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PHILADELPHIA — <\/span>The eastern U.S. sweated through a second day of early-season heat Wednesday, with some schoolchildren being sent home while others stayed in sweltering classrooms.<\/p>\n The Philadelphia school district shifted to remote learning for students at 57 schools, saying that while it has made progress, a number of schools continue to have inadequate air conditioning.<\/p>\n The National Weather Service said another day of record heat was expected from the mid-Atlantic to New England before a cold front brings rain later in the week. Daily high temperature records were broken Tuesday in Portland, Maine, at 92 degrees Fahrenheit (33 degrees Celsius) and Boston, at 96 degrees (35.5 degrees Celsius).<\/p>\n In Boston\u2019s Dorchester neighborhood, officials at one high school set up fans, passed around bottled water and allowed students to wear shorts and T-shirts instead of their usual uniforms.<\/p>\n \u201cThe heat outside feels like it\u2019s manageable because of the wind but inside it feels just tight and burdening because we also have to go through quizzes, exams, there is no excuse,\u201d student Ariolainy Baez told CBS News.<\/p>\n A heat advisory was in effect for portions of New York, New Jersey, Pennsylvania, Connecticut, Massachusetts and Rhode Island through Wednesday evening.<\/p>\n In New York City, city officials opened cooling centers to help residents find relief.<\/p>\n \u201cJust as New Yorkers look out for one another through the coldest days of winter, we must do the same through the hottest days of the year,\u201d Mayor Zohran Mamdani said.<\/p>\n ____<\/p>\n Associated Press writer Holly Ramer contributed from Concord, New Hampshire.<\/p>\n<\/div>\n