Canada wildfires hit northern U.S. air quality - Axios
- Canada wildfires hit northern U.S. air quality Axios
- Smoke from Canadian wildfires reaches US, Minnesota under air quality alert ABC News
- Thousands of Canadians have been forced to evacuate from raging wildfires. Now harmful smoke is blowing into the US CNN
- Minnesota and Wisconsin See Air Quality Warnings From Canadian Wildfires The New York Times