Tag Archives: Michigan Air Quality

Secondary Sources of Particle Pollution Affect Southeastern Michigan, Even After the Wildfire Smoke Clears

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Michigan’s air quality has received a great amount of attention over the last several months. With wildfires still burning and winds bringing smoke into Southeastern Michigan, the region has had more than a dozen Ozone Action days. This increase in Ozone Action days has brought about increased attention to what poor air quality means for our health and what is causing the poor air quality. Smoke caused by increased temperatures and drought has caused wildfires in northern Michigan and Canada; the drought and increased temperatures are direct results of climate change. Climate change is caused by various factors, many of which are related to pollutants.

In this post we will further examine the air quality of Southeast Michigan and some of the factors behind it, particularly some of the region’s biggest polluters.

Of the seven counties in Southeast Michigan, three received an “F” grade for air quality from the American Lung Association in the 2023 State of the Air Report, and the other two that had enough information to be graded did not receive higher than a “C” grade.  These grades are based on the number of high ozone days in each county and the change in particle pollution from day-to-day and year-to-year.

Wayne, St. Clair and Macomb counties all received “F” grades for air quality in the 2023 State of the Air Report, with Wayne County have 11 “Orange Days” in 2022, St. Clair County having 10 and Macomb County having 16 “Orange Days.” According to the American Lung Association, when a county has an “Orange Day” that day is deemed “unhealthy for sensitive groups.” Additional colors in this ranking index include red for “unhealthy,” purple for “very unhealthy,” and maroon for “hazardous.” Benzie and Mason counties were the only two in Michigan to have red days.

Furthermore, according the American Lung Society’s State of the Air Report, the Detroit area was ranked the twelfth most polluted for year-round particle pollution.

Particle pollution is of serious concern because it negatively impacts individuals’ health, causing respiratory and cardiovascular problems and even premature death. According to the Centers for Disease Control, there are two sources of particle pollution, primary and secondary sources. Primary sources cause particle pollution on their own; wood stoves and forest fires are primary sources. Secondary sources let off gases that can form particles. These sources include power plants, factories, construction sites, vehicles and coal fires.

In Southeast Michigan there are several secondary particle pollution sources that have a negative impact on the area’s air quality. According to climatetrace.org, a global non-profit organization that independently traces greenhouse gas emissions, some of the area’s highest emitters are an oil refinery, two steel plants, an airport and a powerplant. These emitters are:

Marathon Petroleum CO Detroit:

Ranked 378/80,188 Worldwide: for Carbon Dioxide emissions (CO2E)

Cleveland-Cliffs Dearborn Steel Plant

Ranked 296/80,188: for Carbon Dioxide emissions (CO2E)

Detroit Metropolitan Wayne County Airport

Ranked 917/80,188 for Carbon Dioxide emissions (CO2E)

Gerdau Monroe Steel Plant

Ranked 1,450/80,188 for Carbon Dioxide emissions (CO2E)

Monroe Michigan Power Plant (DTE)

Ranked 37/80,188 for Carbon Dioxide emissions (CO2E)

These rankings and the acknowledgement of these assets on the Climate Trace map use data from 2021.

Other secondary sources that contribute to particle pollutants in the Metro-Detroit are the highways, the Ambassador Bridge and, most recently, Stellantis manufacturing plants in Warren and Detroit. Over the last several months, Stellantis has been fined over $500,000 for violating emission standards, according to Crains Detroit. Now, instead of trying to cut back on the emissions, Stellantis has submitted applications to the Michigan Department of Environment, Great Lakes and Energy to raise emission levels of volatile organic compounds and particulate matter at the Warren Plant and to raise the amount of permitted particulate emissions at the Detroit Plant.

It remains unknown what the State of Michigan will do with Stellantis’ requests, but the State and the federal government both need to enforce stricter emission standards, both the benefit of the environment and the population. Higher accountability standards are needed, as are means to produce power and products in ways that do not create greenhouse gases.

Various Populations At-Risk By Continued Poor Air Quality in Michigan

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Ozone action season is upon us here in Southeast Michigan; it began March 1 and continues through the end of September. Ozone Action Days are declared when hot temperatures are expected to combine with pollution, creating high amounts of ground-level ozone. Ground level ozone, especially in excess, can cause a human health threat, particularly to vulnerable population. These vulnerable populations include children, those 65 years of age or older, those with asthma, COPD, cardiovascular disease, lung cancer and those who are pregnant.

