{ "id": "co2-ppm-mauna-loa", "name": "Atmospheric CO2 Concentration - Mauna Loa Monthly (1958-2026)", "title": "Atmospheric CO2 Concentration - Mauna Loa Monthly (1958-2026)", "description": "Monthly atmospheric CO2 concentration in parts per million measured at Mauna Loa Observatory. Duplicate of co2-ppm-mauna-loa-monthly.", "category": "environment", "source": "https://github.com/datasets/co2-ppm", "source_url": "https://github.com/datasets/co2-ppm", "updated": "2026-04", "record_count": 816, "columns": [ { "key": "date", "label": "Date", "type": "string" }, { "key": "average_ppm", "label": "Average Ppm", "type": "number" }, { "key": "interpolated_ppm", "label": "Interpolated Ppm", "type": "number" }, { "key": "trend_ppm", "label": "Trend Ppm", "type": "string" } ], "rows": [ { "date": "1958-03", "average_ppm": 315.71, "interpolated_ppm": 314.44, "trend_ppm": "" }, { "date": "1958-04", "average_ppm": 317.45, "interpolated_ppm": 315.16, "trend_ppm": "" }, { "date": "1958-05", "average_ppm": 317.51, "interpolated_ppm": 314.69, "trend_ppm": "" }, { "date": "1958-06", "average_ppm": 317.27, "interpolated_ppm": 315.15, "trend_ppm": "" }, { "date": "1958-07", "average_ppm": 315.87, "interpolated_ppm": 315.2, "trend_ppm": "" }, { "date": "1958-08", "average_ppm": 314.93, "interpolated_ppm": 316.21, "trend_ppm": "" }, { "date": "1958-09", "average_ppm": 313.21, "interpolated_ppm": 316.11, "trend_ppm": "" }, { "date": "1958-10", "average_ppm": 312.42, "interpolated_ppm": 315.41, "trend_ppm": "" }, { "date": "1958-11", "average_ppm": 313.33, "interpolated_ppm": 315.21, "trend_ppm": "" }, { "date": "1958-12", "average_ppm": 314.67, "interpolated_ppm": 315.43, "trend_ppm": "" }, { "date": "1959-01", "average_ppm": 315.58, "interpolated_ppm": 315.52, "trend_ppm": "" }, { "date": "1959-02", "average_ppm": 316.49, "interpolated_ppm": 315.84, "trend_ppm": "" }, { "date": "1959-03", "average_ppm": 316.65, "interpolated_ppm": 315.37, "trend_ppm": "" }, { "date": "1959-04", "average_ppm": 317.72, "interpolated_ppm": 315.42, "trend_ppm": "" }, { "date": "1959-05", "average_ppm": 318.29, "interpolated_ppm": 315.46, "trend_ppm": "" }, { "date": "1959-06", "average_ppm": 318.15, "interpolated_ppm": 316, "trend_ppm": "" }, { "date": "1959-07", "average_ppm": 316.54, "interpolated_ppm": 315.87, "trend_ppm": "" }, { "date": "1959-08", "average_ppm": 314.8, "interpolated_ppm": 316.09, "trend_ppm": "" }, { "date": "1959-09", "average_ppm": 313.84, "interpolated_ppm": 316.75, "trend_ppm": "" }, { "date": "1959-10", "average_ppm": 313.33, "interpolated_ppm": 316.34, "trend_ppm": "" }, { "date": "1959-11", "average_ppm": 314.81, "interpolated_ppm": 316.69, "trend_ppm": "" }, { "date": "1959-12", "average_ppm": 315.58, "interpolated_ppm": 316.35, "trend_ppm": "" }, { "date": "1960-01", "average_ppm": 316.43, "interpolated_ppm": 316.38, "trend_ppm": "" }, { "date": "1960-02", "average_ppm": 316.98, "interpolated_ppm": 