On June 10, I woke up a little uneasy at 7:00 a.m. Eastern time in North America, feeling a little sore in my throat. I took a few sips of water and opened the curtains to see the sky outside the window. Luckily, the sky was still blue, but it felt a little cloudy and I couldn't see the usual white clouds.

It was the fifth day of the worst air pollution in decades in the northeastern U.S. due to the Canadian wildfires, and since June 6, major cities in the eastern U.S. have been lingering with smoke from the wildfires. on June 7 and June 8, New York's AQI (Air Quality Index) exceeded 300 and sometimes 400. air quality was the worst in the world.

At this point, New York's air quality had returned to good levels, with Philadelphia and Washington still on the edge of the yellow zone; and as the smog drifted in, the central U.S. states of Indiana and Ohio became the most polluted areas. Newcastle, Indiana has an AQI of 156, rated as unhealthy and potentially affecting everyone's health, and is currently the highest pollution index in the United States.

The average AQI in the United States in 2022 is 37, and the average index in the most polluted city, Oak Ridge, Ohio, is 96. It is not difficult to understand the panic felt by the American public about this air pollution when compared.