit currently ranks as the city with the worst air quality in the world as smoke from Canadian wildfires continues to impact the region, according to IQAir, creating health concerns for residents.

Smoke coming in from Canadian wildfires settled over Chicago, causing unhealthy air quality conditions for at-risk groups. The Environmental Protection Agency is set to send out another air quality alert for Saturday.