316.33, "trend_ppm": "" }, { "date": "1960-03", "average_ppm": 317.58, "interpolated_ppm": 316.27, "trend_ppm": "" }, { "date": "1960-04", "average_ppm": 319.03, "interpolated_ppm": 316.7, "trend_ppm": "" }, { "date": "1960-05", "average_ppm": 320.03, "interpolated_ppm": 317.19, "trend_ppm": "" }, { "date": "1960-06", "average_ppm": 319.58, "interpolated_ppm": 317.45, "trend_ppm": "" }, { "date": "1960-07", "average_ppm": 318.18, "interpolated_ppm": 317.54, "trend_ppm": "" }, { "date": "1960-08", "average_ppm": 315.9, "interpolated_ppm": 317.22, "trend_ppm": "" }, { "date": "1960-09", "average_ppm": 314.17, "interpolated_ppm": 317.1, "trend_ppm": "" }, { "date": "1960-10", "average_ppm": 313.83, "interpolated_ppm": 316.85, "trend_ppm": "" }, { "date": "1960-11", "average_ppm": 315, "interpolated_ppm": 316.89, "trend_ppm": "" }, { "date": "1960-12", "average_ppm": 316.19, "interpolated_ppm": 316.96, "trend_ppm": "" }, { "date": "1961-01", "average_ppm": 316.89, "interpolated_ppm": 316.84, "trend_ppm": "" }, { "date": "1961-02", "average_ppm": 317.7, "interpolated_ppm": 317.05, "trend_ppm": "" }, { "date": "1961-03", "average_ppm": 318.54, "interpolated_ppm": 317.25, "trend_ppm": "" }, { "date": "1961-04", "average_ppm": 319.48, "interpolated_ppm": 317.16, "trend_ppm": "" }, { "date": "1961-05", "average_ppm": 320.58, "interpolated_ppm": 317.73, "trend_ppm": "" }, { "date": "1961-06", "average_ppm": 319.77, "interpolated_ppm": 317.61, "trend_ppm": "" }, { "date": "1961-07", "average_ppm": 318.56, "interpolated_ppm": 317.89, "trend_ppm": "" }, { "date": "1961-08", "average_ppm": 316.79, "interpolated_ppm": 318.09, "trend_ppm": "" }, { "date": "1961-09", "average_ppm": 314.99, "interpolated_ppm": 317.92, "trend_ppm": "" }, { "date": "1961-10", "average_ppm": 315.31, "interpolated_ppm": 318.34, "trend_ppm": "" }, { "date": "1961-11", "average_ppm": 316.1, "interpolated_ppm": 318, "trend_ppm": "" }, { "date": "1961-12", "average_ppm": 317.01, "interpolated_ppm": 317.78, "trend_ppm": "" }, { "date": "1962-01", "average_ppm": 317.94, "interpolated_ppm": 317.89, "trend_ppm": "" }, { "date": "1962-02", "average_ppm": 318.55, "interpolated_ppm": 317.89, "trend_ppm": "" }, { "date": "1962-03", "average_ppm": 319.68, "interpolated_ppm": 318.39, "trend_ppm": "" }, { "date": "1962-04", "average_ppm": 320.57, "interpolated_ppm": 318.24, "trend_ppm": "" }, { "date": "1962-05", "average_ppm": 321.02, "interpolated_ppm": 318.16, "trend_ppm": "" }, { "date": "1962-06", "average_ppm": 320.62, "interpolated_ppm": 318.45, "trend_ppm": "" }, { "date": "1962-07", "average_ppm": 319.61, "interpolated_ppm": 318.94, "trend_ppm": "" }, { "date": "1962-08", "average_ppm": 317.4, "interpolated_ppm": 318.71, "trend_ppm": "" }, { "date": "1962-09", "average_ppm": 316.24, "interpolated_ppm": 319.18, "trend_ppm": "" }, { "date": "1962-10", "average_ppm": 315.42, "interpolated_ppm": 318.46, "trend_ppm": "" }, { "date": "1962-11", "average_ppm": 316.69, "interpolated_ppm": 