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

The Michigan Department of Environment, Great Lakes, and Energy issued an Air Quality Advisory for five West Michigan ...

Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.

The heat warning issued last Friday for the Ottawa-Gatineau region should last until Thursday night, according to Environment ...

EDT on Tuesday, the National Weather Service reported an air quality alert in effect until Thursday at midnight EDT for ...

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 ...

The air quality, according to Environment Canada, in the nation’s capital on Tuesday has improved. The weather agency shows Ottawa’s Air Quality Health Index is at a level 5, or in the moderate risk ...

Wildfire smoke degrades air quality in swaths of Ontario, with Toronto ranking among the worst in the world on Monday.

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Alert for coastal Michigan ...

When air quality levels deteriorate, air quality alerts are released. The Weather Network's Nadine Powell explains the difference between a statement and a warning.

The National Weather Service reported an air quality alert at 11:54 a.m. EDT on Sunday in effect until Tuesday at midnight ...