Concerts, baseball games, and flights in the East and Midwest are among the cancellations being wrought by the excessive smoke from more than 400 Canadian wildfires.
The orange haze has residents in those areas once again wearing masks left over from the pandemic, as unhealthy air pollutants made breathing difficult.
The air quality index, a U.S. Environmental Protection Agency metric for air pollution, exceeded 400 at times in New York and Pennsylvania.
A level of 50 or under is considered good; anything over 300 is considered “hazardous,” when even healthy people are advised to curtail outdoor physical activity.
Read more on deadline.com