318.59, "trend_ppm": "" }, { "date": "1962-12", "average_ppm": 317.7, "interpolated_ppm": 318.47, "trend_ppm": "" }, { "date": "1963-01", "average_ppm": 318.74, "interpolated_ppm": 318.69, "trend_ppm": "" }, { "date": "1963-02", "average_ppm": 319.07, "interpolated_ppm": 318.41, "trend_ppm": "" }, { "date": "1963-03", "average_ppm": 319.86, "interpolated_ppm": 318.57, "trend_ppm": "" }, { "date": "1963-04", "average_ppm": 321.38, "interpolated_ppm": 319.05, "trend_ppm": "" }, { "date": "1963-05", "average_ppm": 322.24, "interpolated_ppm": 319.38, "trend_ppm": "" }, { "date": "1963-06", "average_ppm": 321.49, "interpolated_ppm": 319.31, "trend_ppm": "" }, { "date": "1963-07", "average_ppm": 319.74, "interpolated_ppm": 319.07, "trend_ppm": "" }, { "date": "1963-08", "average_ppm": 317.77, "interpolated_ppm": 319.07, "trend_ppm": "" }, { "date": "1963-09", "average_ppm": 316.21, "interpolated_ppm": 319.16, "trend_ppm": "" }, { "date": "1963-10", "average_ppm": 315.99, "interpolated_ppm": 319.03, "trend_ppm": "" }, { "date": "1963-11", "average_ppm": 317.07, "interpolated_ppm": 318.98, "trend_ppm": "" }, { "date": "1963-12", "average_ppm": 318.35, "interpolated_ppm": 319.13, "trend_ppm": "" }, { "date": "1964-01", "average_ppm": 319.57, "interpolated_ppm": 319.52, "trend_ppm": "" }, { "date": "1964-02", "average_ppm": 320.04, "interpolated_ppm": 319.37, "trend_ppm": "" }, { "date": "1964-03", "average_ppm": 320.75, "interpolated_ppm": 319.41, "trend_ppm": "" }, { "date": "1964-04", "average_ppm": 321.84, "interpolated_ppm": 319.46, "trend_ppm": "" }, { "date": "1964-05", "average_ppm": 322.25, "interpolated_ppm": 319.37, "trend_ppm": "" }, { "date": "1964-06", "average_ppm": 321.89, "interpolated_ppm": 319.73, "trend_ppm": "" }, { "date": "1964-07", "average_ppm": 320.44, "interpolated_ppm": 319.79, "trend_ppm": "" }, { "date": "1964-08", "average_ppm": 318.69, "interpolated_ppm": 320.03, "trend_ppm": "" }, { "date": "1964-09", "average_ppm": 316.71, "interpolated_ppm": 319.67, "trend_ppm": "" }, { "date": "1964-10", "average_ppm": 316.87, "interpolated_ppm": 319.93, "trend_ppm": "" }, { "date": "1964-11", "average_ppm": 317.68, "interpolated_ppm": 319.59, "trend_ppm": "" }, { "date": "1964-12", "average_ppm": 318.71, "interpolated_ppm": 319.49, "trend_ppm": "" }, { "date": "1965-01", "average_ppm": 319.44, "interpolated_ppm": 319.38, "trend_ppm": "" }, { "date": "1965-02", "average_ppm": 320.44, "interpolated_ppm": 319.79, "trend_ppm": "" }, { "date": "1965-03", "average_ppm": 320.89, "interpolated_ppm": 319.59, "trend_ppm": "" }, { "date": "1965-04", "average_ppm": 322.14, "interpolated_ppm": 319.79, "trend_ppm": "" }, { "date": "1965-05", "average_ppm": 322.17, "interpolated_ppm": 319.28, "trend_ppm": "" }, { "date": "1965-06", "average_ppm": 321.87, "interpolated_ppm": 319.68, "trend_ppm": "" }, { "date": "1965-07", "average_ppm": 321.21, "interpolated_ppm": 320.53, "trend_ppm": "" }, { "date": "1965-08", "average_ppm": 