Arrival of Canadian High pressure to push the hot, humid air well to the south of Chicago. 

FORECAST temperature departures from normal through the coming weekend into early next week:

Canada is experiencing its worst wildfire season on record with thousands of people being evacuated. Heat and drought conditions have contributed to the unprecedented fire season in Canada that have been burning since April.

Canadian wildfire smoke drifting into the U.S. has led to a spike in asthma ER visits. CONTINUE READING