A severe heatwave is impacting various regions across the United States, with record-breaking temperatures and heat advisories in effect. In Alabama, temperatures are expected to soar into the mid-90s, exacerbated by high pressure and limited rain chances. North Texas is under a heat advisory with temperatures nearing 100 degrees and an air quality alert in place. Similarly, Houston and Central Texas are experiencing extreme heat, with highs reaching the upper 90s and 100s. Lubbock, Texas, faces temperatures above 100 degrees, breaking multiple daily records. Relief is expected in some areas like Denver, where temperatures are forecasted to cool by Thursday.