The Altcoin Season Index (ASI) has surged to 80, marking the third consecutive day of altcoin season, according to blockchaincenter.net. This development has generated excitement among crypto enthusiasts, with social media abuzz with discussions. The ASI last reached similar levels in December of the previous year. Despite the current enthusiasm, skepticism persists as some analysts suggest this altcoin season may be short-lived, potentially lasting only five days. As of September 13, 2025, the ASI remains at 80, while the monthly score is at 88, indicating that 75% of the top 50 altcoins have outperformed Bitcoin over the past 90 days. However, the 12-month reading is significantly lower at 35, highlighting concerns about the long-term sustainability of this trend.