Smoke from Canadian wildfires has impacted the air quality throughout United States, including in the northern High Plains, Midwest, Great Lakes, southern Mid-Atlantic and into the Northeast. This has ...

Air quality alerts use color-coded categories to show when pollution levels may be unhealthy. Code Orange is unhealthy for sensitive groups, while Code Red is unhealthy for everyone. Code Purple means ...

TORONTO, ON- JULY 15 - A swimmer checks out the view of the smoke from Northern Ontario forest fires that has the City of Toronto skyline shrouded in haze as viewed from Humber Park West in Toronto.

NEW YORK CITY - Wildfire smoke can push air quality into dangerous territory quickly, triggering color-coded alerts that range from Code Orange to Code Red, Code Purple and even Code Maroon. What we ...