Smoke from Canadian wildfires is once again flowing into North Dakota, rekindling air quality concerns over the next few days ...

Smoke traveling from wildfires in Canada, North Dakota and Minnesota triggered an air quality warning in northern Wisconsin.

Smoke has made its way back into the northern tier of the U.S., prompting air quality alerts in North Dakota, Minnesota and ...

Smoke from Canadian wildfires is working its way into the northern U.S. this week, prompting warnings from health officials ...

Tens of thousands of residents have evacuated across Canada as the wildfire smoke makes its way south to the United States.

Smoke from Canadian wildfires is flowing into North Dakota again, lowering air quality to unhealthy levels in western and ...

Air quality in western and central North Dakota reached “very unhealthy” levels Wednesday morning as smoke from Canadian ...

Forecasters recently warned north-central states including North Dakota would see stretches of smoke-filled air or hazy skies ...