Toronto records world's worst air quality as wildfire smoke blankets city

Toronto ranked worst air quality among major cities worldwide on Wednesday, according to IQAir.

Smoke from wildfires turned Toronto's skies a hazy yellowish-grey, surpassing New Delhi and Kinshasa.

Canadian authorities urged residents to remain indoors amid worsening wildfire smoke.

Wildfires are the biggest contributor to Toronto's air pollution spike, with higher temperatures also playing a role, per IQAir's Armen Araradian.