Preliminary Berkeley Earth data through April 28, 2026, shows a global surface temperature anomaly of approximately 1.25°C above the 1850-1900 baseline for April 2026, positioning it as the third-warmest April on record behind 2024 (warmest) and 2025 (second), driving the market's 88% implied probability on "3rd hottest." Persistently elevated sea surface temperatures in the Atlantic and Indian Oceans, combined with neutral ENSO conditions following El Niño decay, fueled early-month heat, though a late-April cooldown kept it from surpassing prior records. Traders anticipate confirmation from official NASA GISTEMP, NOAA, and Copernicus ERA5 datasets in early May, with minimal upside risk for revisions pushing it to second due to finalized daily observations. This aligns with the ongoing trend of record-challenging Aprils amid anthropogenic climate forcing.
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 88.0%
2nd hottest 4.2%
4th or lower <1%
1st hottest <1%
$90,085 Vol.
$90,085 Vol.
1st hottest
<1%
2nd hottest
4%
3rd hottest
88%
4th or lower
1%
3rd hottest 88.0%
2nd hottest 4.2%
4th or lower <1%
1st hottest <1%
$90,085 Vol.
$90,085 Vol.
1st hottest
<1%
2nd hottest
4%
3rd hottest
88%
4th or lower
1%
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 Berkeley Earth data through April 28, 2026, shows a global surface temperature anomaly of approximately 1.25°C above the 1850-1900 baseline for April 2026, positioning it as the third-warmest April on record behind 2024 (warmest) and 2025 (second), driving the market's 88% implied probability on "3rd hottest." Persistently elevated sea surface temperatures in the Atlantic and Indian Oceans, combined with neutral ENSO conditions following El Niño decay, fueled early-month heat, though a late-April cooldown kept it from surpassing prior records. Traders anticipate confirmation from official NASA GISTEMP, NOAA, and Copernicus ERA5 datasets in early May, with minimal upside risk for revisions pushing it to second due to finalized daily observations. This aligns with the ongoing trend of record-challenging Aprils amid anthropogenic climate forcing.
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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