Skies across Massachusetts could remain hazy on Wednesday, but this could also soon change as possible thunderstorms and ...

Air quality in states north of Tennessee has been reduced by smoke from Canadian wildfires, but how will those wildfires ...

The air quality index on Tuesday across the Midwest and the Northeast ranged from "moderate" to "unhealthy" for sensitive adults. Some areas in northern Wisconsin, eastern Pennsylvania, northern ...

Chicago faces an air quality alert due to Canadian wildfire smoke and high ozone levels, with risks for sensitive groups.