making it challenging for firefighters working to put out a 7-alarm fire just outside the city on tuesday. in portland, after three days of triple digit temperatures peaking at 116 degrees monday, the fire and rescue department announced fireworks will be banned indefinitely ahead of the holiday weekend. heat-related illnesses sending hundreds of people to local emergency rooms and urgent care clinics. they are very busy. they have been distributing patients and working to make more room in the hospitals to help with some of the logjams. reporter: and in seattle a new record high of 108 degrees monday. the extreme weather wreaking havoc on washington s roads causing some to crack and buckle. it s scary. i mean, you never know when you could be the one who falls into it, a sinkhole. reporter: in new york city, as temperatures hit the high 90s, air cool ditioning service crews are working around the clock to install and fix units.