Highest temperature in Shanghai on June 10?

Platform comparison

Active sub-markets

Market context

Shanghai's daily maximum temperature on 10 June 2026 will be recorded at Pudong International Airport Station and settled against historical weather data. The 0% crowd probability reflects either extreme confidence in a specific temperature band or minimal trading activity on this particular recurring date. Across platforms, this market illustrates divergent approaches to niche weather contracts: Polymarket's decimal odds format and lower KYC barriers attract retail traders willing to price low-liquidity events, whilst Kalshi's regulated US-domiciled structure and implied probability display appeal to those seeking transparency in odds conversion. Betfair and Smarkets, operating under European frameworks, typically show higher participation on recurring seasonal markets but charge different commission structures—Betfair's 5% exchange fee versus Smarkets' variable maker-taker model—which affects edge calculations on tight temperature bands.

Historical June temperatures in Shanghai range from 24°C to 32°C, with 10 June typically falling in the early monsoon season when humidity rises sharply but extreme heat remains uncommon before July. The Shanghai Meteorological Bureau's records show that mid-June highs cluster around 28–30°C, making bands above 32°C or below 24°C statistical outliers. Traders should monitor the East Asian summer monsoon onset timing and any tropical cyclone activity in the Western Pacific during early June 2026, as these systems can suppress temperatures significantly. The settlement window closes at 12:00 UTC on 10 June, creating a hard deadline for Wunderground data availability—a dependency worth verifying across platforms, as some books may experience delays in accessing the official airport station readings.

Methodology

We read Highest temperature in Shanghai on June 10? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Is this market available outside the US?

Kalshi Alternative UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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'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 it cost to trade on Kalshi Alternative UK?

Zero. Kalshi Alternative UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.