318.87, "interpolated_ppm": 320.18, "trend_ppm": "" }, { "date": "1965-09", "average_ppm": 317.82, "interpolated_ppm": 320.78, "trend_ppm": "" }, { "date": "1965-10", "average_ppm": 317.3, "interpolated_ppm": 320.37, "trend_ppm": "" }, { "date": "1965-11", "average_ppm": 318.87, "interpolated_ppm": 320.79, "trend_ppm": "" }, { "date": "1965-12", "average_ppm": 319.42, "interpolated_ppm": 320.2, "trend_ppm": "" }, { "date": "1966-01", "average_ppm": 320.62, "interpolated_ppm": 320.57, "trend_ppm": "" }, { "date": "1966-02", "average_ppm": 321.6, "interpolated_ppm": 320.94, "trend_ppm": "" }, { "date": "1966-03", "average_ppm": 322.39, "interpolated_ppm": 321.08, "trend_ppm": "" }, { "date": "1966-04", "average_ppm": 323.7, "interpolated_ppm": 321.34, "trend_ppm": "" }, { "date": "1966-05", "average_ppm": 324.08, "interpolated_ppm": 321.18, "trend_ppm": "" }, { "date": "1966-06", "average_ppm": 323.75, "interpolated_ppm": 321.55, "trend_ppm": "" }, { "date": "1966-07", "average_ppm": 322.37, "interpolated_ppm": 321.69, "trend_ppm": "" }, { "date": "1966-08", "average_ppm": 320.36, "interpolated_ppm": 321.68, "trend_ppm": "" }, { "date": "1966-09", "average_ppm": 318.64, "interpolated_ppm": 321.61, "trend_ppm": "" }, { "date": "1966-10", "average_ppm": 318.1, "interpolated_ppm": 321.18, "trend_ppm": "" }, { "date": "1966-11", "average_ppm": 319.78, "interpolated_ppm": 321.71, "trend_ppm": "" }, { "date": "1966-12", "average_ppm": 321.02, "interpolated_ppm": 321.81, "trend_ppm": "" }, { "date": "1967-01", "average_ppm": 322.33, "interpolated_ppm": 322.28, "trend_ppm": "" }, { "date": "1967-02", "average_ppm": 322.5, "interpolated_ppm": 321.83, "trend_ppm": "" }, { "date": "1967-03", "average_ppm": 323.03, "interpolated_ppm": 321.72, "trend_ppm": "" }, { "date": "1967-04", "average_ppm": 324.41, "interpolated_ppm": 322.05, "trend_ppm": "" }, { "date": "1967-05", "average_ppm": 325, "interpolated_ppm": 322.09, "trend_ppm": "" }, { "date": "1967-06", "average_ppm": 324.09, "interpolated_ppm": 321.89, "trend_ppm": "" }, { "date": "1967-07", "average_ppm": 322.54, "interpolated_ppm": 321.86, "trend_ppm": "" }, { "date": "1967-08", "average_ppm": 320.92, "interpolated_ppm": 322.24, "trend_ppm": "" }, { "date": "1967-09", "average_ppm": 319.25, "interpolated_ppm": 322.24, "trend_ppm": "" }, { "date": "1967-10", "average_ppm": 319.39, "interpolated_ppm": 322.48, "trend_ppm": "" }, { "date": "1967-11", "average_ppm": 320.73, "interpolated_ppm": 322.66, "trend_ppm": "" }, { "date": "1967-12", "average_ppm": 321.96, "interpolated_ppm": 322.74, "trend_ppm": "" }, { "date": "1968-01", "average_ppm": 322.57, "interpolated_ppm": 322.51, "trend_ppm": "" }, { "date": "1968-02", "average_ppm": 323.15, "interpolated_ppm": 322.48, "trend_ppm": "" }, { "date": "1968-03", "average_ppm": 323.89, "interpolated_ppm": 322.55, "trend_ppm": "" }, { "date": "1968-04", "average_ppm": 325.02, "interpolated_ppm": 