TOTAL VOLUME:
$134b
24H VOL:
$87,997,338
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,395,155,069
395,664
Markets across
30,076
events
MATCHED EVENTS:
2,626
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 17, 1:00 AM EST
Kalshi
This market tracks the highest temperature recorded in Boston on June 16, 2026. The outcome will be determined using official data from the National Weather Service's daily climatological report for Boston Logan Airport, which serves as the authoritative source for temperature measurement in the region.
Resolution is based on the maximum temperature recorded at Boston (Logan Airport), MA on June 16, 2026, as reported in the National Weather Service's Climatological Report (Daily). The official data source is accessed via the NWS website under the Boston forecast office, Observed Weather section. Temperature ranges are divided into six outcomes: 76°F or below, 77-78°F, 79-80°F, 81-82°F, 83-84°F, and 85°F or above. Traders should note that preliminary NWS data may be subject to rounding and conversion nuances, and the final official NWS Climatological Report (Daily) serves as the definitive resolution source, superseding other weather services like AccuWeather or Google Weather.
Prediction market odds reflect aggregated trader conviction and often incorporate meteorological forecasts, historical climate data, and seasonal trends that professional analysts also consider. Unlike static analyst reports, this market updates continuously as new information arrives, allowing prices to adjust faster than traditional forecasts. Traders betting real capital have a financial incentive to incorporate the latest weather models and long-range climate signals. Over time, prediction markets have demonstrated competitive accuracy against expert consensus, particularly when liquidity is sufficient and participants have diverse information sources.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares corresponding to different temperature outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each contract represents a specific temperature range or threshold, and the market price reflects the collective probability assigned by active participants. As traders submit bids and asks, prices adjust in real time to balance supply and demand. The spread between buy and sell prices tightens as more liquidity enters the market, rewarding early participants who help establish price discovery.
This market resolves around Jun 17, 2026, once the highest temperature recorded in Boston on June 16, 2026 is verified against credible public sources. The outcome is determined by official meteorological data reported by recognized weather monitoring agencies. Traders holding shares in the correct outcome receive their payout, while incorrect positions expire worthless. The resolution process is designed to be transparent and objective, removing ambiguity about which temperature reading is final.
Long-range weather forecasts and seasonal climate patterns are primary drivers of price movement in this market. As June 2026 approaches, updated meteorological models will refine expectations for heat and humidity in the Boston region. El Niño or La Niña conditions, Atlantic hurricane activity, and broader climate anomalies can all influence summer temperatures. Historical heat waves, urban heat island effects, and atmospheric pressure systems will factor into trader calculations. News about climate trends or unexpected weather events in preceding months may also shift market sentiment as participants reassess probabilities.