ozone

SEMCOG

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 chemical that forms when sunlight and heat interact with emissions from cars, factories, and power plants.

"Even going to 70 (ppb) will be a monumental challenge for us in the region," says Joan Weidner of the Southeast Michigan Council of Governments (SEMCOG). 

SEMCOG is the group which monitors ozone levels and coordinates actions to reduce ozone. 

(Flickr Senor Codo)

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’ report says ozone and particle pollution rates have eased in Michigan during the past decade.    Lansing and Saginaw have some of the cleanest air among U.S. cities.  

Shelly Kiser is with the American Lung Association.     She says the report’s not all good news. 

Air pollution around a highway in downtown Los Angeles
Ali Azimi / Creative Commons

Ozone way up in the atmosphere... good. Ozone near the ground... bad. 

SEMCOG (Southeast Michigan Council of Governments) says the air outside could be unhealthy today.  The group says "elements have been in place for a few days now – sunny skies, hot temperatures, and southerly winds. Admittedly this is beautiful weather, but the ongoing nature of these conditions is compromising our air quality and enabling ground-level ozone to remain high."