An air quality advisory that was set to last through Monday has been lifted, air district officials said. Over the weekend, ...

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

The Wisconsin Department of Natural Resources has issued an Air Quality Advisory for the following counties: Adams, Buffalo, ...

Each Air Quality Index category, also known as the level of concern, is attached to a certain range of values: Good (green): 0 to 50; Moderate (yellow): 51 to 100; ...

Smoke from Canadian wildfires is causing unhealthy air across North Dakota and Minnesota, with doctors warning of serious ...

The Air Quality Index tracks this kind of pollution with a measurement known as PM 2.5, which quantifies the concentration of particles smaller than 2.5 micrometers in the air.

Michigan EGLE has issued a Statewide Air Quality Alert through 12:00 PM Monday for unhealthy air quality values forecast ...

Wildfires in Canada will take a toll on individuals outdoors today. New York State Department of Environmental Conservation Commissioner Amanda Lefton and State Department of Health Commissioner Dr.