Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
97% | 3% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 27°C | 97% |
| 28°C | 3% |
| 25°C or below | 0% |
| 26°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C or higher | 0% |
Market context
Shenzhen is facing a heavy thunderstorm and morning showers on 16 July, with cloud cover and drizzle suppressing any chance of extreme heat today. Current readings at Bao'an International Airport show temperatures hovering around 31°C with 89% humidity, while forecasts predict heavy rain totaling 58mm, peaking in the early hours [3][5]. These conditions directly explain the crowd-implied 0% probability for a high-temperature outlier, as precipitation and overcast skies act as immediate thermal dampeners.
Historical July data for Shenzhen typically sees daily highs between 29°C and 34°C, with an average of 32°C, but extreme peaks above 36°C are rare and usually require prolonged clear skies and high-pressure systems [1]. The current wet, unstable pattern mirrors cooler, rain-heavy July days in recent years where temperatures failed to breach 33°C, reinforcing the market’s bearish stance. Comparable cases from past humid, stormy Julys show highs rarely exceeding 32°C, aligning with today’s low probability for a heat spike.
Traders should monitor the timing and intensity of the morning thunderstorm and late-afternoon drenching event, as any delay or reduction in rainfall could briefly lift temperatures. Watch for real-time updates from Wunderground and AccuWeather, which track the Bao'an station’s hourly highs [3]. The settlement depends entirely on the peak temperature recorded before 12:00 UTC, so any sudden clearing before midday could shift probabilities, though current models suggest rain will persist through the settlement window [3][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 Prediction Today, 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
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today 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.
Trade Highest temperature in Shenzhen on July 16? on Prediction Today
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