Highest temperature in Tokyo on July 24?

Platform comparison

Market context

Tokyo’s daytime high on 24 July is being measured against Tokyo Haneda Airport Station, with settlement based on the maximum temperature recorded that day in Celsius. Tokyo in July typically sits near 30°C for daytime highs and around 25°C for lows, so the market only pays out if the day lands in an unusually cool band relative to normal midsummer conditions; at 0% YES, the crowd is effectively pricing a reading below the first listed strike range. [1]

The key historical frame is that this is a weather event with a narrow, data-source-specific endpoint: the number that matters is the highest Haneda reading published by Wunderground for the full day, not a citywide forecast or an average temperature. That makes the comparison between venues important: Polymarket-style markets quote an implied probability, while Kalshi and Betfair-style interfaces are usually easier to read through contract prices or decimal odds, and Smarkets typically shows prices net of its own commission structure. KYC access also differs materially by platform and jurisdiction, so the same weather view can trade very differently depending on where a user is onboarded.

For catalysts, traders should watch the Tokyo forecast evolution through the morning and any changes to cloud cover, rainfall, or sea-breeze suppression of daytime heating. July in Tokyo is often wet, with the cited forecast set showing significant rainfall and more than 24 rainy days in the month, which can cap the maximum if showers arrive early or persist through the afternoon. Because settlement closes at noon UTC, the main move is usually driven by the first half of the local day, when a stronger-than-expected early warm-up can still flip the highest reading into a higher bucket before any later cooling or rainfall. [1]

Sources: 1

Methodology

This page compares Highest temperature in Tokyo on July 24? 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 UK, 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.

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.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative UK offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.