Heat wave: Dozens hospitalised as hot weather hits North America

150 people were sickened at outdoor graduation ceremonies in New Jersey due to the sweltering conditions.

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More than 150 people fell ill at an outdoor school graduation ceremony in Paterson, New Jersey on Monday, according to US media, as the city's mayor declared a state of emergency.

In Washington DC, six people needed hospital treatment during a concert by South Korean band 'Stray Kids', according to CBS News, the BBC's US news partner.

Heat warnings are in effect from the US Midwest to the East Coast, as well as in parts of Ontario, Quebec and Nova Scotia in Canada, impacting more than 160 million people through the week.

Further south along the US east coast, dozens in North Carolina sought treatment for heat-related injuries.