322.63, "trend_ppm": "" }, { "date": "1968-05", "average_ppm": 325.57, "interpolated_ppm": 322.66, "trend_ppm": "" }, { "date": "1968-06", "average_ppm": 325.36, "interpolated_ppm": 323.17, "trend_ppm": "" }, { "date": "1968-07", "average_ppm": 324.14, "interpolated_ppm": 323.48, "trend_ppm": "" }, { "date": "1968-08", "average_ppm": 322.11, "interpolated_ppm": 323.46, "trend_ppm": "" }, { "date": "1968-09", "average_ppm": 320.33, "interpolated_ppm": 323.33, "trend_ppm": "" }, { "date": "1968-10", "average_ppm": 320.25, "interpolated_ppm": 323.34, "trend_ppm": "" }, { "date": "1968-11", "average_ppm": 321.32, "interpolated_ppm": 323.26, "trend_ppm": "" }, { "date": "1968-12", "average_ppm": 322.89, "interpolated_ppm": 323.68, "trend_ppm": "" }, { "date": "1969-01", "average_ppm": 324, "interpolated_ppm": 323.95, "trend_ppm": "" }, { "date": "1969-02", "average_ppm": 324.41, "interpolated_ppm": 323.75, "trend_ppm": "" }, { "date": "1969-03", "average_ppm": 325.63, "interpolated_ppm": 324.31, "trend_ppm": "" }, { "date": "1969-04", "average_ppm": 326.66, "interpolated_ppm": 324.28, "trend_ppm": "" }, { "date": "1969-05", "average_ppm": 327.38, "interpolated_ppm": 324.46, "trend_ppm": "" }, { "date": "1969-06", "average_ppm": 326.71, "interpolated_ppm": 324.49, "trend_ppm": "" }, { "date": "1969-07", "average_ppm": 325.88, "interpolated_ppm": 325.19, "trend_ppm": "" }, { "date": "1969-08", "average_ppm": 323.66, "interpolated_ppm": 324.99, "trend_ppm": "" }, { "date": "1969-09", "average_ppm": 322.38, "interpolated_ppm": 325.38, "trend_ppm": "" }, { "date": "1969-10", "average_ppm": 321.78, "interpolated_ppm": 324.89, "trend_ppm": "" }, { "date": "1969-11", "average_ppm": 322.85, "interpolated_ppm": 324.8, "trend_ppm": "" }, { "date": "1969-12", "average_ppm": 324.11, "interpolated_ppm": 324.91, "trend_ppm": "" }, { "date": "1970-01", "average_ppm": 325.06, "interpolated_ppm": 325.01, "trend_ppm": "" }, { "date": "1970-02", "average_ppm": 325.99, "interpolated_ppm": 325.31, "trend_ppm": "" }, { "date": "1970-03", "average_ppm": 326.93, "interpolated_ppm": 325.61, "trend_ppm": "" }, { "date": "1970-04", "average_ppm": 328.13, "interpolated_ppm": 325.75, "trend_ppm": "" }, { "date": "1970-05", "average_ppm": 328.08, "interpolated_ppm": 325.15, "trend_ppm": "" }, { "date": "1970-06", "average_ppm": 327.67, "interpolated_ppm": 325.44, "trend_ppm": "" }, { "date": "1970-07", "average_ppm": 326.34, "interpolated_ppm": 325.65, "trend_ppm": "" }, { "date": "1970-08", "average_ppm": 324.68, "interpolated_ppm": 326.02, "trend_ppm": "" }, { "date": "1970-09", "average_ppm": 323.1, "interpolated_ppm": 326.11, "trend_ppm": "" }, { "date": "1970-10", "average_ppm": 323.06, "interpolated_ppm": 326.18, "trend_ppm": "" }, { "date": "1970-11", "average_ppm": 324.01, "interpolated_ppm": 325.96, "trend_ppm": "" }, { "date": "1970-12", "average_ppm": 325.13, "interpolated_ppm": 325.93, "trend_ppm": "" }, { "date": "1971-01", "average_ppm": 