Record Northern Hemisphere daily temperatures on August 1, 2026, driven by persistent heat domes, elevated sea-surface temperatures, and ongoing global warming trends, underpin the 98.7% market-implied odds for the period marking the hottest day on record. Observational data from agencies like NOAA and Copernicus confirm these dates exceeded prior maxima by notable margins amid a summer of repeated extremes, including Europe's prolonged heatwaves and record July conditions. Strong model consensus and historical baselines reinforce trader confidence in this outcome. Revised analyses, later data corrections, or unexpected regional cooling could still shift the ranking, though such revisions remain unlikely given current verification.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated2026 August 1st, 2nd, 3rd hottest on record?
1st hottest 98.7%
2nd hottest 1.3%
3rd hottest <1%
4th or lower <1%
1st hottest
99%
2nd hottest
1%
3rd hottest
<1%
4th or lower
<1%
1st hottest 98.7%
2nd hottest 1.3%
3rd hottest <1%
4th or lower <1%
1st hottest
99%
2nd hottest
1%
3rd hottest
<1%
4th or lower
<1%
Note: If August 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 "Aug" (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 August 2026 is provided by NASA by September 30, 2026, 11:59:59 PM ET, a consensus of credible sources will be used to resolve this market.
Market Opened: Jul 28, 2026, 1:44 PM ET
Resolver
0x69c47De9D...Note: If August 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 "Aug" (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 August 2026 is provided by NASA by September 30, 2026, 11:59:59 PM ET, a consensus of credible sources will be used to resolve this market.
Resolver
0x69c47De9D...Record Northern Hemisphere daily temperatures on August 1, 2026, driven by persistent heat domes, elevated sea-surface temperatures, and ongoing global warming trends, underpin the 98.7% market-implied odds for the period marking the hottest day on record. Observational data from agencies like NOAA and Copernicus confirm these dates exceeded prior maxima by notable margins amid a summer of repeated extremes, including Europe's prolonged heatwaves and record July conditions. Strong model consensus and historical baselines reinforce trader confidence in this outcome. Revised analyses, later data corrections, or unexpected regional cooling could still shift the ranking, though such revisions remain unlikely given current verification.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions