How is air quality measured?

As smoky air from Canada’s wildfires shrouds broad swaths of the U.S., here are seven facts you should know about measuring air quality.

Southeast Michigan Air Quality alert continues Thursday; people advised to limit time outside still

As the Air Quality Alert remains in effect Thursday for Southeast Michigan, it's advised that people limit their time outside, while those with certain health conditions avoid the outdoors completely.

Another Air Quality Alert in effect Thursday
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An Air Quality Alert is in effect for Southeast Michigan again Thursday, but the haze is expected to lift soon.

Flying woes pile up ahead of Fourth of July holiday travel

Across the U.S., 24,000 flights were delayed Wednesday while 1,600 were canceled due to travel woes from the weather, staffing, and the government placing holds on take-offs.

When will wildfire haze lift from Michigan?
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The weather has come with some of the worst breathing conditions ever in Michigan. Wildfire smoke has continued to clog the atmosphere. Luckily, it should be lifting in the next couple days.

Air Quality Alert in effect in Southeast Michigan -- What the AQI colors mean

In the Detroit area, the Environmental Protection Agency's Air Quality Index (AQI) has been between Orange (unhealthy for sensitive groups) and Purple (very unhealthy) with some areas occasionally moving into the Maroon (hazardous) level on Wednesday. Here's what that means for your health:

Detroit air quality ranks among worst in world - How to protect yourself

Air quality in the Metro Detroit area is some of the worst in the world. On Wednesday morning, Detroit was moving between the second and third position on the list of cities with the worst air quality, due to wildfire smoke.

Air Quality Alert remains in effect for Metro Detroit
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Wildfire smoke continues to blanket the area, with an Air Quality Alert remaining in effect through Wednesday. Alan Longstreet has your full forecast.