Wildfire smoke drifted across Southeast Michigan Wednesday night and a smoky, hazy sky resulting from fine particulate pollution was clearly visible by daybreak on Thursday. 

All of Michigan is under an air quality alert through Friday. 

The air was so bad early Thursday in Southeast Michigan that Detroit was listed as having the worst air quality in the world in the IQAir database, well into the “hazardous” range, topping even Toronto, Canada, and Minneapolis, Minnesota.

The smoke plume from hundreds of wildfires in Canada and Minnesota began crossing into Northern Michigan during the day on Wednesday. By midnight Wednesday, the MiAir database showed significantly deteriorating air quality in Southeast Michigan. 

The CBS News Detroit weather team has declared Thursday and Friday to be NEXT Weather Alert Days, stepping up forecasts and announcements as needed. 

How bad is the air? 

The MiAir database run by the Michigan Department of Environment, Great Lakes and Energy showed air quality numbers well over the “very unhealthy” range in multiple locations in Metro Detroit early Thursday. EGLE says that the readings on Thursday morning were the highest seen for Detroit since at least 2023, during a scenario when wildfire smoke drifted over Michigan.

Other communities in Michigan, including Lansing, Flint and Grand Rapids saw readings at or above the very unhealthy range early Thursday. 

How can this affect your health?

Dr. Herb Aronow, the chair of heart and vascular health at Henry Ford Health, says unhealthy air affects everyone with heart and vascular diseases, even those who haven’t been diagnosed yet.

Even healthy people may notice eye irritation or difficulty breathing during prolonged outdoor activity. 

How widespread is the smoke? 

It’s not just Michigan facing air quality issues. Several states are or will be in the path of the wildfire smoke plume. 

Some of the wildfires feeding the smoke plume are in Minnesota, where much of the state is under an air quality alert. 

An air quality alert called for the Chicago area was aggravated by wildfire smoke drifting into the region. 

Pennsylvania will be under a code red air quality alert on Thursday, the state’s Department of Environmental Protection says. 

And the entire state of Ohio was placed under an air quality alert for Thursday as air quality readings may reach the unhealthy stage, the Ohio Environmental Protection Agency said. 

What does this mean for summer events and programs? 

The combination of poor air quality rising on the heels of a heat wave in Metro Detroit resulted in several summer school and community program closures for Thursday. 

When will Detroit get a break from the smoke? 

A cold front will move through Southeast Michigan Thursday night into Friday, bringing cooler temperatures, lower humidity, and a shift in winds that should gradually push the wildfire smoke out of the region and improve air quality heading into the weekend. 

The above video originally aired on July 15, 2026.

4Warn Weather – The dangerous heat that gripped Metro Detroit Wednesday will ease, but having slightly lower temperatures does not mean that Southeast Michigan is in the clear.

The 4Warn Weather Alert remains in effect Thursday, as a thick plume of wildfire smoke from Canada settles into the region, bringing some of the poorest air quality this season.

While the Heat Advisory was allowed to expire Wednesday evening, the Air Quality Alert continues through Thursday, and for many communities, the smoke will pose the greatest health concern.

Unlike some air quality events driven by ozone or lighter smoke high in the atmosphere, this smoke is expected to settle close to the ground.

The result is unhealthy air pollution for the general population, with some neighborhoods potentially reaching very unhealthy and hazardous levels for a time, especially late Wednesday night through Thursday morning.

A few storms beating the odds Wednesday night

Although most of Southeast Michigan will stay dry Wednesday night, a few isolated thunderstorms developed Wednesday evening along the advancing cold front. Just enough instability developed for a handful of storms to briefly become severe.

The National Weather Service issued Severe Thunderstorm Warnings for portions of Oakland, Genesee and Shiawassee counties, with radar indicating the potential for wind gusts up to 60 mph and hail up to quarter-size.

Quarter-sized hail was reported in Holly at 7:19 p.m.

