High-risk air quality warnings have been issued for millions of people across North America due to ongoing wildfires in Canada. Smoke from the wildfire blanketed major cities in Ontario and Quebec, including Toronto and its surrounding areas, reports "BBC".

The smoke reached New York and Connecticut, where air quality is classified as "unhealthy".

The Statue of Liberty is covered in haze and smoke caused by wildfires in Canada, in New York. Photo by @alfiky_amr pic.twitter.com/tgzfuxB4Qa

- corinne_perkins (@corinne_perkins) June 7, 2023

Much of the smoke in New York comes from Quebec, where 160 fires are burning.

Environment Canada issued its latest warning on Tuesday for Ottawa, deeming air quality in the Canadian capital to be of "very high risk" to human health. In Toronto and its surrounding areas, air quality is classified as "high risk".

Meanwhile, the U.S. Environmental Protection Agency classifies air quality in much of the northeastern United States as "unhealthy," especially for people who already have respiratory problems.

Air quality advisories include much of New York and Connecticut. They also extend as far north as Boston and as far south as Pittsburgh and Washington.

Parts of eastern Pennsylvania, New York and New England saw their air quality index top 200, meaning conditions that are "very unhealthy for everyone."