"Unrelenting Smoke: Air Quality Woes Persist in Midwest and Northeast"

Poor air quality caused by smoke from Canadian wildfires is expected to persist in parts of the Northeast and East Coast of the United States, with cities like Detroit, Washington, D.C., and New York City experiencing some of the worst air quality in the world. However, air quality is expected to gradually improve over the weekend due to thunderstorm activity and dispersion of the smoke. Health experts advise people under air quality advisories to stay indoors with air conditioning or wear N95 masks when outside.