New York was hit with a real sizzler of a summer day Saturday as temperatures soared to a stifling 96 degrees. The culprit behind the wave of hot weather was a strange meteorological event dubbed a "heat dome." The "dome" occurs when "high pressure in the upper atmosphere acts as a lid, preventing hot air from escaping," according to the National Oceanic and Atmospheric Administration. The steamy scorcher sent people scampering to city beaches, pools, and cooling centers, trying to find any way to beat the heat. City emergency management officials said city pools would be open until 8 p.m. on Saturday and residents can call 311 to find the nearest cooling center. The heat wave, with temperatures exceeding 90 degrees, is expected to last through midweek. The National Weather Service issued an excessive heat watch for Monday, as heat index values are expected to reach 105 degrees.