An air quality alert will be in effect across all of Minnesota until at least 11 p.m. July 25, according to the state Pollution Control Agency.

The Canadian wildfire smoke that covered northwest Wisconsin July 24 has moved south and is causing air quality problems in most of the state.

"A lot of the prairies within Canada, the prairie provinces, entered the fire season already starting out in a drought, and so there wasn't a lot of moisture throughout the winter," said Alex Jones a communications manager at the Canadian Interagency Forest Fire Center.