CPS students ordered to stay indoors during extreme heat warning

All outdoor activities for Chicago Public Schools students have been canceled or will be held inside if possible due to the extreme and dangerous heat Wednesday, according to a letter addressed to families. The order, which was put in effect due to the National Weather Service's heat advisory, includes outdoor recess, physical education, athletics and out-of-school time activities, according to the letter. The heat advisory remains in force until 9 p.m., according to the NWS. The letter…