Preliminary ERA5 reanalysis data and satellite observations indicate early April 2026 global surface air temperatures remain elevated, around 1.2–1.4°C above the 20th-century average, positioning the month to vie for a top-three ranking in NASA's GISS Global Land-Ocean Temperature Index. Trader consensus at 50.5% implied probability for third-hottest stems from March 2026's fourth-warmest finish (0.53°C above 1991–2020 per Copernicus), driven by persistent ocean heat content despite the shift from El Niño to ENSO-neutral conditions, which historically tempers extremes. Recent U.S. record March warmth (NOAA) underscores hemispheric trends, though La Niña forecasts for late spring introduce cooling uncertainty. Full NASA GISS April data, expected mid-May, will clarify rankings against recent records like April 2025 (second-warmest).
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated2026 April 1st, 2nd, 3rd hottest on record?
2026 April 1st, 2nd, 3rd hottest on record?
3rd hottest 51%
2nd hottest 29%
4th or lower 17%
1st hottest 8%
$41,226 Vol.
$41,226 Vol.
1st hottest
8%
2nd hottest
29%
3rd hottest
51%
4th or lower
17%
3rd hottest 51%
2nd hottest 29%
4th or lower 17%
1st hottest 8%
$41,226 Vol.
$41,226 Vol.
1st hottest
8%
2nd hottest
29%
3rd hottest
51%
4th or lower
17%
Note: If April 2026 is tied for first, second, or third hottest with another year, it will qualify for the bracket it ties with.
The primary resolution source for this market will be the figures found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "Apr" (https://data.giss.nasa.gov/gistemp/tabledata_v4/GLB.Ts+dSST.txt). If NASA's "Global Temperature Index" is rendered permanently unavailable, other information from NASA may be used.
If no information for April 2026 is provided by NASA by May 31, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.
Market Opened: Mar 24, 2026, 6:05 PM ET
Resolver
0x69c47De9D...Note: If April 2026 is tied for first, second, or third hottest with another year, it will qualify for the bracket it ties with.
The primary resolution source for this market will be the figures found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "Apr" (https://data.giss.nasa.gov/gistemp/tabledata_v4/GLB.Ts+dSST.txt). If NASA's "Global Temperature Index" is rendered permanently unavailable, other information from NASA may be used.
If no information for April 2026 is provided by NASA by May 31, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.
Resolver
0x69c47De9D...Preliminary ERA5 reanalysis data and satellite observations indicate early April 2026 global surface air temperatures remain elevated, around 1.2–1.4°C above the 20th-century average, positioning the month to vie for a top-three ranking in NASA's GISS Global Land-Ocean Temperature Index. Trader consensus at 50.5% implied probability for third-hottest stems from March 2026's fourth-warmest finish (0.53°C above 1991–2020 per Copernicus), driven by persistent ocean heat content despite the shift from El Niño to ENSO-neutral conditions, which historically tempers extremes. Recent U.S. record March warmth (NOAA) underscores hemispheric trends, though La Niña forecasts for late spring introduce cooling uncertainty. Full NASA GISS April data, expected mid-May, will clarify rankings against recent records like April 2025 (second-warmest).
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated


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