Highest temperature in Shenzhen on August 2?

Platform comparison

Market context

The event is the **highest temperature at Shenzhen Bao'an International Airport Station on 2 August**, as captured by Wunderground’s daily history page and mapped into the market’s Celsius ranges. For a programme or bot, the clean way to handle it is to poll the station’s daily maximum after the settlement window closes, then convert the reported value into the market’s bracketed interval and only submit a resolution once the Wunderground record is final.

The current **0% YES** implies the market is pricing in either a very low chance of a qualifying reading or a mismatch between the live outcome and the offered temperature bands. That is not obviously consistent with Shenzhen’s August climatology: multiple weather-history sources put typical August highs around **32–32.8°C** and commonly near **89–91°F**, with daily highs often clustering close to 31–35°C and occasional hotter spikes.[2][4][6][10][17] For a trader using conditional orders or copy-trading, the key framing is that the market is not asking about the average day, but the single maximum for the calendar date, which can be lifted by a short-lived afternoon heat peak even if the day otherwise turns stormy.

The main catalysts are the local forecast cycle, typhoon or thunderstorm disruption, and any sharp change in cloud cover or rainfall near the airport station. Shenzhen in August is typically hot, humid, and prone to heavy showers or thunderstorms, with some sources explicitly flagging a higher typhoon risk in the month.[4][17] In practice, a power-user would watch pre-dawn and morning forecast updates, then compare them with midday convection signals and airport-area observations, because a rain-cooled morning does not prevent a late spike if cloud breaks develop before the settlement cut-off.

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 Polymarket Bot UK, 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

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.

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 Bot UK 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.