Global temperature in the 1900s

Decade average−0.32°C1951–1980

vs previous decade−0.08°C

Warmest year1900−0.09°C

CO₂ average–Mauna Loa

Each year

1900−0.09°C

1901−0.16°C

1902−0.29°C

1903−0.38°C

1904−0.48°C

1905−0.27°C

1906−0.23°C

1907−0.39°C

1908−0.43°C

1909−0.49°C

Year	Global	NH	SH	Rank
1900	−0.09°C	−0.09°C	−0.07°C	82
1901	−0.16°C	−0.12°C	−0.19°C	98
1902	−0.29°C	−0.34°C	−0.23°C	125
1903	−0.38°C	−0.38°C	−0.37°C	139
1904	−0.48°C	−0.49°C	−0.47°C	145
1905	−0.27°C	−0.29°C	−0.24°C	117
1906	−0.23°C	−0.23°C	−0.22°C	116
1907	−0.39°C	−0.47°C	−0.31°C	140
1908	−0.43°C	−0.46°C	−0.41°C	141
1909	−0.49°C	−0.50°C	−0.49°C	146

1880s−0.22°C

1890s−0.24°C

1900s ◀−0.32°C

1910s−0.34°C

1920s−0.24°C

1930s−0.12°C

1940s+0.04°C

1950s−0.05°C

1960s−0.03°C

1970s+0.03°C

1980s+0.25°C

1990s+0.39°C

2000s+0.59°C

2010s+0.81°C

2020s+1.07°C

Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.