Highest temperature in Shanghai on July 10?

Platform comparison

Market context

The real-world event at stake is the highest temperature recorded on 10 July 2026 at Shanghai Pudong International Airport, measured in degrees Celsius and resolved via Wunderground data. Historical patterns for this location show July is the hottest month, with average highs near 87°F (30.6°C) and frequent peaks exceeding 35°C (95°F) during sunny spells[3][5]. Current 2026 forecasts for July indicate daily highs ranging from 86°F to 97°F (30°C to 36°C), confirming that temperatures well above 30°C are typical[2]. The crowd-implied probability of 0% for any specific outcome suggests a market mispricing, as no single temperature range can logically be impossible given the consistent historical and forecasted data.

Traders should monitor real-time meteorological updates, particularly cloud cover and wind speed, which directly influence peak temperatures. Wind speeds at Pudong are increasing through July, rising from 11.3 mph to 12.4 mph, potentially moderating extreme heat[1]. Solar energy incident is also gradually increasing, rising by 0.5 kWh over the month, which could drive higher temperatures if skies remain clear[1]. Recent hourly forecasts for 10 July show a maximum of 32°C (90°F) at 14:00, aligning with seasonal norms[4]. Analyst consensus on similar weather contracts typically assigns non-zero probabilities to all plausible ranges, highlighting a divergence from the current 0% market line that warrants cross-platform odds comparison.

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 Best Prediction Markets 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 Best Prediction Markets 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.