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icon for May 2026 Temperature Increase (ºC)

May 2026 Temperature Increase (ºC)

icon for May 2026 Temperature Increase (ºC)

May 2026 Temperature Increase (ºC)

Jun 10

Jun 10

1.10–1.14ºC 62%

<1.10ºC 17%

1.15–1.19ºC 13%

1.20–1.24ºC 7%

Polymarket

$58,198 Vol.

1.10–1.14ºC 62%

<1.10ºC 17%

1.15–1.19ºC 13%

1.20–1.24ºC 7%

Polymarket

$58,198 Vol.

<1.10ºC

$23,916 Vol.

17%

1.10–1.14ºC

$5,389 Vol.

62%

1.15–1.19ºC

$8,419 Vol.

13%

1.20–1.24ºC

$6,181 Vol.

7%

1.25–1.29ºC

$6,539 Vol.

3%

>1.29ºC

$7,755 Vol.

1%

This market will resolve according to the value reported by the Global Land-Ocean Temperature Index for May 2026 when it is released. An anomaly within a named bracket for May 2026 is necessary and sufficient to resolve this market immediately once the data becomes available, regardless of whether the figure for May 2026 is later revised. The primary resolution source for this market will be the figure found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "May" in the row "2026" (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 May 2026 is provided by NASA by July 1, 2026, 11:59 PM ET, this market will resolve to the lowest range bracket.Recent observational data from NASA and NOAA place global temperatures near 1.19 °C above the 1951–1980 baseline for 2025, reflecting the long-term anthropogenic trend superimposed on ENSO-neutral conditions that persisted through early 2026. With subsurface Pacific warming now evident and an 82 % probability of El Niño onset by May–July per the Climate Prediction Center, May 2026 surface anomalies are expected to remain anchored near recent monthly values in the 1.10–1.14 °C range. Model ensembles show limited disagreement for this month, as the developing warm phase has not yet produced the strongest teleconnections that typically elevate later-year temperatures.

This market will resolve according to the value reported by the Global Land-Ocean Temperature Index for May 2026 when it is released.

An anomaly within a named bracket for May 2026 is necessary and sufficient to resolve this market immediately once the data becomes available, regardless of whether the figure for May 2026 is later revised.

The primary resolution source for this market will be the figure found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "May" in the row "2026" (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 May 2026 is provided by NASA by July 1, 2026, 11:59 PM ET, this market will resolve to the lowest range bracket.
Volume
$58,198
End Date
Jun 10, 2026
Market Opened
Apr 27, 2026, 4:35 PM ET
This market will resolve according to the value reported by the Global Land-Ocean Temperature Index for May 2026 when it is released. An anomaly within a named bracket for May 2026 is necessary and sufficient to resolve this market immediately once the data becomes available, regardless of whether the figure for May 2026 is later revised. The primary resolution source for this market will be the figure found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "May" in the row "2026" (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 May 2026 is provided by NASA by July 1, 2026, 11:59 PM ET, this market will resolve to the lowest range bracket.
This market will resolve according to the value reported by the Global Land-Ocean Temperature Index for May 2026 when it is released. An anomaly within a named bracket for May 2026 is necessary and sufficient to resolve this market immediately once the data becomes available, regardless of whether the figure for May 2026 is later revised. The primary resolution source for this market will be the figure found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "May" in the row "2026" (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 May 2026 is provided by NASA by July 1, 2026, 11:59 PM ET, this market will resolve to the lowest range bracket.Recent observational data from NASA and NOAA place global temperatures near 1.19 °C above the 1951–1980 baseline for 2025, reflecting the long-term anthropogenic trend superimposed on ENSO-neutral conditions that persisted through early 2026. With subsurface Pacific warming now evident and an 82 % probability of El Niño onset by May–July per the Climate Prediction Center, May 2026 surface anomalies are expected to remain anchored near recent monthly values in the 1.10–1.14 °C range. Model ensembles show limited disagreement for this month, as the developing warm phase has not yet produced the strongest teleconnections that typically elevate later-year temperatures.

This market will resolve according to the value reported by the Global Land-Ocean Temperature Index for May 2026 when it is released.

An anomaly within a named bracket for May 2026 is necessary and sufficient to resolve this market immediately once the data becomes available, regardless of whether the figure for May 2026 is later revised.

The primary resolution source for this market will be the figure found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "May" in the row "2026" (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 May 2026 is provided by NASA by July 1, 2026, 11:59 PM ET, this market will resolve to the lowest range bracket.
Volume
$58,198
End Date
Jun 10, 2026
Market Opened
Apr 27, 2026, 4:35 PM ET
This market will resolve according to the value reported by the Global Land-Ocean Temperature Index for May 2026 when it is released. An anomaly within a named bracket for May 2026 is necessary and sufficient to resolve this market immediately once the data becomes available, regardless of whether the figure for May 2026 is later revised. The primary resolution source for this market will be the figure found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "May" in the row "2026" (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 May 2026 is provided by NASA by July 1, 2026, 11:59 PM ET, this market will resolve to the lowest range bracket.

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Frequently Asked Questions

"May 2026 Temperature Increase (ºC)" is a prediction market on Polymarket with 6 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "1.10–1.14ºC" at 62%, followed by "<1.10ºC" at 17%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 62¢ implies that the market collectively assigns a 62% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "May 2026 Temperature Increase (ºC)" has generated $58.2K in total trading volume since the market launched on Apr 27, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "May 2026 Temperature Increase (ºC)," browse the 6 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "May 2026 Temperature Increase (ºC)" is "1.10–1.14ºC" at 62%, meaning the market assigns a 62% chance to that outcome. The next closest outcome is "<1.10ºC" at 17%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "May 2026 Temperature Increase (ºC)" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.