Highest temperature in Chongqing on July 27?

Platform comparison

Market context

Chongqing’s highest temperature today will be set by the reading at Jiangbei International Airport, with settlement based on Wunderground’s daily history page for that station. In practical terms, the market is a straight weather-ranges bet: the final USDC payout depends on which Celsius band contains the day’s recorded peak, so traders are really pricing the afternoon maximum rather than the city’s broader climate average.

The current 0% YES price looks misaligned with the seasonal backdrop. July is typically Chongqing’s hottest and rainiest month, with average temperatures around 28°C, an average high of 33°C, and frequent thunderstorms, while the rainy season runs from May to September and accounts for about 70% of annual rainfall.[1][2] That does not make any single bracket certain, but it does mean the distribution is usually skewed towards warm outcomes, and on-chain markets often reprice quickly when a venue’s implied range is far from the local weather norm.

Traders should watch for late-day heat, cloud cover and convective rain, because both can cap the final airport reading after a hot morning. In crypto terms, the relevant catalysts are not BTC or ETH spot moves themselves, but whether wider market risk appetite affects liquidity and quote depth on the contract; if funding or whale flows are distracting attention, the weather book can still move on local meteorology alone. Polymarket’s live board currently shows 39°C and 38°C as the leading outcomes, which reinforces that the market is treating this as a high-summer heat event rather than a mild one.[3]

Sources: 1 · 2 · 3

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

What are crypto prediction markets?

Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.

Why USDC and not ETH or USDT?

USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.

What does a transaction cost on Polygon?

Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.

Can I use Bitcoin directly?

No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.

Which crypto markets exist on Polymarket?

Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.