Temperatures are then expected to soar into the lower 90s Thursday through Saturday. The hottest day will likely be Saturday ...

The National Weather Service issued an air quality alert for the city on Thursday and kept extending it through Sunday night. There was no alert Monday.

The National Weather Service issued air quality alerts on Monday for millions of Americans in Wisconsin, Michigan, Pennsylvania, New York, Massachusetts, Vermont, Maine, Delaware, Texas, and Colorado.

Millions of Americans across the Midwest, Northeast and swathes of the South and Southwest are under air quality alerts Monday. Newsweek's live blog is closed.

Haze from Canadian wildfire smoke may not clear from the Chicago area until Wednesday.

However, Lake, Porter, Newton and Jasper counties in Indiana will be under another air quality alert all day Tuesday. The ...

The alert, which goes into effect at midnight. comes as the Chicago area continues to see poor air quality due to the Canadian wildfires.

Smoke from Canadian wildfires continues to affect air quality across the Midwest, though Monday’s conditions were an ...

Delta Air Lines canceled nearly 200 flights over the weekend at the Hartsfield-Jackson Atlanta International Airport in the ...

This past Thursday should have been a beautiful day, a day to throw open the windows and putter in the garden, long-awaited ...

The "unhealthy" air, which ranks as level four of six on the Air Quality Index, comes after multiple consecutive days of air quality alerts.