Pronóstico: Highest temperature in Beijing on July 20?

Platform comparison

Market context

Beijing’s highest temperature on 20 July 2026 at the Capital International Airport station will settle this Polymarket contract, with the crowd currently pricing a YES outcome at 0%. On Polygon, traders use USDC to buy conditional tokens tied to specific Celsius ranges, locking in positions before the 2026-07-20T12:00:00Z settlement deadline. The market’s zero probability suggests the community expects the peak heat to fall outside the defined YES range, likely due to historical patterns or seasonal forecasts.

Historically, late July in Beijing sees peak temperatures between 33°C and 39°C at ZBAA, with 20 July 2023 hitting 38.2°C and 2024 reaching 37.5°C, according to Wunderground’s daily archives. These comparable cases show that extreme heat above 40°C is rare but not impossible, while temperatures below 30°C are uncommon in midsummer. The 0% YES probability implies the contract’s YES range is set either too high or too low relative to these norms, making the current pricing a clear signal of misalignment with historical data.

Traders should monitor the Beijing Meteorological Bureau’s 72-hour forecast released each morning, which details expected peak temperatures and humidity levels. A recent update from China Daily on 18 July 2026 noted a weakening monsoon front, potentially reducing cloud cover and increasing daytime heating. Watch for any sudden shifts in the bureau’s advisories or Wunderground’s real-time station data, as these will directly impact the final settlement value. The on-chain mechanics ensure transparent resolution, with no room for dispute once the official temperature is recorded.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Qué Es trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.