The Air Quality Index (AQI), a system used to communicate how much pollution is in the air, is expected to reach the red or ...

Smoke from the more than 700 wildfires burning in Canada is continuing to blanket parts of the Midwest for a final day.

Dr. Dorothy Curran says fine particles in wildfire smoke especially affect sensitive groups, like kids with asthma or Chronic Obstructive Pulmonary Disease (COPD).

Minneapolis faced hazardous air quality, ranking second-worst globally due to Canadian wildfire smoke. Air quality alerts ...

Smoke from Canadian wildfires hovered over several Midwestern states Saturday, bringing warnings of unhealthy air ...

Minnesota is experiencing its longest air quality alert on record — seven days. The alert will remain in effect until noon on ...

Air quality will deteriorate across 12 states through Saturday, mainly in the Upper Midwest, as wildfire smoke pours into the ...

Smoke from Canadian wildfires has sent a blanket of smoke over the midwestern United States this weekend. The National ...

Air quality alerts have been issued across most of the Midwest, and hundreds of wildfires are burning across Canada.

The state of Minnesota is entering another in a long string of summer days marred by air quality alerts. Poor air quality ...