Many parts of the United States are experiencing higher than normal temperatures — like most of the Midwest — but the Philadelphia area is slated to be the hardest hit in the Northeast. "The multiple days of excessive heat will greatly affect those who are attending outdoor activities, especially events with large groups of people that are gathering in the direct sun," the weather service said. Will Adams, 69, of Pennsauken, New Jersey, stood next to a gigantic air conditioner under tents being erected outside the Comcast Center for a DNC event. Chris O'Brien, 36, of Flourtown, Pennsylvania, stood by a spray park — a public water play site — rocking his 2-month-old, Maeve, who was sleeping under the shade of a towel. Avere Scurry, 21, sitting behind the cash register at a pop-up beer garden across near the Philadelphia Museum of Art and its famed "Rocky" steps, said staff members were taking precautions in the heat.