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 ...

In Canada, the Air Quality Health Index (AQHI) is a scale developed to help people understand what the current air quality ...

Canadian wildfire smoke lingers in Michigan. Officials issued an air quality advisory in southeast Michigan for July 15.

Wildfire season is upon us once again, and smoke is reducing air quality through swaths of the country. Environment Canada ...

The Mid-Ohio Regional Planning Commission issued an air quality alert July 15, 2025, for central Ohio, including Columbus, ...

Sensitive groups are advised to stay indoors and limit outdoor activities as pollution and ozone levels spike to unhealthy ...

With various air quality indexes available, and as wildfire smoke becomes an increasing health risk, here’s what often goes ...

The Chicago area recorded ozone levels of 156 late Monday afternoon. Levels above 100 are considered unhealthy. Residents ...

Wildfire season is upon us, and smoke is reducing air quality through swaths of the country. Environment Canada suggests ...

The DEC has issued an air quality health advisory for most of upstate New York due to elevated levels of fine particulate ...

Canadian wildfire smoke will impact all of Wisconsin throughout the weekend. The air quality index is expected to reach the ...

The Illinois EPA declared an Air Pollution Action Day in the Chicago metro area. See today's air quality index forecast for Illinois.