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Atmospheric CO 2 February 2024 427.09 parts per million (ppm) Mauna Loa Observatory, Hawaii (NOAA) Preliminary da ta released March 5, 2025
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Atmospheric CO 2 February 2024 427.09 parts per million (ppm) Mauna Loa Observatory, Hawaii (NOAA) Preliminary da ta released March 5, 2025

December 2024 Global Temperature Change +1.55°C 2nd Warmest December since 1880 CSAS / GISS data retrieved March 5, 2025 The Earth's global average surface temperature in December 2024 was 1.55°C above the average for the pre-industrial comparison period of 1880-1920. December 2024 was the second warmest December since 1880 when records began. The global average temperature for December over the…