State officials from Maine to New York issued alerts for fine particulate matter, a toxic byproduct of wildfires that is ...

In the United States, there are 102 wildfires actively burning, according to the National Interagency Fire Center. A majority of those wildfires are in Alaska. Map of wildfires in US, Canada ...

Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.