A heatwave has hit large parts of the US Pacific Northwest and Canada, sending records tumbling.
The US National Weather Service has issued heat warnings for much of Washington and Oregon states. Parts of California and Idaho are also affected.
On Saturday temperatures in Seattle, Washington State, reached a 101F (38C), a record in the city for June.
Some cities have opened cooling centres, where residents can escape the heat in air-conditioned buildings.
The soaring temperatures are due to a dome of high pressure hovering over north-western United States and Canada.
Experts say climate change is expected to increase the frequency of extreme weather events, such as heatwaves, however linking any single event to global warming is complicated.
As the climate changes, there could be an increase in the number of deaths from floods, storms and heatwaves, experts say.
The National Weather Service (NWS) said that even hotter temperatures were forecast for the coming days throughout the Pacific Northwest as well as parts of western Nevada and California.
Despite the warnings many people have been enjoying the sunshine, with lakes busy and pools running at full capacity.