Pacific map
See where the Pacific is warmer or cooler than usual.
The map marks Niño 3.4, the part of the tropical Pacific scientists watch most closely for El Niño and La Niña.
See what’s happening in the Pacific
See whether the Pacific is warming.
Live NOAA data shows whether the tropical Pacific is warming, cooling, or still uncertain.
- Live public NOAA data
- Current picture, not a forecast
- No account needed
Start here
The four things you want to know.
- Pacific nowWarming, cooling, or uncertain
- Signal strengthHow clearly the signs agree
- Recent changeBuilding or fading
- What to watchThe next sign that matters
Trusted across the World
Get your instance
Sea temperature anomaly · °C
- ≤ −2
- −2 to −1
- −1 to −0.5
- −0.5 to +0.5
- +0.5 to +1
- +1 to +2
- ≥ +2
Real El Niño users, mapped from App Store data
Ocean data: NOAA PSL OISST v2.1 · Land data: Natural Earth
Inside the app
The answer first. The details when you want them.
The Today screen starts with a simple summary. Open the maps, charts, past events, or source details when you want to see why.
Changes over time
See whether the pattern is growing or fading.
Weekly and monthly charts show how ocean temperatures are changing and whether the air and winds above the Pacific are changing too.
Past events
Compare today with completed events.
See which completed El Niño events look most like today, then compare how temperatures changed before and after their peak. Similarity adds context; it does not predict what happens next.
ENSO Signal Score
One score for how clear the pattern is.
ENSO is the name for the Pacific cycle that includes El Niño and La Niña. The 0–100 ENSO Signal Score combines ocean temperatures with changes in the air above the Pacific. A higher score means the signs agree more clearly; it does not mean El Niño is certain.
0–49Too early
50–64Early
65–79Watch
80–100Strong
El Niño for iPhone
See what the Pacific is doing today.
Get the current picture, maps, charts, past events, widgets, and updates you can share.