Metro Vancouver briefly topped the list of worst air quality in the world but as of right now, dropped to second behind Portland.
https://globalnews.ca/news/7331141/v...r-air-quality/
Currently, 5 of the 6 places in the world with the poorest air quality are in North America due to the wildfires.
https://www.iqair.com/ca/world-air-quality-ranking