TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 26, 8:00 AM EST
Polymarket
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 26 Jun '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Sao Paulo-Guarulhos International Airport Station, available here: https://www.wunderground.com/history/daily/br/guarulhos/SBGR. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 26 Jun '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Sao Paulo-Guarulhos International Airport Station, available here: https://www.wunderground.com/history/daily/br/guarulhos/SBGR. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Prediction markets aggregate dispersed information from many traders, often revealing insights that differ from traditional meteorological forecasts. While weather analysts rely on atmospheric models and historical data, this market incorporates real-time trader conviction about the highest temperature on June 26. Comparing the two can highlight where professional forecasters and market participants diverge—sometimes because new data has emerged, or because traders weigh certain scenarios differently. Neither source is inherently superior; together they provide complementary perspectives on the likely outcome.
This market resolves around Jun 26, 2026, once June 26 has passed and the highest temperature in São Paulo can be verified. The outcome is determined by comparing actual recorded temperatures against the specified thresholds in each contract. Resolution relies on credible public reporting of weather data for that date. Once the event is confirmed, payouts are distributed automatically to holders of the winning shares.
Several factors could shift odds in this market before Jun 26, 2026. Updated weather forecasts from meteorological agencies may signal higher or lower temperatures ahead, prompting traders to adjust positions. Seasonal climate patterns, ocean temperatures, and atmospheric pressure systems can all influence June conditions in São Paulo. Breaking news about unusual weather systems or climate anomalies could trigger rapid repricing. As the date approaches, refinements to professional forecasts typically narrow uncertainty and may consolidate market odds around a tighter range.