Knowing how to read the EPA's Air Quality Index can help you understand whether smoke from numerous Canadian wildfires makes it hazardous to breathe outside air. "The AQI is an index for reporting ...

The index rates how clean or polluted the air is each day. The EPA uses this measure to keep tabs on five kinds of air pollutants. The main concern from the wildfire smoke is fine particle pollution, ...

Gadsden Elementary School District #32 schools now display flags indicating the day's air qualities to help families and ...

Local officials have issued an air quality alert for Wednesday, Sept. 17, across Greater Cincinnati and Northern Kentucky.

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An air quality alert continues for the entire Chicago area Friday, with poor air quality due to smoke from Canada wildfires expected to stick around all day and even into Saturday, the NBC 5 Storm ...

It appeared that, as of Friday, Chicago-area residents wouldn't get a reprieve from poor air quality in the near future. As smoke from Canadian wildfires persisted, the National Weather Service ...

Smoke from Canadian wildfires has reached the northwest Pennsylvania area. Wildfires burning across central Canada throughout the summer and winds have transported smoke over the Great Lakes this past ...

Smoke from the Canadian wildfires will be visible in the Philadelphia region on Tuesday, and an air quality alert has been issued for Wednesday in the Delaware Valley. More than 100 "out of control" ...