chris clackham has that story. >> reporter: another day of scorching temperatures and another run on air-conditioners. >> i need a little help top help me cool off the living room a little bit. that's where we spend our time. >> reporter: time better spent there than outdoors like in washington where it was dangerously hot again thursday. >> those who can't protect themselves from the heat like the very young or old are the people the most common victims of heat. >> it's been a week's worth of 90 plus heat in the new york city area. heat indices approach 100 this afternoon. but many residents are taking it in stride. >> i told myself i'm not going to complain about the heat because of the cold winters. >> reporter: is the heat's coming from a large dome of high pressure in the upper atmosphere that's located over the ohio valley, great lakes and northeast and has made the playground equipment in quincy, illinois, unbarely hot. >> mid to upper 170s. >> vendors at the farmer's market in devin port, iowa have been forced to put produce on rice. >> i just pick it fresh and bring it, keep