The MPCA says that sensitive groups should avoid prolonged or heavy exertion, and everyone should limit their time spent outdoors.

The Minnesota Pollution Control Agency (MPCA) has issued an AIR QUALITY ALERT for all of Minnesota until late Saturday afternoon. Meanwhile, the Iowa DNR has issued an AIR QUALITY ALERT for all of Iowa through Friday night.

Data suggests that air quality in Minneapolis ranked worse than the air in Egypt, South Korea and China. Minneapolis has the fifth worst air quality in the world, according to an air quality monitoring platform that reported its latest findings Saturday.