MILWAUKEE (CBS 58) -- Even though we can't see smoke or even smell smoke, the particles from the Canadian wildfires are present in southeast Wisconsin. The World Air Quality Index (AQI) in Milwaukee was sitting at 151 Friday morning -- third after Delhi, India, and South Korea.
Poor air quality can affect the voices of Summerfest artists and the fans singing along.
Milwaukee-based traveling music teacher, Coltyn Vondeylen says the AQI being above 50 is unfavorable conditions for singers to perform in.
"It's similar to someone walking outside when someone smokes and just breathing in second had smoke for a bit," said Vondeylen. "It becomes difficult to produce a good quality tone it becomes harder to hit notes in your range and it's hard to breathe."
As for how long this unhealthy air quality will stick around? It's a waiting game.
Keep track of AQI HERE.