Eastern US swelters from heatwave as high temperatures affect half of country

<p>Heat and humidity are stretching east from the Mississippi River valley, and some areas could see heat indices of 120F</p><p>The eastern half of the US is facing a significant heatwave, with more than 185 million people <a href="https://www.weather.gov/?ftag=YHF4eb9d17">under warnings</a> due to intense and widespread heat conditions on Monday.</p><p>The south-east is likely to endure the most dangerous temperatures as the extreme heat spread across the region on Monday, spanning from the Carolinas through <a href="https://www.theguardian.com/us-news/florida">Florida</a>. In these areas, heat index values (how hot it feels once humidity is accounted for) are forecast to range between 105 and 113F (40.5 to 45C).</p> <a href="https://www.theguardian.com/us-news/2025/jul/28/us-weather-heatwave-temperatures-east">Continue reading...</a>