MORPC uses the national AQI scale, which ranges from 0 to 500, to inform the public about daily ozone and particle pollution ...

When George Thurston leaves his cottage in the woods of Waccabuc, N.Y., to head for work, a pollution monitor clipped to his ...

Canadian wildfire smoke is affecting air quality in parts of Michigan. The EPA's air quality index (AQI) uses a color-coded scale to inform the public about air quality and associated health risks.

Air quality indexes have prompted health advisories in cities across the Midwest and Northeast, as well as in California, as skylines remain enveloped in a smoky haze. Due to smoke from wildfires, ...