TOTAL VOLUME:
$134.2b
24H VOL:
$126,590,312
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,439,516,703
404,175
Markets across
30,277
events
MATCHED EVENTS:
2,685
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 3, 12:59 AM EST
Kalshi
This market tracks the highest temperature recorded at Philadelphia International Airport on July 2, 2026, as reported by the National Weather Service's official daily climatological report. The outcome depends on which temperature range the recorded high falls within on that specific date.
Resolution is determined by the highest temperature recorded at Philadelphia International Airport on July 02, 2026, as reported by the National Weather Service's Climatological Report (Daily). The official NWS report serves as the authoritative source; preliminary data from other weather services may differ due to rounding and measurement methodology variations. Traders should rely on the final NWS Climatological Report (Daily) for accurate resolution, as preliminary NWS reporting may contain nuances in conversion and rounding that affect the final determination.
Prediction market odds reflect real-money bets from traders who profit or lose based on accuracy, creating strong incentives for honest price discovery. Analyst forecasts, by contrast, rely on meteorological models and expert judgment but lack direct financial accountability. This market aggregates dispersed trader knowledge into a single probability, often capturing nuances that individual forecasts miss. Comparing the two reveals whether professional meteorologists and market participants align on the likelihood of extreme heat in Philadelphia that day, or where meaningful disagreement exists.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares representing different temperature ranges or outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The bid-ask spread reflects the market's liquidity and uncertainty; tighter spreads indicate high confidence and trading activity, while wider spreads suggest lower participation or genuine disagreement about the likely high temperature. Your entry and exit prices depend on the current order book depth and the size of your trade.
This market resolves around Jul 3, 2026, after July 2, 2026 has passed and the day's weather data is finalized. The outcome is determined by the highest temperature recorded in Philadelphia on that date, verified against credible public sources. Once the event is confirmed and verifiable from official weather reporting, the market settles and traders' positions are credited or debited according to the final result and their positions.
Major weather pattern shifts, seasonal forecasts, and climate anomalies can all influence trader expectations and move odds significantly. Long-range meteorological updates, El Niño or La Niña developments, and historical heat records for early July in Philadelphia may prompt repricing. As summer 2026 approaches, near-term forecasts become more reliable and typically trigger sharper price moves. Breaking news about atmospheric conditions, heat waves in neighboring regions, or revised climate outlooks will likely drive trading activity and shift the market's probability estimate.