Wildfire smoke shrouds Toronto in Canada

CANADA, June 7: Wildfire smoke shrouds Toronto, Canada, on June 6, 2023. Environment Canada issued a special air quality statement for Toronto on Tuesday after the smoke from forest fires in Quebec and northeastern Ontario arrived in Toronto. Poor air quality may persist through most of this week. (Photo by Zou Zheng/Xinhua)

The sunset is seen as wildfire smoke shrouds Toronto, Canada, on June 6, 2023. Environment Canada issued a special air quality statement for Toronto on Tuesday after the smoke from forest fires in Quebec and northeastern Ontario arrived in Toronto. Poor air quality may persist through most of this week. (Photo by Zou Zheng/Xinhua)

Wildfire smoke shrouds Toronto, Canada, on June 6, 2023. Environment Canada issued a special air quality statement for Toronto on Tuesday after the smoke from forest fires in Quebec and northeastern Ontario arrived in Toronto. Poor air quality may persist through most of this week. (Photo by Zou Zheng/Xinhua)

Wildfire smoke shrouds Toronto, Canada, on June 6, 2023. Environment Canada issued a special air quality statement for Toronto on Tuesday after the smoke from forest fires in Quebec and northeastern Ontario arrived in Toronto. Poor air quality may persist through most of this week. (Photo by Zou Zheng/Xinhua)