This year’s heat death toll for Southern Nevada rose to 46 on Thursday, a day after the Clark County coroner’s office released a spreadsheet that listed 29 heat-related deaths. Members of Southern Nevada Health District’s Street Medicine team call out to unhoused people while delivering resources for combating heat related health issues, on Monday, July 6, 2026, in Las Vegas. (Marley Barboeisel/Las Vegas Review-Journal) @marbo.filmMembers of Southern Nevada Health District’s Street Medicine team call out to unhoused people while delivering resources on July 6, 2026, in Las Vegas. (Marley Barboeisel/Las Vegas Review-Journal) @marbo.filmThis year’s heat death toll for Southern Nevada rose to 46 on Thursday, a day after the Clark County coroner’s office released a spreadsheet that listed 29 heat-related deaths. The coroner’s office broadened its criteria in 2021 for determining when heat should be considered during a death investigation, and temperatures above 95 degrees are generally when investigators will consider heat illness.