The Heat is On

Millions of people across central and eastern US under 'heat dome'
warning

Temperatures at or above 100F expected as extreme hot air and humidity
are trapped in atmosphere

Scores of millions of people across the central and eastern US will
swelter under the summer's first "heat dome" beginning this weekend
and extending through the end of next week as extreme hot air and
humidity get trapped in the atmosphere.

The arrival of the heatwave coincides with Friday's first day of
summer and will bring temperatures at or above 100F (37.7C) to
numerous cities as it moves to the east of the US in the coming days,
forecasters say.

https://www.theguardian.com/us-news/2025/jun/20/heat-dome-warning-central-eastern-us