Скачать или смотреть Millions under air quality alerts in US as Canada fire smoke drifts south.

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.

States across the east, including New York, Massachusetts and Connecticut, issued air quality alerts, with officials recommending that people limit outdoor activity.

In New York City, where conditions were expected to deteriorate further through the day, residents were urged to limit their time outdoors, as public schools canceled outdoor activities.

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.