326.17, "interpolated_ppm": 326.12, "trend_ppm": "" }, { "date": "1971-02", "average_ppm": 326.69, "interpolated_ppm": 326.01, "trend_ppm": "" }, { "date": "1971-03", "average_ppm": 327.18, "interpolated_ppm": 325.85, "trend_ppm": "" }, { "date": "1971-04", "average_ppm": 327.78, "interpolated_ppm": 325.39, "trend_ppm": "" }, { "date": "1971-05", "average_ppm": 328.93, "interpolated_ppm": 325.99, "trend_ppm": "" }, { "date": "1971-06", "average_ppm": 328.57, "interpolated_ppm": 326.34, "trend_ppm": "" }, { "date": "1971-07", "average_ppm": 327.36, "interpolated_ppm": 326.67, "trend_ppm": "" }, { "date": "1971-08", "average_ppm": 325.43, "interpolated_ppm": 326.77, "trend_ppm": "" }, { "date": "1971-09", "average_ppm": 323.36, "interpolated_ppm": 326.38, "trend_ppm": "" }, { "date": "1971-10", "average_ppm": 323.56, "interpolated_ppm": 326.69, "trend_ppm": "" }, { "date": "1971-11", "average_ppm": 324.8, "interpolated_ppm": 326.75, "trend_ppm": "" }, { "date": "1971-12", "average_ppm": 326.01, "interpolated_ppm": 326.81, "trend_ppm": "" }, { "date": "1972-01", "average_ppm": 326.77, "interpolated_ppm": 326.71, "trend_ppm": "" }, { "date": "1972-02", "average_ppm": 327.63, "interpolated_ppm": 326.96, "trend_ppm": "" }, { "date": "1972-03", "average_ppm": 327.75, "interpolated_ppm": 326.39, "trend_ppm": "" }, { "date": "1972-04", "average_ppm": 329.72, "interpolated_ppm": 327.3, "trend_ppm": "" }, { "date": "1972-05", "average_ppm": 330.07, "interpolated_ppm": 327.12, "trend_ppm": "" }, { "date": "1972-06", "average_ppm": 329.09, "interpolated_ppm": 326.87, "trend_ppm": "" }, { "date": "1972-07", "average_ppm": 328.04, "interpolated_ppm": 327.38, "trend_ppm": "" }, { "date": "1972-08", "average_ppm": 326.32, "interpolated_ppm": 327.69, "trend_ppm": "" }, { "date": "1972-09", "average_ppm": 324.84, "interpolated_ppm": 327.88, "trend_ppm": "" }, { "date": "1972-10", "average_ppm": 325.2, "interpolated_ppm": 328.33, "trend_ppm": "" }, { "date": "1972-11", "average_ppm": 326.5, "interpolated_ppm": 328.46, "trend_ppm": "" }, { "date": "1972-12", "average_ppm": 327.55, "interpolated_ppm": 328.35, "trend_ppm": "" }, { "date": "1973-01", "average_ppm": 328.55, "interpolated_ppm": 328.49, "trend_ppm": "" }, { "date": "1973-02", "average_ppm": 329.57, "interpolated_ppm": 328.89, "trend_ppm": "" }, { "date": "1973-03", "average_ppm": 330.3, "interpolated_ppm": 328.97, "trend_ppm": "" }, { "date": "1973-04", "average_ppm": 331.5, 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"interpolated_ppm": 421.9, "trend_ppm": 18 }, { "date": "2023-10", "average_ppm": 418.82, "interpolated_ppm": 422.05, "trend_ppm": 27 }, { "date": "2023-11", "average_ppm": 420.46, "interpolated_ppm": 422.44, "trend_ppm": 21 }, { "date": "2023-12", "average_ppm": 421.86, "interpolated_ppm": 422.58, "trend_ppm": 20 }, { "date": "2024-01", "average_ppm": 422.8, "interpolated_ppm": 422.55, "trend_ppm": 27 }, { "date": "2024-02", "average_ppm": 