A high of 93-degrees in the Twin Cities Wednesday triggered heat and air-quality warnings, but the metro wasn't the only area to feel the heat: The National Weather Service also issued heat advisories for southern Minnesota and western Wisconsin.

Bad air will be part of the midweek heat wave that's settling over Minnesota. An elevated ozone level has prompted the Minnesota Pollution Control Agency to issue a health advisory through Wednesday night for the Twin Cities and Rochester.

The American Lung Association released its "State of the Air" report Wednesday and has given Ramsey County an "F" for "short-term particle pollution." That's down from a "B'' in 2009, a "C" in 2010 and a "D'' in 2011. Overall, Minnesota earned better grades for "high ozone days," but lower grades for "high particle pollution days."

The heat apparently has little to do with the increase in air conditioner thefts in the metro area this spring. WCCO-TV reports that AC units are being looted for the copper and aluminum components contained within. Since Jan. 1, more than 100 units have been reported stolen, with more than 15 looted in May alone.

Health officials want to be generous with the bug spray during the heat wave that's settling over Minnesota. Late summer heat creates ideal conditions for the mosquitoes that carry West Nile Virus. In the Twin Cities, the mosquito control district is chemically treating 77,000 storm drains.