In 2022 in Southeast Michigan there were five Ozone Action Days, according to the Southeast Michigan Council of Governments, or days when the public is asked to do less strenuous activities and to reduce the ways in which they may contribute to air pollution. While we were certainly hoping for zero Ozone Action Days in 2023, we have already had 14, due in large part to the smoke that has drifted to Southeast Michigan from the Canadian and Northern Michigan wildfires. The most recent Ozone Action Day in Southeast Michigan was declared on July 5, 2023 and the first of the season was declared on April 15, 2023.

With nearly triple the number of Ozone Action Days in 2023 compared to 2022, concerns of air quality remain a constant worry throughout Michigan, as does the population’s health, particularly our most vulnerable populations’. Each year the American Lung Association releases a State of the Air Report that examines air quality at the county, state and national levels and how it impacts certain populations. For the 2023 State of the Air Report, The American Lung Association had data on the vulnerable populations of Macomb, Oakland, St. Clair, Washtenaw and Wayne counties.

As the data shows, children (those under the age of 18) are the category with the highest percentage of individuals at risk. Of the five counties with such data available from the American Lung Association, between 18 and 24 percent of the populations are children, with Wayne County having the highest percentage and Washtenaw County having the lowest percent. The category of those 65 years of age or above had the second highest percentage of individuals at risk, with between 15 (Washtenaw County) and 19 percent (St. Clair County) of the population being at risk of health complications from high ground ozone levels.

Of the diseases/conditions that can contribute to health problems during Ozone Action Days, adult asthma was the most common among the counties in Southeast Michigan (between 9-10 percent of the populations in the counties had adult asthma). Of the child population in the region, each of the five counties discussed in this post had 7 percent of that population with childhood asthma.

For COPD, less than 7 percent of the populations in Macomb, Oakland, St. Clair, Washtenaw and Wayne counties had the disease, except for Wayne County where the American Lung Association reported 11.5 percent of the population had COPD.  Heart disease, lung cancer and being pregnant also cause increased health risks during high ozone days, and of those three categories heart disease had the highest percentage of individuals who could be impacted.

While we can’t control how and when wildfire smoke will drift through our region there are actions we can take to help lower the amount of particles in the air, in general, and especially during Ozone Action Days.

According to the Southeast Michigan Council of Governments, to help lower the amount of ground level ozone in the air we can:

  • Delay mowing your lawn until evening or the next day. Exhaust from a lawn mower and other gas-powered lawn and garden equipment help form ozone.
  • Drive less, telecommute, bike, or walk. This helps reduce traffic congestion and air pollution.
  • Avoid refueling vehicles during daylight hours. Fumes released at the gas pump contribute to ozone formation.
  • Delay or combine errands. This will reduce traffic congestion and air pollution.
  • Reduce electricity use.

With wildfires still burning in Canada, temperatures continuing to rise and air pollution still occurring in Southeast Michigan, it is likely the number of Ozone Action Days in Southeast Michigan will rise from 13. For some of our most vulnerable populations, summer days may be spent inside more often than expected, now and in the future. As noted in our previous post, the wildfires causing our most recent Ozone Action Days are related to climate change, which is creating hotter and dryer seasons.

And, while wildfires are impacting our air quality, so is pollution, which also is a driving factor in climate change. Two of the vulnerable populations we did not discuss in this post are those in poverty and certain minorities. We will further examine how these populations are impacted by not only air quality, but also pollution, in future posts as we have a larger conversation on environmental racism.

Michigan Air Quality Remains Poor, State at Risk of Increased Fires

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As of 10 p.m. on Monday June 26, some places in Michigan had Air Quality Index (AQI) levels above 150, a level that is serious for even healthy people and can be dangerous for people with serious health conditions, according to PurpleAir.com. This website tracks hyperlocal quality throughout the country on a daily basis; to view current information click here.

The poor air quality in Michigan, currently, is a result of massive fires in Canada, particularly Quebec, with smoke drifting down into Michigan.

