A significant heatwave continues to impact various regions across the U.S. with record-breaking temperatures. In North Texas, temperatures are expected to reach near 97 degrees with an air quality alert in effect due to high ozone levels. Phoenix is experiencing record highs of 117 degrees with an Excessive Heat Warning until Friday evening. The Treasure Valley is also under an excessive heat warning, with temperatures peaking between 105-109 degrees. Billings and surrounding regions are facing extreme heat with the potential for wildfire smoke. Las Vegas has already broken records with temperatures hitting 119 degrees and could see more records fall in the coming days, while the Central Plains and South Texas are preparing for the heat dome to move in next week, bringing triple-digit temperatures and Saharan dust.