Horror! New York is choking! City disappeared in the smoke from wildfires in Canada!

Thick smoke from raging Canadian forest fires has covered a swath of North America in unhealthy air. Tens of millions of people in the US were under air quality alerts on Wednesday, as smoke from Canadian wildfires drifted south, turning the sky in some of the country’s biggest cities a murky brown and saturating the air with harmful pollution. The air quality in New York hit the worst levels ever recorded while hundreds of flights at the city’s airports were delayed due to smoke. The concentration of pollutants in the air around New York City hit the highest levels ever recorded on Wednesday afternoon, more than doubling the previous record set the day before. Smoke from wildfires in Canada has been moving south into the US since May. Hundreds of fires are burning in Canada, from the western provinces to Nova Scotia and Quebec in the east, where there are more than 150 active fires in a particularly fierce start to the summer season. As smoke from hundreds of Canadian wildfires continued to billow south over the region, the air quality index hit 413, a level described as “hazardous”