"Wildfire Smoke from Canada Continues to Impact Air Quality in Metro Detroit and Across the U.S."

Air quality in Metro Detroit remains poor due to wildfire smoke from Canada, ranking among the worst in the country and the world. While there has been some improvement, Detroit still had the worst air quality in the US early on Friday, but moved to the seventh-worst globally. The air quality index ranged from "moderate" to "unhealthy" for everyone. An air quality alert was extended for Southeast Michigan, and people are advised to stay indoors, keep windows shut, and wear masks when venturing outside. Other major US cities, including Chicago, Washington DC, and New York City, also experienced poor air quality due to the wildfires. Air quality is expected to gradually improve over the weekend.