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.

1.10–1.14ºC

<1.10ºC

1.15–1.19ºC

Temperature Increase

May 2026 Temperature Increase (ºC)

This market will resolve according to the numerical rank of how hot 2026 is when compared against all other years for which the Global Land-Ocean Temperature Index has data.

Years will be ranked in descending order, starting with the hottest as number 1, the second hottest as number 2, etc.

If 2026 ties with any other year, it will resolve according to the place the year it ties with occupies.

This market will resolve immediately once the specified data becomes available, regardless of whether the figure for the relevant years is later revised.

The primary resolution source for this market will be the figure found in the table titled "Land-Ocean Temperature Index (C)" under the column "No_Smoothing" in the row "2026" (https://data.giss.nasa.gov/gistemp/graphs/graph_data/Global_Mean_Estimates_based_on_Land_and_Ocean_Data/graph.txt). If NASA's "Global Temperature Index" is rendered permanently unavailable, other information from NASA may be used. If no information for 2026 is provided by NASA by March 1, 2027, 11:59 PM ET, this market will resolve based on a consensus of credible reporting.

Where will 2026 rank among the hottest years on record?

This market will resolve based on the data for the Global Land-Ocean Temperature Index for May 2026 versus the data points available for all other Mays on record. 

Note: If May 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 "May" (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 June 30, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.

2nd hottest

3rd hottest

1st hottest

Hottest Month

2026 May 1st, 2nd, 3rd hottest on record?

This market will resolve based on the data for the Global Land-Ocean Temperature Index for any month of 2026 versus the data points available for all years for the relevant month on record. If any month of 2026 is the hottest of that month for any year in record, this market will resolve to "Yes". Otherwise, this market will resolve to "No".

Note: If any month of 2026 is tied for hottest with the same month of another year, this market will resolve to "Yes".

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" (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.

This market may resolve immediately upon the release of data for any month which qualifies towards a "Yes" resolution.

If no information for all months is provided by NASA by January 31, 2027, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.