More than 400 people are suspected to have died from extreme heat in Maricopa county, Arizona, so far this summer, according to official figures, as the brutal current heatwave enters its 12th day.
August is on track to be the hottest on record, with temperatures hitting at least 110F (43C) every day apart from one so far. As of 11 August, at least three daily records had been broken including an all-time monthly high of 118F (48C), as well as several night-time record temperatures, according to Isaac Smith, meteorologist at the National Weather Service (NWS) in Phoenix.
