Highest temperature in Shenzhen on August 8?

Platform comparison

Market context

Shenzhen’s highest recorded temperature on 8 August is likely to land in the low-to-mid 30s Celsius, with major weather sites clustering around a forecast high of about 34–35°C for today and a few showing 97°F, which is roughly 36°C.[4][10][13][15] That makes the market’s current 0% YES imply an extreme mismatch with the broader weather picture; by comparison, temperature markets usually trade off the forecast band, not the precise resolution source, and here the contract resolves to the Daily Observations table rather than the summary high/low display.[4][9]

Historical context also points to heat rather than an outlier cool reading. August normals for Shenzhen are broadly around 28–32°C highs, with average August highs commonly cited near 90°F/32°C and rainfall/humidity remaining elevated, while one climate guide notes an August 8 daily high of 35°C in Shenzhen.[1][11][16] Another historical-weather source shows Shenzhen reaching 95°F at midday on a recent August 8, reinforcing that sub-35°C outcomes are possible but not the base case in peak summer.[5][9] On that read, the crowd-implied 0% YES sits well below the climatological and forecast consensus.

Traders should watch the afternoon progression at Shenzhen Bao’an International Airport, because the settlement source is the station’s Daily Observations table and the day’s maximum can still edge up after early-morning readings.[4][9] The main dependency is whether late-day cloud, sea-breeze moderation, or convective rain clips the top end of the forecast range; AccuWeather flags a hot day with a stray evening thunderstorm, while other services keep the daytime high near 34–35°C.[10][15][18] In cross-platform terms, sportsbook-style weather pages and forecast sites are signalling a hot day, whereas the prediction-market price is effectively treating the contract as nearly impossible, creating a wide divergence that only a clearly cooler station observation would justify.[4][10][15]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi vs Polymarket, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi vs Polymarket. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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'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.

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.