Air quality alerts have resurfaced in Wisconsin, with some areas experiencing the smoky air from Canadian wildfires.
Health and environmental experts say there are key things to know now, and when the patterns re-emerge in future warm seasons. The occasional smoky haze this summer has captured the spotlight as forecasters link the conditions to climate change.
Dr. William Ehlenbach, associate medical director for pulmonary and sleep medicine at St. Mary's Hospital in Madison, said when the wind pushes smoky air down to Wisconsin, it brings along tiny inhalable particles, and on bad days, it can cause health issues.
"People who have chronic lung disease, particularly diseases like asthma, often have worsened respiratory symptoms when particulate matter is really high, when the air quality is poor," Ehlenbach explained.
He noted the particles can get into your bloodstream, potentially affecting cardiovascular health. The American Heart Association said smoky conditions raise the risk of out-of-hospital cardiac arrests by up to 70%.
Limiting time outdoors and keeping an N-95 mask handy are among the precautions. Adding air quality apps to your phone and monitoring the index are also encouraged.
Tracey Holloway, professor of environmental studies and atmospheric and oceanic sciences at the University of Wisconsin-Madison and a member of the group Science Moms, cited dryer and hotter conditions for what is happening in Canada. Consistent smoky air might not come around every summer, but she added the direct effects of climate change are here, and people should be ready to adapt.
"Just like some years we'll have more snow, moving into the future there'll be some years that have more smoke, and some years that have less smoke," Holloway pointed out. "People's perception of what regular summer looks like may change, and may affect how people want to prepare."
Beyond other precautions, she emphasized enhancing the air filtration in your home is a good defense.
Holloway added even healthy populations can experience symptoms like itchy eyes. Meanwhile, she argued people can try to help reverse future weather patterns through the decisions they make today.
"Electric vehicles or cleaner electricity sources, and you know, moving away from fossil fuels; this is a win-win," Holloway contended. "Because it makes our air cleaner today, and it is combating climate change over the next few decades."
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Under the federal Clean Air Act, Kentucky is required to keep haze air pollution under control in Mammoth Cave National Park.
Critics said the state's current plan falls short. Coal-fired power plants are the driving cause of air pollution impairing visibility in the Commonwealth, according to the National Parks Conservation Association.
Ashley Wilmes, executive director of the Kentucky Resources Council, said the state's current Draft Regional Haze State Implementation Plan only considers two facilities as significant pollution emitters, despite evidence there are more.
"There has to be a detailed analysis of additional major polluters in Kentucky that are contributing to this haze," Wilmes asserted. "They did not do this analysis for other major coal plants, including Ghent and Mill Creek, Trimble Station and others."
The Kentucky Energy and Environment Cabinet hears virtual public comments on the plan tomorrow at 10 a.m. ET.
Ulla Reeves, clean air program director for the National Parks Conservation Association, said several major polluters in the region are contributing to poor air quality.
"We see in Kentucky that Mammoth Cave is actually one of the most polluted national parks in the entire country," Reeves pointed out. "It is surrounded by polluting facilities."
Bryon Gary, program attorney for the council, said advocates are asking the state to include additional pollutants and facilities, and address environmental justice impacts to surrounding communities. He added residents' input will be considered by the Environmental Protection Agency.
"The public will have the opportunity to give those comments," Gary noted. "Then at some later point, the Energy Environment Cabinet will develop a written response to comments that will be submitted to EPA, along with their final state implementation plan."
Exposure to the air pollution particles triggering haze can cause breathing problems, lung cancer, heart attacks and low birth weight in newborn babies, according to the Centers for Disease Control and Prevention.
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California air-quality regulators today are expected to adopt new fees for big polluters and rules to encourage large buildings to switch equipment from gas to zero-emission electric models.
Fifteen clean-air advocacy groups are rallying in front of the Southern California Air Quality Management Board in Diamond Bar today, urging passage of the new rules.
Kimberly Orbe, senior conservation program manager for the Sierra Club's Angeles chapter, said the transition would cover gas-fired water heaters, boilers and process heaters.
"Fossil fuel appliances are responsible for 10% of the emissions from stationary sources in our region," she said, "so that's really huge."
Opponents of the change include SoCalGas and industry groups representing dry cleaners and restauranteurs.
When burned, natural gas emits harmful smog-forming air pollution and greenhouse gases that fuel climate change. The So Cal Air Quality Management District's new pollution fee program would require large industrial polluters to pay to support regional clean-air efforts. The Sierra Club estimates this could raise about $25 million a year.
According to the American Lung Association, the Los Angeles/Long Beach area has the most high-ozone days of any metropolitan area in the country. Orbe said that's why advocacy groups have been pressing for stronger air-quality standards for years.
"Our region is burdened by an overwhelming amount of pollution - from oil drilling, from refineries, from the ports, from the warehouses, freeways," she said. "So, we want to make sure that we're passing strong rules to ensure that we continue to clean up our air, year after year."
The board is also expected to set a hearing date to consider new rules requiring zero-emissions technologies in the rail yards to combat diesel pollution from trains.
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Leaders in Michigan are marking the historic new clean car standards, finalized by the Environmental Protection Agency.
The final rule, Multi-Pollutant Emissions Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles, was announced in March.
Michigan leaders are celebrating the move as a positive step in the fight against climate change.
State Rep. Jasper Martus, D-Flushing, said many people think of climate change and creating good jobs as two separate issues, but he said he believes the two go hand-in-hand.
"When we pursue policies that combat climate change, such as investing in electric vehicles, having higher standards for the vehicles that are produced here in Michigan and the United States," said Martus, "we can do it in such a way that creates good paying jobs."
The new standards will phase in over model years 2027 through 2032.
Martus said in addition to creating new jobs, the transition to electric vehicles will also decrease pain at the pump resulting from sky high gas prices.
He added he believes it's time for companies that make EVs to make their pitch to the public.
"We're not to the point now where everything is going to be electric vehicles overnight," said Martus. "We're not even at the point where everything could be a hybrid overnight. But we're beginning that process of these companies making electric vehicles need to make the pitch."
Martus added that as EV makers pitch their product, consumers will eventually see the prices of the vehicles come down - making them just as competitive, if not more so, than traditional vehicles.
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