An air quality alert covering the entire state of Minnesota continues on Thursday, marring otherwise fairly ideal weather conditions.

Although it is recommended to hunker inside during these stretches, experts say indoor air quality can often be just as bad, if not worse, than outdoor air quality.

Last week, Canadian wildfire smoke blanketed Wisconsin and caused the Air Quality Index to reach the unhealthy level for sensitive groups. Six days later, on July 31, the smoke appears to have a worse impact on the air.