Climate Change Statistics 2026

Temperature

2024 was the warmest year ever recorded and the first calendar year to exceed 1.5°C above pre-industrial levels. The Copernicus Climate Change Service estimated 1.55°C for 2024; NASA, NOAA, and the UK Met Office reached very similar figures. Ten of the warmest years on record have all occurred since 2015.

What this does not mean: the Paris Agreement's 1.5°C target has not been "breached" in the technical sense, which refers to a 20-year average. But the gap is shrinking fast — most climate scientists assess that crossing 1.5°C as a multi-decade average is now likely sometime in the early 2030s on current trajectories.

What's driving 2024's anomaly

• Persistent greenhouse gas accumulation (the dominant long-term driver)
• A strong El Niño that peaked in late 2023 / early 2024
• Lower-than-expected aerosol pollution (especially from sulfur reductions in shipping fuel) — paradoxically a long-term good that has a short-term warming side effect
• Unusually high ocean heat content — 2023 and 2024 broke ocean heat records

CO₂ emissions and concentration

The Global Carbon Project estimates 37.4 gigatonnes of CO₂ from fossil fuels in 2023, a record. Including land-use change, total CO₂ emissions reached about 40.6 GtCO₂. Growth has slowed — the 1% increase in 2023 is well below the ~3% annual growth of the 2000s — but emissions have not yet peaked.

By emitter (2023 fossil CO₂ approximate share):

• China — ~32% (the largest single national share)
• United States — ~12%
• European Union — ~7%
• India — ~8%
• Rest of world — ~41%

Atmospheric CO₂ concentration at NOAA's Mauna Loa observatory averaged ~424 ppm in 2024, roughly 50% above the pre-industrial level of 280 ppm. The 2024 annual growth was about 3.2 ppm — among the largest annual increases ever measured.

Methane and nitrous oxide

CO₂ gets most of the attention but other gases matter too:

• Methane (CH₄) — Roughly 1,925 ppb in 2024, more than 2.6× pre-industrial; about 30% of present-day human-caused warming. Major sources: livestock, fossil fuel operations, landfills.
• Nitrous oxide (N₂O) — Roughly 337 ppb; about 25% above pre-industrial. Major source: agricultural fertilizer.

Sea level rise

NASA's Sea Level Change Portal documents global mean sea level rise of about 420 mm (16 inches) since 1900. The current rate is ~4.6 mm per year (NASA satellite altimetry), more than 2× the 20th-century average and accelerating.

The IPCC's AR6 projects, by 2100:

• Under low emissions (SSP1-1.9, aligned with 1.5°C): 0.28–0.55 m of rise
• Under moderate emissions (SSP2-4.5): 0.44–0.76 m
• Under high emissions (SSP5-8.5): 0.63–1.01 m, with high-end scenarios including ice-sheet collapse processes adding meters

The long-term commitment is much larger — the IPCC notes that even at 2°C of warming, multi-century sea-level rise of roughly 2–6 meters is committed by the ice-sheet response.

Energy transition

The IEA's World Energy Investment 2024 found $1.77 trillion in global clean energy investment in 2023, roughly twice the $1.05 trillion in fossil fuel investment. Solar PV alone attracted $382 billion in 2023.

For electricity specifically (per Ember's Global Electricity Review):

• Renewables generated 30.3% of global electricity in 2023 — a record
• Hydropower remained the single largest renewable source (~14% of total)
• Wind generated ~7.8% of global electricity, solar ~5.5%
• Solar generation grew 23% year-over-year, wind ~10%
• Coal still generated about 35% of global electricity

Electric vehicle sales reached about 14 million globally in 2023, or roughly 18% of new car sales (IEA Global EV Outlook). China alone accounted for about 60% of global EV sales.

Disaster costs

NOAA's National Centers for Environmental Information count US weather and climate disasters causing at least $1 billion (CPI-adjusted). The 2023 total:

• 28 separate billion-dollar disasters — a record
• ~$400 billion in cumulative damages
• ~492 direct fatalities

2024 figures continued in the same range (28+ events). The 5-year average is now well above $100 billion per year in the US alone. Globally, Munich Re estimated about $250 billion in insured + uninsured natural-catastrophe losses in 2023, with weather-driven events the largest share.

The Paris Agreement gap

The UNEP Emissions Gap Report 2024 is blunt: on currently implemented policies, the world is on track for roughly 2.5–2.9°C of warming by 2100. To stay below 1.5°C, global emissions would need to fall about 43% by 2030 versus 2019 — and they are currently flat-to-rising.

That said, the trajectory has improved meaningfully. Pre-Paris (2015) forecasts pointed toward 3.5–4.0°C; major policy and clean-energy cost shifts have cut the expected end-of-century warming by roughly 1°C. The remaining gap is real but smaller than it was a decade ago.

Related explainers

• What Is Climate Change? — the canonical definition
• Science explainers
• Geography — physical context
• Engineering — energy systems