In pictures: Americans cool off in the heatwave
Temperatures in some US cities are dangerously high, with the East Coast particularly hard-hit.
The wonderful world of clouds
9th July 2019 Last updated at 14:55
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Light and fluffy or full and foreboding - clouds can change the sky-scape, Louise Lear looks at how they are formed and what weather they can bring.
Weather Videos
June 2019 was 'world's hottest on record'
The US National Oceanic and Atmospheric Administration says the average temperature was 61.6F (16.4C).
How do thunderstorms form?
What conditions do you need for a thunderstorm? Darren Bett explains.
Feeling hot?
Matt Taylor explains how the body reacts to high temperatures.
Heat eases in the USA
Thunderstorms and torrential rain across eastern states of the USA will bring some fresher and less humid conditions in the coming days.
Weather and pollen
How does the weather influence pollen levels? BBC Weather's Louise Lear explains.