Canadian wildfire smoke spreads across a third of United States | Environment News

More than 212 active fires were burning in the country as of Tuesday afternoon, half of which were out of control, according to the Canadian Interagency Forest Fire Centre.

Smoke from wildfires burning in three Canadian provinces has covered about a third of the United States, forecasters said, but had little effect on air quality except in New England and parts of New York state and the Midwest.

Alerts were issued on Tuesday for parts of Canada and the neighbouring US, warning of the haze,…