Readings · this hour

The hour, counted

1.48 degrees Celsius, global mean anomaly versus 1880 to 1900.

1.48°

°C anomaly

Global mean vs 1880–1900, trailing 12 months

427 parts per million carbon dioxide.

427

ppm CO2

Flask network, last complete hour

21.6 centimetres of mean sea-level rise since 1900.

21.6

cm sea level

Mean rise since 1900, altimeter + tide

3,842 stations reporting this hour.

3,842

stations

Reporting this hour, quality flag 1–2