Global surface temperature data displayed in a newly shared climate chart show that temperatures in 2026 have continued to remain substantially above the pre-industrial reference level, highlighting the persistence of unusually warm conditions around the planet.

The chart, shared by mathematician and climate commentator Prof. Eliot Jacobson, compares daily global 2-metre surface temperature anomalies from 1940 through 2026 against a pre-industrial baseline associated with the period around 1850.

According to the graphic, the 2026 record is shown in red and extends through August 24, 2026. Much of the year has remained at elevated anomaly levels compared with the pre-industrial reference line.

What the Temperature Anomaly Shows

A temperature anomaly measures how much warmer or cooler conditions are compared with a selected reference period. In the chart, the green horizontal line represents the pre-industrial baseline, while the numerous historical lines illustrate temperature variations recorded across different years.

The 2026 line remains well above that baseline throughout much of the period displayed. The chart also shows considerable year-to-year variability, with some historical years reaching exceptionally high or low levels at different points of the calendar.

The visualization therefore provides a daily comparison rather than simply showing one annual global temperature figure.

Why 2026 Temperature Trends Matter

Persistent temperatures above the pre-industrial baseline are important because long-term global warming is closely connected with changes in Earth’s climate system. Rising temperatures can influence heatwaves, rainfall patterns, drought conditions, sea levels and other climate-related risks.

However, a single year’s position on a temperature chart should not be interpreted as proof of a new long-term climate trend by itself. Scientists generally examine temperature records over much longer periods to assess changes in the Earth’s climate.

A Continuing Global Climate Signal

The 2026 data shown in the graphic add another year to a long-running record of global temperature observations. The comparison with data extending back to 1940 illustrates how unusual recent temperature conditions can appear against the wider historical record.

As the year progresses, additional observations will provide a more complete picture of where 2026 ultimately ranks among recent years.

The chart serves as a reminder that monitoring global temperatures requires continuous observations and careful comparison with established climate baselines. Such datasets are increasingly important for researchers studying the pace and consequences of global warming.