The Storm Prediction Center noted the overall severe weather threat remained isolated.

Overnight, attention turns back to the arrival of dense Canadian wildfire smoke, which is expected to become the dominant weather story through Thursday.

Smoke thickens late Wednesday night

The cold front opened the door for dense Canadian wildfire smoke to pour into Southeast Michigan on Wednesday.

The thickest smoke is expected overnight into Thursday morning, when cooler temperatures and a stable atmosphere trap the smoke close to the surface.

Visibility may be reduced at times; skies will appear hazy, and many people may notice the smell of smoke even indoors.

Those with asthma, COPD, heart disease, children, older adults, and pregnant women should avoid prolonged outdoor activity.

However, even healthy adults may experience irritated eyes and throats, coughing, headaches, or shortness of breath during periods of heavier smoke.

If possible:

• Limit strenuous outdoor activity.

• Keep windows closed.

• Run your air conditioning on recirculate if available.

• Change air filters.

• Consider wearing a properly fitted N95 mask if you must spend extended time outdoors in smoky conditions.

Still hot Thursday

Even though the oppressive humidity backs off behind the front, Thursday will not feel cool.

Afternoon highs climb back into the lower 90s, with “feels like” temperatures generally remaining in the lower 90s as well.

That is noticeably more tolerable than Wednesday’s triple-digit heat indices, but it is still hot enough to require frequent hydration and breaks if you are spending time outside.

The combination of heat and smoky air may make outdoor conditions especially taxing, even if temperatures are not as high.

Rain chances return

Thursday stays dry before moisture begins returning on Friday.

Scattered showers and thunderstorms become possible Friday afternoon and continue at times into Saturday as the next weather system approaches the Great Lakes.

Not everyone will see rain, but several opportunities for showers and thunderstorms develop through the weekend.

By Sunday and early next week, temperatures settle closer to normal with highs generally in the lower to mid-80s, along with periodic chances for additional showers and thunderstorms into Tuesday.

While the cooler weather will be welcome, air quality should also gradually improve as the weather pattern becomes more active and winds help disperse lingering smoke.

The wildfire smoke will lead to more vibrant and redder sunsets and sunrises. Share your weather and nature photos with Local 4 at MIPics.

The Detroit Red Wings announced on Wednesday that Steve Yzerman is stepping down from his role as GM and executive vice president. 

Yzerman will continue working with the organization as a senior advisor to Red Wings governor and CEO Chris Ilitch. 

The Red Wings are now searching for a new head of hockey operations. 

“Steve’s lifetime of contributions to the Red Wings has meant more to this franchise than words can truly express, and I have the highest level of respect for his continued commitment to our organization,” Ilitch said in a statement. “We are thankful for Steve’s hard work and dedication as General Manager and are grateful knowing Steve will remain where he belongs – here with the Red Wings family.”  

Yzerman returned to Detroit in April 2019 after a successful front office career with the Tampa Bay Lightning, replacing longtime GM Ken Holland. 

“I am sincerely grateful to Chris and the entire Ilitch family,” Yzerman said in a statement. “This organization has given me incredible opportunities, from my time as a player to the privilege of returning as General Manager. I’ve appreciated every experience throughout the years, and I’m extremely proud to remain part of this great franchise.”  

As the Red Wings commence their search for Yzerman’s replacement, Yzerman will remain in his current role to facilitate the day-to-day of hockey operations until a replacement is named. The organization says it will consider both internal and external candidates for the role. 

“Clearly, we are not where we and our fans expect to be as an organization,” Ilitch said. “I’m looking forward to bringing in new leadership to build the championship-caliber organization Hockeytown deserves.”  

“My commitment to the Red Wings and this community will never waver, and I look forward to supporting the organization in whatever role is needed to achieve our collective goals,” Yzerman said. “I want to thank our passionate fanbase for their support, as they are what makes Detroit and the entire state of Michigan a very special place in the hockey world.”  

This is a developing story and will be updated.