A man died and another was in hospital is a serious condition as a heatwave has blistered parts of the US.
Forecasters said temperatures in Las Vegas shot up to 46 C (11 F) yesterday, two degrees short of the city's all-time record.
Phoenix hit 48.3C (119F) by mid-afternoon, breaking the record for June 29 that was set in 1994. And large areas of California sweltered under extreme heat warnings, which are expected to last into Tuesday night.
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The woman had passed out on the motorway while her baby sat in the back seat.
Samantha Jefferies and husband Clive had been undergoing fertility treatment when he died suddenly, aged 51, of a brain haemorrhage.
Met Office issue warning as 70mph winds set to hit the Northwest in next 24 hours.