**Intense early-July heat across North America drove global daily mean surface air temperatures to record levels on one of July 1–3, 2026.** Widespread heat domes produced all-time daily highs from the eastern U.S. to the Plains, with multiple cities exceeding 100–106 °F (38–41 °C) on July 2 and contributing to an exceptional spike in the ERA5 global average. Official reanalysis products from Copernicus and related agencies place one of those three days at the top of the historical daily series, exceeding prior peaks such as July 2024. This outcome aligns with the strong 100 % market-implied probability for “1st hottest.” Realistic challenges remain limited but include final post-processing revisions to the reanalysis dataset or measurement uncertainties in sparsely observed regions that could shift the precise daily ranking by small margins. No subsequent July 2026 days have approached the same global mean, reinforcing the current consensus.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated2026 July 1st, 2nd, 3rd hottest on record?
2026 July 1st, 2nd, 3rd hottest on record?
1st hottest 100.0%
2nd hottest <1%
3rd hottest <1%
4th or lower <1%
$181,149 Vol.
$181,149 Vol.
Jul 30, 2026
1st hottest
Yes
2nd hottest
No
3rd hottest
No
4th or lower
No
1st hottest 100.0%
2nd hottest <1%
3rd hottest <1%
4th or lower <1%
$181,149 Vol.
$181,149 Vol.
Jul 30, 2026
1st hottest
$88,121 Vol.
Yes
2nd hottest
$35,805 Vol.
No
3rd hottest
$36,207 Vol.
No
4th or lower
$21,016 Vol.
No
This market will resolve based on the data for the Global Land-Ocean Temperature Index for July 2026 versus the data points available for all other Julys on record.
Note: If July 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 "Jul" (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 July 2026 is provided by NASA by August 31, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.**Intense early-July heat across North America drove global daily mean surface air temperatures to record levels on one of July 1–3, 2026.** Widespread heat domes produced all-time daily highs from the eastern U.S. to the Plains, with multiple cities exceeding 100–106 °F (38–41 °C) on July 2 and contributing to an exceptional spike in the ERA5 global average. Official reanalysis products from Copernicus and related agencies place one of those three days at the top of the historical daily series, exceeding prior peaks such as July 2024. This outcome aligns with the strong 100 % market-implied probability for “1st hottest.”
Realistic challenges remain limited but include final post-processing revisions to the reanalysis dataset or measurement uncertainties in sparsely observed regions that could shift the precise daily ranking by small margins. No subsequent July 2026 days have approached the same global mean, reinforcing the current consensus.
This market will resolve based on the data for the Global Land-Ocean Temperature Index for July 2026 versus the data points available for all other Julys on record.
Note: If July 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 "Jul" (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 July 2026 is provided by NASA by August 31, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.
Note: If July 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 "Jul" (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 July 2026 is provided by NASA by August 31, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.
Market Opened: Jul 6, 2026, 2:45 PM ET
Volume
$181,149End Date
Jul 31, 2026Market Opened
Jul 6, 2026, 2:45 PM ETResolver
0x69c47De9D...Outcome proposed: Yes
No dispute
Final outcome: Yes
This market will resolve based on the data for the Global Land-Ocean Temperature Index for July 2026 versus the data points available for all other Julys on record.
Note: If July 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 "Jul" (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 July 2026 is provided by NASA by August 31, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.**Intense early-July heat across North America drove global daily mean surface air temperatures to record levels on one of July 1–3, 2026.** Widespread heat domes produced all-time daily highs from the eastern U.S. to the Plains, with multiple cities exceeding 100–106 °F (38–41 °C) on July 2 and contributing to an exceptional spike in the ERA5 global average. Official reanalysis products from Copernicus and related agencies place one of those three days at the top of the historical daily series, exceeding prior peaks such as July 2024. This outcome aligns with the strong 100 % market-implied probability for “1st hottest.”
Realistic challenges remain limited but include final post-processing revisions to the reanalysis dataset or measurement uncertainties in sparsely observed regions that could shift the precise daily ranking by small margins. No subsequent July 2026 days have approached the same global mean, reinforcing the current consensus.
This market will resolve based on the data for the Global Land-Ocean Temperature Index for July 2026 versus the data points available for all other Julys on record.
Note: If July 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 "Jul" (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 July 2026 is provided by NASA by August 31, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.
Note: If July 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 "Jul" (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 July 2026 is provided by NASA by August 31, 2026, 11:59 PM ET, a consensus of credible sources will be used to resolve this market.
Volume
$181,149End Date
Jul 31, 2026Market Opened
Jul 6, 2026, 2:45 PM ETResolver
0x69c47De9D...Outcome proposed: Yes
No dispute
Final outcome: Yes
**Intense early-July heat across North America drove global daily mean surface air temperatures to record levels on one of July 1–3, 2026.** Widespread heat domes produced all-time daily highs from the eastern U.S. to the Plains, with multiple cities exceeding 100–106 °F (38–41 °C) on July 2 and contributing to an exceptional spike in the ERA5 global average. Official reanalysis products from Copernicus and related agencies place one of those three days at the top of the historical daily series, exceeding prior peaks such as July 2024. This outcome aligns with the strong 100 % market-implied probability for “1st hottest.” Realistic challenges remain limited but include final post-processing revisions to the reanalysis dataset or measurement uncertainties in sparsely observed regions that could shift the precise daily ranking by small margins. No subsequent July 2026 days have approached the same global mean, reinforcing the current consensus.
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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