Highest temperature in Chengdu on July 23?

Platform comparison

Market context

The real-world event is the **highest temperature recorded at Chengdu Shuangliu International Airport on 23 July 2026**, with settlement based on the Wunderground daily history page and the market resolved in **USDC** once the final range is known. The contract is still open while the day is in progress, so the relevant price signal is not a final print but the implied distribution across temperature bands as the afternoon heat develops.

A 0% YES reading is harder to square with the live market distribution, because the current frontrunner on Polymarket is **38°C at 44%**, with **39°C at 22%** next in line.[1] For a summer Chengdu temperature market, the key framing is whether the day reaches the upper end of the usual hot-season envelope or stalls a band lower; that distinction matters more than small intra-day moves until the afternoon maximum is set. In practice, these contracts often reprice sharply once the daytime high becomes more visible in the forecast and early observations.

The main catalysts are the local forecast updates, any heat advisories, and the timing of the peak temperature itself, which usually lands later in the local afternoon rather than near the UTC settlement window. Traders also watch broader crypto conditions because prediction-market pricing can tighten or loosen with BTC and ETH volatility, though weather contracts are driven primarily by the underlying meteorology rather than on-chain flow. If the broader market is risk-on and active, liquidity in the band closest to the expected high can shift quickly as new forecast information is absorbed.[1]

Sources: 1

Methodology

This page reads Highest temperature in Chengdu on July 23? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

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.

How volatile are crypto prediction markets?

Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.

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.

Are crypto prediction markets taxable in the US?

In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.