Highest temperature in Tokyo on July 14?

Platform comparison

Market context

Tokyo's peak temperature on 14 July 2026 will be recorded at Haneda Airport Station and settled against historical weather data. The settlement window closes at noon UTC on that date, meaning traders must account for any final temperature spike in the early morning hours before the official close. The 0% crowd probability suggests either extreme confidence in a specific temperature band or minimal liquidity across all outcome ranges on this particular market.

July temperatures in Tokyo typically peak between 32–35°C, with occasional days exceeding 36°C during heat waves. Historical data from the Japan Meteorological Agency shows that mid-July averages around 33°C, though the 2010 heatwave pushed readings above 39°C. Comparing across platforms, Polymarket's implied probability display and Kalshi's decimal odds structure will diverge visibly here—Kalshi's binary YES/NO framework suits weather ranges less naturally than Polymarket's categorical outcome design, which may explain why this market shows stronger liquidity on the latter. Betfair and Smarkets offer similar categorical structures to Polymarket but charge different commission rates (typically 2–5%) that compound across multiple outcome bets.

Traders should monitor Japan Meteorological Agency forecasts released 7–10 days before the settlement date, as seasonal patterns and any approaching typhoon systems significantly alter peak-day temperatures. Recent July 2024 and 2025 data from Wunderground will provide the most reliable baseline for calibrating probability across temperature bands. KYC requirements vary by platform—Kalshi requires full US residency verification, whilst Polymarket and Betfair serve broader international audiences—which may affect which book shows the most active price discovery on this event.

Methodology

This page compares Highest temperature in Tokyo on July 14? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.