Southern California is currently experiencing a significant heatwave expected to peak between Thursday and Friday, with temperatures soaring above 100 degrees in many areas, including the San Fernando Valley and Coachella Valley. Various regions, including Los Angeles, San Diego, and the Inland Empire, are facing excessive heat warnings and elevated wildfire risks due to the hot, dry conditions. Coastal areas will be slightly cooler but still warm, with highs in the 70s and 80s. Cooling centers have been opened in Los Angeles to help residents cope with the heat. Northwest Oregon and southwest Washington are also enduring a heatwave, with temperatures forecasted to reach the mid to upper 90s over the weekend. Relief is expected in some areas by early next week, with cooler temperatures and possible showers on the horizon.