Wildfires in Ontario have led to the spread of smoke in the northeastern US, including New York.

The devastating wildfires in the Canadian province of Ontario have generated a wave of smoke that spread northeast into the United States on Thursday, severely affecting air quality in states such as Minnesota, Wisconsin, Michigan, and Illinois. Toronto has been reported as the second most polluted city in the world, after Detroit, and New York City is expected to be affected in the afternoon.

Authorities have warned that the air in New York could reach a 'dangerous for health' level due to fine particles, encouraging residents to stay indoors. In Michigan, unfavorable conditions could continue until Friday, and Ontario has reported over 130 active fires, with 63 uncontrolled. Premier Doug Ford has requested federal assistance, and evacuation measures have been implemented in several locations. Although this year's fire season is less severe compared to 2023, 1.9 million hectares have already been destroyed.