4 Billion Years On

Climate Helix

A radial year-on-year temperature dial. Each loop is one year, the colour gradient encodes the long-term warming trend, the global helix includes dotted Paris 1.5°C and 2°C reference rings, and an optional ENSO heads-up highlights El Niño and La Niña years. Search or browse to load any region’s helix below.

The 4BYO Climate Helix – Global Land + Ocean

1950202619611990 baselineColdest (1964)20162025 meanWarmest (2024)2026 so far
2026
2024
Paris +1.5°CParis +2°C13.5°14°14.5°15°JanFebMarAprMayJunJulAugSepOctNovDec
Temp
15.1 °C
+1.0° vs base
CO2
430 ppm
Annual mean
Sea level
84 mm
Sat mean
Sea ice
18 Mkm²
Global mean
ENSO
ONI 3-mo mean
Playback
8×
Mode
Metric
Presets

NOAA Climate at a Glance — Global Land+Ocean · Paris rings vs global 1850–1900 mean (13.5°C).

Records – Global Temperature

Temperature
Warmest year
2024
15.2°C
Coldest year
1964
13.7°C
2026 so far
#5of 77
15.1°C

NOAA Climate at a Glance — Global Land+Ocean