When skies are smoky or hazy, there’s a good chance that the air quality has dropped to unhealthy levels. To determine this, ...

But when officials and forecasters classify your city's air as "unhealthy" or "hazardous," what does that really mean? They're using a federal measurement system called the Air Quality Index.

A more accurate way of measuring this pollution would be through its AQI, a tool that measures the quality of air at various levels. A reading of 450-500 is what Delhi is recording at the moment ...

Wildfires in Canadian provinces of Manitoba, Alberta, Ontario and Saskatchewan are creating smoke visible in Michigan. Here's what to know.

However, the general public does not need to be concerned ... than six hours outdoors during a Code Orange Alert. The Air Quality Index (AQI) is an index for reporting daily air quality.

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