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Global Temperature Over the Long Run
Trailing 365-day mean of the daily global temperature anomaly against 1991–2020, °C
Plays the chart through its history. Pauses are where the data set a record or moved most.
Palanor calculation from Copernicus Climate Change Service ERA5 data (contains modified Copernicus Climate Change Service information; neither the European Commission nor ECMWF is responsible for any use made of it). Early decades rest on far fewer observations.
Eight decades of global temperature from the ERA5 reanalysis, smoothed to a rolling year, against the 1991–2020 normal.
What this chart reads
- Global Temperature Anomaly, Trailing 365-Day Mean (ERA5) · °Cas “Trailing 365-day mean”latest 2026-10-20
Sources
Global Temperature Anomaly, Trailing 365-Day Mean (ERA5) · °C. Source: Palanor calculation (src/lib/climate/era5-pulse.ts) from Copernicus Climate Change Service (C3S) / ECMWF, Climate Pulse, ERA5 daily global series: https://pulse.climate.copernicus.eu (file https://sites.ecmwf.int/data/climatepulse/data/series/era5_daily_series_2t_global.csv). Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains. Licence to Use Copernicus Products (version 1.2), §4.2: "Access to Copernicus Products is given for any purpose in so far as it is lawful". Read daily.
Charts are drawn from Palanor's signal library and recomputed from source data on every view. Transformations (changes, indexing, year-on-year rates) are Palanor's.