Highest temperature in Wuhan on July 19?

Platform comparison

Market context

Wuhan's peak temperature on 19 July 2026 will be recorded at Tianhe International Airport Station and settled against historical data from Weather Underground. The settlement window closes at 12:00 UTC on that date, capturing the highest reading across all daylight and overnight hours. This is a straightforward weather observation contract with no discretionary elements—the resolution depends entirely on instrumental measurement at a single, fixed meteorological station rather than regional averages or subjective assessments.

Wuhan sits in the Yangtze River valley and experiences a humid subtropical climate with pronounced summer heat. Historical July temperatures at Tianhe typically peak between 32–38°C, with extreme readings occasionally exceeding 40°C during heat waves. The current 0% crowd probability suggests traders are either awaiting clarification on the specific temperature bands available for settlement or treating this as a placeholder until the market's full option range is visible on-chain. Comparable July heat events in central China have produced readings of 39–41°C during anomalous years, providing a baseline for calibrating expectations.

The key variable is whether an early-summer monsoon pattern or a high-pressure ridge dominates atmospheric conditions over the Yangtze region in mid-July 2026. China's meteorological forecasts typically become reliable 10–14 days ahead; traders should monitor updates from the China Meteorological Administration and regional weather models as mid-July approaches. USDC settlement will execute against the verified Wunderground historical record once the observation window closes, with no appeals process available post-resolution.

Methodology

This page reads Highest temperature in Wuhan on July 19? 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

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.

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.