Tight odds for 2026 April's global temperature ranking—2nd hottest at 43.5%, 4th or lower matching it, 3rd at 42.5%, and 1st at 42.0%—stem from relentless anthropogenic warming clashing with ENSO cycle uncertainty. April 2024 set the record at +1.30°C above the 1991-2020 baseline per Copernicus, edging out 2023 (+1.24°C), with NOAA confirming the top spot. Continued greenhouse-driven rise (~0.2°C/decade) favors top-three contention, but post-2023/24 El Niño La Niña persistence through 2025 could temper anomalies below 2024 levels. A potential 2026 El Niño rebound, per NOAA probabilistic outlooks, differentiates 1st/2nd from lower ranks, as models diverge on its intensity amid volcanic and solar minima baselines. Traders weigh this volatility against historical April rankings.
Experimental AI-generated summary referencing Polymarket data · Updated2026 April 1st, 2nd, 3rd hottest on record?
2026 April 1st, 2nd, 3rd hottest on record?
2nd hottest 44%
4th or lower 43%
3rd hottest 43%
1st hottest 42%
1st hottest
42%
2nd hottest
44%
3rd hottest
43%
4th or lower
43%
2nd hottest 44%
4th or lower 43%
3rd hottest 43%
1st hottest 42%
1st hottest
42%
2nd hottest
44%
3rd hottest
43%
4th or lower
43%
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...Resolver
0x69c47De9D...Tight odds for 2026 April's global temperature ranking—2nd hottest at 43.5%, 4th or lower matching it, 3rd at 42.5%, and 1st at 42.0%—stem from relentless anthropogenic warming clashing with ENSO cycle uncertainty. April 2024 set the record at +1.30°C above the 1991-2020 baseline per Copernicus, edging out 2023 (+1.24°C), with NOAA confirming the top spot. Continued greenhouse-driven rise (~0.2°C/decade) favors top-three contention, but post-2023/24 El Niño La Niña persistence through 2025 could temper anomalies below 2024 levels. A potential 2026 El Niño rebound, per NOAA probabilistic outlooks, differentiates 1st/2nd from lower ranks, as models diverge on its intensity amid volcanic and solar minima baselines. Traders weigh this volatility against historical April rankings.
Experimental AI-generated summary referencing Polymarket data · Updated

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