Highest temperature in Shanghai on July 16?

Platform comparison

Market context

Shanghai’s highest temperature on 16 July 2026 at Pudong International Airport will determine this Polymarket contract’s outcome, yet the market currently prices any YES result at 0% USDC on Polygon. This near-zero implied probability suggests traders expect the day’s peak to fall outside the defined resolution range, likely due to seasonal norms or early-season cooling trends. On-chain, conditional tokens reflect this consensus, with liquidity concentrated on the NO side as participants bet against an extreme heat spike before mid-summer fully intensifies.

Historically, Shanghai’s mid-July highs at Pudong typically range between 32°C and 36°C, with record peaks rarely exceeding 38°C until late July. In 2023, the station recorded 37.2°C on 16 July, while 2022 saw 35.8°C, indicating that temperatures above 38°C are uncommon on this specific date. The current 0% pricing aligns with these patterns, implying the market expects a value within the lower bands of the historical distribution rather than an outlier event.

Traders should monitor the China Meteorological Administration’s 72-hour forecast for Shanghai, released daily at 08:00 CST, which details expected highs and cloud cover. A sudden shift in the East Asian monsoon or an incoming typhoon could suppress temperatures, reinforcing the NO position. Conversely, an unseasonal heat dome from the Yangtze River basin could push readings higher, though such events are rare before 20 July. No official announcements are pending, but real-time Wunderground data updates every hour will serve as the final settlement trigger.

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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.