The U.S. civil aviation authority announced a partial suspension of air traffic in New York due to smoke from the fires in Canada. The smoke and haze continued to fill the sky across the northeastern U.S. on Wednesday, as wildfires burning hundreds of miles away made the air unhealthy in New York City, Washington, and other areas. The fires have covered parts of the northeastern United States and eastern Canada, turning the air gray, and authorities warned vulnerable residents to stay indoors. Canadian authorities evacuated the largest city in Quebec province, as firefighters battled the threat of out-of-control fires.