424.55, "interpolated_ppm": 423.67, "trend_ppm": 22 }, { "date": "2024-03", "average_ppm": 425.38, "interpolated_ppm": 423.94, "trend_ppm": 22 }, { "date": "2024-04", "average_ppm": 426.51, "interpolated_ppm": 424, "trend_ppm": 22 }, { "date": "2024-05", "average_ppm": 426.9, "interpolated_ppm": 423.65, "trend_ppm": 29 }, { "date": "2024-06", "average_ppm": 426.91, "interpolated_ppm": 424.46, "trend_ppm": 20 }, { "date": "2024-07", "average_ppm": 425.55, "interpolated_ppm": 425.13, "trend_ppm": 24 }, { "date": "2024-08", "average_ppm": 422.99, "interpolated_ppm": 424.88, "trend_ppm": 22 }, { "date": "2024-09", "average_ppm": 422.03, "interpolated_ppm": 425.43, "trend_ppm": 18 }, { "date": "2024-10", "average_ppm": 422.38, "interpolated_ppm": 425.61, "trend_ppm": 22 }, { "date": "2024-11", "average_ppm": 423.85, "interpolated_ppm": 425.83, "trend_ppm": 24 }, { "date": "2024-12", "average_ppm": 425.4, "interpolated_ppm": 426.13, "trend_ppm": 28 }, { "date": "2025-01", "average_ppm": 426.65, "interpolated_ppm": 426.4, "trend_ppm": 29 }, { "date": "2025-02", "average_ppm": 427.09, "interpolated_ppm": 426.21, "trend_ppm": 24 }, { "date": "2025-03", "average_ppm": 428.15, "interpolated_ppm": 426.7, "trend_ppm": 27 }, { "date": "2025-04", "average_ppm": 429.64, "interpolated_ppm": 427.13, "trend_ppm": 23 }, { "date": "2025-05", "average_ppm": 430.51, "interpolated_ppm": 427.26, "trend_ppm": 23 }, { "date": "2025-06", "average_ppm": 429.61, "interpolated_ppm": 427.16, "trend_ppm": 26 }, { "date": "2025-07", "average_ppm": 427.87, "interpolated_ppm": 427.45, "trend_ppm": 24 }, { "date": "2025-08", "average_ppm": 425.48, "interpolated_ppm": 427.37, "trend_ppm": 24 }, { "date": "2025-09", "average_ppm": 424.37, "interpolated_ppm": 427.77, "trend_ppm": 19 }, { "date": "2025-10", "average_ppm": 424.87, "interpolated_ppm": 428.1, "trend_ppm": 19 }, { "date": "2025-11", "average_ppm": 426.46, "interpolated_ppm": 428.43, "trend_ppm": 20 }, { "date": "2025-12", "average_ppm": 427.49, "interpolated_ppm": 428.21, "trend_ppm": 24 }, { "date": "2026-01", "average_ppm": 428.62, "interpolated_ppm": 428.37, "trend_ppm": 25 }, { "date": "2026-02", "average_ppm": 429.35, "interpolated_ppm": 428.47, "trend_ppm": 17 } ], "meta": { "title": "Atmospheric CO2 Concentration - Mauna Loa Monthly (1958-2026) - Free Download", "description": "Monthly atmospheric CO2 concentration in parts per million measured at Mauna Loa Observatory. Duplicate of co2-ppm-mauna-loa-monthly. Contains 816 records. Download in Excel, CSV, PDF formats.", "seo_title": "Atmospheric CO2 Concentration - Mauna Loa Monthly (1958-2026) | ListBase", "seo_description": "Download Atmospheric CO2 Concentration - Mauna Loa Monthly (1958-2026) — 816 records. Available in Excel, CSV, PDF formats.", "key_takeaways": [ "Contains 816 records / 4 fields", "Available for free download in Excel, CSV, and PDF formats", "Data sourced from: https://github.com/datasets/co2-ppm" ] } }