El Niño Status Maps
El Niño is a disruption of the ocean-atmosphere system in the Tropical Pacific having important consequences for weather and climate around the globe. El Niño is characterized by unusually warm temperatures and La Niña by unusually cool temperatures in the equatorial Pacific. Anomalies represent deviations from normal temperature values, with unusually warm temperatures shown in red and unusually cold anomalies shown in blue.
Sea surface temperature in the equatorial Pacific Ocean...
Status (PDF - updated second Thursday of each month)
What is El Niño
What is La Niña