Highest monthly CO2 level at Mauna Loa in first half of 2026
1
Ṁ1kṀ1.4kJun 30
12%
432 or less
12%
432.0001-432.25
12%
432.2501-432.5
12%
432.50001-432.6
12%
432.60001-432.7
12%
432.70001-432.8
12%
432.80001-432.9
10%
432.90001-433
5%
433.0001-433.25
2%
433.2501 or higher
Resolves when June 2026 available at https://gml.noaa.gov/webdata/ccgg/trends/co2/co2_mm_mlo.txtResolves
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