TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 29, 12:59 AM EST
Kalshi
This event tracks the highest temperature recorded at Philadelphia International Airport on June 28, 2026. The outcome will be determined by the official National Weather Service Climatological Report (Daily) for that date, with resolution into one of six temperature ranges.
Resolution is based on the maximum temperature recorded at Philadelphia International Airport according to the National Weather Service's Climatological Report (Daily). The temperature is divided into six ranges: 80°F or below, 81-82°F, 83-84°F, 85-86°F, 87-88°F, and 89°F or above. Each range corresponds to a distinct outcome. The official NWS Climatological Report (Daily) serves as the authoritative data source; preliminary NWS reporting and measurement methods may involve rounding and conversion nuances, so traders should exercise caution when interpreting preliminary data. While other weather sources may provide guidance, only the NWS Climatological Report (Daily) determines final resolution.
Prediction market odds often diverge from traditional weather analyst forecasts because they incorporate real-time trader behavior and incentives. While meteorologists rely on atmospheric models and historical data, this market aggregates the beliefs of participants who have financial skin in the game. Traders may price in tail risks or consensus shifts faster than official forecasts update. Comparing the odds here to published seasonal outlooks or National Weather Service guidance can reveal where the market sees asymmetric opportunities or where professional forecasters and traders align on temperature expectations for late June in Philadelphia.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares corresponding to different temperature ranges. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each outcome has a bid-ask spread, and the midpoint reflects the current market consensus. Prices range from 0 to 100 cents per share, with higher prices indicating greater perceived likelihood. As traders place orders, the spreads tighten or widen based on liquidity and conviction, allowing you to enter or exit positions at transparent, real-time rates.
This market resolves around Jun 29, 2026, after June 28, 2026 has concluded. The outcome is determined by the verified highest temperature recorded in Philadelphia on that date, confirmed once the event is verifiable from credible public reporting. Traders should monitor official weather data sources as the date approaches to understand how the final reading will be established and which temperature bracket will ultimately settle in the money.
Several factors can shift odds in this market over the coming months. Updated seasonal climate forecasts, particularly those issued by NOAA or other meteorological agencies, often trigger repricing as traders incorporate new model runs. Unusual heat waves or cold patterns in the preceding weeks may alter expectations for late June conditions. Long-range oscillations like El Niño or La Niña cycles can influence regional temperature patterns. As June 2026 approaches, daily weather forecasts will become more precise, and traders will adjust positions based on the most recent atmospheric data and ensemble model consensus.