hotter than usual, that may not be your maimagination. globally this past june, scientists say this was the warmest ever on record and there s no relief in sight. on the heels of a heat wave earlier this month that set records in parts of the country, americans are bracing for round two of what s becoming an especially steamy summer. sweaty. sweaty out. there s not one person who is not sweating now. reporter: temperatures well over 90 will be the norm for the nation. factor in the humidity and in many spots it will feel like the 100s. in atlantic city all bets were off, as mechanical problems left some casinos without air conditioning. there s no ice in the building that we know of so we re going to go down and beg for ice. reporter: but along lake shore drive in chicago, fitness fanatics were undeterred by the sweltering heat with temperatures hitting above 90 degrees and humidity at nearly 90% this week. forecasters say the heat is so intense, even in the deser