The Michigan Department of Environmental Quality has declared Wednesday an action day for elevated levels of ozone.

Pollutants are expected to be in the unhealthy range for sensitive groups.

This is the fifth air quality alert for Washtenaw County so far this year, with other recent ones occurring on Friday and Saturday.

The action day is in effect for the following Michigan counties: Lenawee, Livingston, Macomb, Monroe, Oakland, St Clair, Washtenaw and Wayne.

People and businesses are urged to avoid activities that lead to ozone formation. These activities include refueling vehicles or topping off when refueling, using gasoline-powered lawn equipment and using charcoal lighter fluid. Positive activities include car pooling, biking to work, delaying or combining errands and using water-based paints.

It is recommended that active children and adults and people with respiratory diseases such as asthma limit prolonged outdoor exertion.

Wednesday is the first official day of summer. High temperatures in the 90s are expected today and Wednesday.

For updated weather conditions anytime, visit AnnArbor.com's weather page.

See more information on air quality at the DEQ's website.