Graphic regarding the Air quality advisory in southeastern counties posted on X.© National Weather Service The six color-coded categories in the Air Quality Index.© AirNow ...

Wildfires in Canada are sending heavy smoke across the northern U.S., and New Jersey is experiencing some unhealthy air ...

Posted: Jun 4, 2025 / 06:55 PM CDT Updated: Jun 4, 2025 / 06:55 PM CDT The U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health.

Wildfire smoke blankets much of the East Many of the areas experiencing wildfire smoke will see moderate air quality for the next several days, according to the U.S. Air Quality Index.

The EPA's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan accordingly in Michigan.

As of early Tuesday, Cave Junction, Oregon, had the worst air quality in the country, with a hazardous Air Quality Index reaching 382. Air quality levels in the hazardous range trigger health ...