datoid

Atmospheric CO₂ at Mauna Loa reached 431.12 ppm on April 15, 2026—significantly above the recent mean of 421.17 ppm by 2.1 standard deviations. This represents the highest reading in the recent dataset. The measurement coincides with record-high GDP (+1.4%), CPI inflation (+1.8%), and treasury yields (+13.8% over 3 months), alongside a 9.3% jump in global temperature anomaly to 1.18°C. While CO₂ shows natural seasonal variation, this deviation suggests either measurement anomaly or acceleration in atmospheric accumulation during a period of economic expansion.