Smoke from the many wildfires in Canada continues to engulf parts of the East Coast of the United States of America.
Smoke from hundreds of wildfires in eastern Canada drifted south, causing a thick, orange-tinged haze in New York and other cities.
Smoke spread further south and west yesterday, blanketing US cities such as Philadelphia, New York and Washington, among others.

According to the Canadian Interagency Center for Forest Fires, about 430 wildfires were reported in Canada yesterday, including more than 200 out of control.
The US National Oceanic and Atmospheric Administration (NOAA) said Canada was on track to have its worst wildfire season on record.
In Washington, numerous outdoor events were canceled and air traffic was restricted.
People in New York state were asked to stay indoors as much as possible, avoid strenuous physical activity and keep their windows closed.
The governor of New York, Kathy Hochul, considered the event an "emergency crisis" and announced that one million masks would be distributed.
"Air quality is rapidly deteriorating. The measured level is now more than double the highest health risk level on the US government scale," Manhattan Borough Mayor Mark Levine said on Twitter.
The National Weather Service said the situation is likely to improve in large parts of the country over the weekend.
Multiple fires have been raging in western Canada for weeks and are now also in the north-east of the country.