Nation Seattle ranks worst worldwide for air quality, for a second day, due to ‘widespread’ wildfire smoke October 19, 2022October 20, 2022 Thao Nguyen, USA TODAY Comments Off on Seattle ranks worst worldwide for air quality, for a second day, due to ‘widespread’ wildfire smoke Portland, Oregon, and Vancouver, British Columbia, also rank among the worst locations worldwide, alongside cities in Pakistan, China and India.