New York City's air quality has been flagged as critical; breathing in it is equivalent to smoking 10 cigarettes a day.

On the eve of the 2026 World Cup final, smoke from wildfires in Canada has worsened air quality in New York and surrounding areas, prompting local authorities to issue health warnings.

According to TyC Sports, the 2026 FIFA World Cup final will be held at Metropolitan Life Stadium in East Rutherford, New Jersey, near New York City. Smoke from wildfires in Canada has blanketed the area, significantly degrading air quality and prompting local authorities to issue warnings advising residents against prolonged outdoor exposure.

"The situation is very serious. The current air quality levels are dangerous for every New Yorker. If you were thinking you could finally go for a run today, wait until tomorrow," a local official added.

According to the New York Post, pollution expert Michael Petroni stated, "Breathing in New York City air is equivalent to smoking 10 cigarettes a day." In response, authorities advised residents to stay indoors and wear masks if they must go out.

The poor air quality is affecting not only New York but also much of the northern United States. Due to the poor air quality in Chicago, the scheduled friendly match between the Chicago Fire and the Vancouver Whitecaps has been canceled. This adds uncertainty to the upcoming World Cup final.