2025 Third-Warmest Year on Record: Five Agencies Confirm ~1.45°C Above Pre-Industrial Baseline
Five independent scientific agencies — Copernicus/ECMWF, NASA, NOAA, Berkeley Earth, and the World Meteorological Organization — each confirmed that 2025 was the third-warmest year in the global instrumental record. Annual average temperatures ranged from 1.43°C to 1.47°C above the 1850–1900 pre-industrial baseline across all datasets, a band of agreement narrower than 0.05°C. 2025 and 2023 are statistically tied in most analyses; 2024 remains the warmest year on record at 1.60°C. The 2023–2025 three-year average also exceeded 1.5°C above pre-industrial levels for the first time in the observational record.
claim: 2025 ranked as the third-warmest year in the global instrumental record, with annual average temperatures approximately 1.45°C above pre-industrial levels (1850–1900 baseline), confirmed independently by five major scientific monitoring agencies.
Sources · prominence score
Evidence Quality
Tier Mix
Pipeline Warnings
- insufficient_candidatesAlgox:topK · 5/6
- ephemeral_signing_keyResearchProtocolAdapter · UVRN_EXPANSE_PRODUCER_PRIVATE_KEY not set — signed with a one-time ephemeral key
Findings
- 2025 was the third-warmest year in the global instrumental record per NOAA, Copernicus, Berkeley Earth, and WMO; NASA ranks it tied for second with 2023 within measurement uncertainty.
- All five agencies measured 2025 annual temperatures within a 0.04°C band (1.43–1.47°C above the 1850–1900 pre-industrial baseline), the tightest multi-agency agreement in recent memory.
- The 2023–2025 three-year average exceeded 1.5°C above pre-industrial levels for the first time in recorded history, a threshold set by the 2015 Paris Agreement.
- The 11 warmest years on record have all occurred since 2015, with 2024, 2023, and 2025 occupying the top three positions across every major dataset.
- No region on Earth recorded a locally record-cold annual average in 2025 (Berkeley Earth); roughly 9% of Earth's surface set locally record-warm annual averages.
Climate risk analysts, sustainability officers, and policy teams use UVRN to independently verify that scientific consensus on annual temperature benchmarks is genuine — not manufactured by a single agency — before citing figures in regulatory filings, investor disclosures, or public reports.
- Run ID
- run-097
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- [email protected]