The Minnesota Pollution Control Agency  has issued an air pollution health advisory for the southern two-thirds of Minnesota, including Rochester,  Friday through midday Saturday, March 9th.          
Fine particle pollution is increasing across the southern two-thirds of the state. 

Today, early morning fog, high pressure, and light southerly winds are expected to reduce air quality to a level considered unhealthy for sensitive groups.

These conditions are expected to persist until midday Saturday, when increased wind speeds are expected to improve air quality conditions.

Individuals with cardiovascular or respiratory conditions, the elderly, children, and individuals who participate in vigorous or extended activity may be affected by air quality