ozone

Health and environmental groups are joining a Sierra Club lawsuit claiming the U.S. Environmental Protection Agency wrongly found that southeast Michigan now meets federal ozone standards.

In May, the EPA found that a seven-county region in southeast Michigan had officially come into attainment with federal ozone standards. But they were only able to do that after discounting some data from Detroit in August 2022. The Sierra Club is disputing both findings.

The Michigan Department of Environment, Great Lakes, and Energy says ozone levels in Metro Detroit have declined significantly since the 1990s.

DTE Energy and state regulators have asked the Court of Appeals to reconsider a decision affecting a permit for the utility's new gas plant.The company is…

Communities along the shore of Lake Michigan in Wisconsin and Michigan have been recording unusually high levels of ozone for years. On some days, these…

23 counties in Michigan have reported one or more unhealthy ozone days each year, on average. That’s from a new analysis by the Natural Resources Defense…

The quality of Michigan’s air continues to improve. That’s the finding of a new report out today.The American Lung Association’s annual State of the Air…

The U.S. Environmental Protection Agency is proposing to lower the allowed level of ozone from 75 to 65 to 70 parts per billion.Ozone is a dangerous…

Air quality is getting better in Michigan, according to a new report from the American Lung Association. The association’s annual ‘State of the Air’…

Ozone way up in the atmosphere... good. Ozone near the ground... bad. SEMCOG (Southeast Michigan Council of Governments) says the air outside could be…