El Niño conditions are strengthening across the tropical Pacific, with SST anomalies in the Niño 3.4 region showing a steady upward trend. The observed SST anomaly reached +0.48 °C during March–May 2026 and increased to +0.94 °C in May 2026. The latest weekly Niño 3.4 index, centered on June 17, 2026, climbed further to +1.7 °C. Together, these observations indicate that Pacific Ocean conditions have transitioned into El Niño conditions and are continuing to intensify toward a moderate-strength El Niño event.