Cooling stations have been set up to shelter the homeless and elderly people who cannot afford to run their air conditioners, as a potentially dangerous heatwave blistered parts of western US.
In California, Nevada and Arizona, air-conditioned "cooling centres" were set up in community centres, homeless shelters and libraries, and officials warned residents to avoid prolonged exposure to the searing temperatures.
In Phoenix, emergency shelters are temporarily adding 150 beds in an effort to safeguard hundreds of homeless.
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Thousands of demonstrators have marched through Boston in opposition to a right-wing rally in the city which was eventually cut short.
Some 1,000 counter-protesters blocked 500 neo-Nazi demonstrators as they tried to march to the site of the death of Hitler ally Rudolf Hess.
Clear skies and lighter winds will bring a chilly night for many