Heat tracker for the U.S.

<img width=“750” height=“436” src=“https://i0.wp.com/flowingdata.com/wp-content/uploads/2024/06/heat-index-forecast.png?fit=750%2C436&quality=80&ssl=1" class=“attachment-medium size-medium wp-post-image” alt=“” decoding=“async” srcset=“https://i0.wp.com/flowingdata.com/wp-content/uploads/2024/06/heat-index-forecast.png?w=1814&quality=80&ssl=1 1814w, https://i0.wp.com/flowingdata.com/wp-content/uploads/2024/06/heat-index-forecast.png?resize=750%2C436&quality=80&ssl=1 750w, https://i0.wp.com/flowing …