But Michigan is also facing a substantial increase in wildfires of its own. And it could get worse.

The average number of fires per year in Michigan is 337, according the Michigan DNR, and halfway through 2023 the state is on pace to exceed that average with 238 fires having already been reported. According to the Michigan Department of Natural Resources there have been 205 total fires in Michigan’s lower peninsula in 2023, as of June 26, 2023, and 33 in the upper peninsula.

There are several reasons for fires, which include everything from lightening (279 since 2006) to fireworks (53 since 2006) to debris burning (1553 since 2006) and more. But one common factor amongst many fires is a dry environment that allows sparks to turn into flames and flames, in some cases, into raging fires. As of June 26 of this year, 2,532 acres of land had been burned by fires in Michigan; the average number of acres burned by fires in Michigan in June is 270. The Wilderness Fire Trail in Crawford County, which was started by a bonfire, burned more than 2,000 acres of land in June, according to the Associated Press. This wildfire contributed to the above average number of acres burned by fire in 2023. Michigan wildfires also drew attention in May, with more than three dozen being reported, according to Bridge Magazine. The cause? Drier than usual weather. According to the National Integrated Drought Information System, May of 2023 was the ninth-driest May in Michigan since the federal government began keeping records in 1895.

With summer just beginning, we are nowhere near being out of fire season. According to the US Drought Monitor, created by the University of Nebraska-Lincoln, much of Michigan is at least abnormally dry, as of June 22, 2023. The western portion of the Upper Peninsula and about a third of the Lower Peninsula (the thumb and the top of the “mitten”) have been deemed “abnormally dry,” and nearly all the remaining portion of the “mitten” (including Wayne County) have been deemed “moderately dry.” There is also an area in mid-Michigan that has been deemed to be in a severe drought; the eastern portion of the Lower Peninsula has no drought conditions.

With drier conditions being a factor in increased fires across the state of Michigan, we must also touch on what is behind the drier conditions. Climate change, driven by increased emissions, pollution and more, can be dubbed as the main culprit behind increased drought conditions in certain areas (and increased drought in other areas, but that is for another day).

In Michigan, average temperatures have already risen 2.5 degrees, with summers being hotter and heatwaves being stronger. Fast forward to 2100, summers in Isle Royale National Park, for example, are expected to be 11 degrees hotter, according to statesatrisk.org.

The chart below shows just how Michigan’s annual daily temperatures have changed since 1900 and how they are expected to change up to 2100, depending on the amount of emissions we continue to pump into the environment (Southeast Michigan has several high emission emitters, as will be discussed in detail in a future post). The observed data is through 2020 and shows that Michigan’s average temperature has increased by nearly 3 degrees (Fahrenheit) over time. According to the data set from The Cooperative Institute for Satellite Earth System Studies and the National Oceanic and Atmospheric Administration (NOAA), even with lower emissions temperatures are expected to increase in Michigan by a minimum of 3 degrees through 2100. That number could increase to at least 12 degrees though if the emissions we produce increase.

With climate change having a direct impact on our environment, it is also having a direct impact on our lives. We know drought can be catastrophic to crops, our food systems and the economy and we know fires cause destruction. It should also be known that fires also have a direct impact on air quality, which affects the lives of all of us.

Next week we will dig into how Michigan’s air quality ranks and how the fires in Michigan, and beyond, have making it much worse in recent weeks.

Southeast Michigan’s Poor Air Quality a Result of Climate Change

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Air quality in Southeast Michigan has been notably poor in recent weeks, with three Ozone Action Days occurring in June thus far. According to the Southeast Michigan Council of Governments, Ozone Action season began on May 1 in Southeast Michigan. This year is the 30th year of the voluntary program that helps keep Southeast Michigan’s air clean. In 2022, there were five Ozone Action days.

As we’ve discussed in previous posts, clean air is vital to healthy populations, and in Southeast Michigan clean air has been hard to come in recent weeks. The Canadian wildfires have been the easy culprit to blame for the poor air quality, the real root of the problem goes much deeper….climate change.

Wayne State University Center for Urban Studies Director Lyke Thompson further dives into what is causing poor quality in Southeast Michigan in this recent opinion piece published by the Detroit Free Press.