Cooler temperatures have helped firefighting teams gain control over major blazes throughout southwestern Europe and the UK.
Temperatures may remain above normal into the middle of next week, the World Meteorological Organisation says, warning that such events could occur with greater frequency in the future.
The Met Office says "substantial" changes in working practices and daily routines will be required and there is a high risk of failure of heat-sensitive systems and equipment.
Nearly half a million Indians have fled their homes as one of the world's largest rivers, the Brahmaputra, burst its banks in the country's northeast.
Italy saw temperatures in places upwards of 40°C, and Rome broiled. By late afternoon Friday, the heat in Florence reached 39°C. That city and Bologna also were issued alerts for Saturday by the health ministry.
Firefighters are struggling to contain exploding Northern California wildfires under blazing temperatures as another heatwave hits western US this weekend.
At least 174 fires burning in western province of British Columbia, 78 of them sparked in last two days, officials say.
Hundreds of residents have been evacuated in Canada's town of Lytton amid continuing heat wave, which experts say was brought on by the global climate change crisis and caused several hundred deaths in Canada and the US.
The intervention of a concerned journalist has helped some seniors trapped in hot, poorly ventilated housing, but what lies ahead for thousands more in similar conditions?
Chief coroner in Canada's British Columbia province says they've received reports of at least 486 “sudden and unexpected deaths” between Friday and Wednesday.
At least 70 people, most of whom were elderly or had underlying health conditions, lost their lives in Vancouver, Canada amid extreme heat.
As heatwaves and drought become more drawn out, the damage they cause to health, ecosystems, agriculture and the economy grows "significantly", scientists warn.
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