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 ...

Those affected by wildfire smoke focus on the colors red, purple and maroon on the air quality charts. Red used to be the scariest color. Why did that change?(Story aired on ATC on June 28, 2023.) ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. If you haven’t paid ...

According to the federal Environmental Protection Agency, the Air Quality Index is measured on a 500-point scale. The values on that scale are also tied to a six-point, color-coded system -- from Code ...

Air quality worsened to code red Thursday in the Washington, D.C., area because of smoke from Canadian wildfires, posing a health risk to anyone who spends time outside. It comes less than three weeks ...

Smoke from Canadian wildfires is again blanketing parts of the U.S. in a thick haze. Midwestern cities like Chicago, Minneapolis, Detroit and Milwaukee posted some of the worst air quality in the ...