Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Prediction Today Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Prediction Today → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Prediction Today → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Prediction Today → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Prediction Today → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Prediction Today → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Prediction Today.
Active sub-markets
Market context
Shenzhen's early June weather pattern is entering its pre-monsoon transition phase, with atmospheric pressure systems shifting northward and humidity climbing steadily. The past 48 hours have seen subtropical high-pressure ridges weaken slightly across southern China, though daytime heating remains intense at this latitude. Current meteorological models show no significant cold fronts or tropical systems tracking toward the Pearl River Delta on 8 June 2026, suggesting conditions will favour conventional diurnal temperature cycles rather than anomalous extremes.
Historical June records at Shenzhen Bao'an Airport show maximum temperatures typically range between 32–35°C, with occasional spikes to 36–37°C during particularly intense heat-dome episodes. The 30-year climatological mean for early June maxima sits around 33°C. Comparable years with similar atmospheric setups—stable subtropical ridging without monsoon disruption—have produced highs in the 33–35°C band. The 0% crowd probability currently assigned suggests traders are pricing in either extreme uncertainty about which temperature bracket will resolve, or systematic underestimation of typical June heating patterns in this region.
Watch for updates from China Meteorological Administration forecasts released 5–7 June, which will clarify whether any unexpected tropical moisture or upper-level troughs develop. Sea-surface temperatures in the South China Sea remain above normal for the season, potentially influencing convective activity. Settlement depends on Wunderground's historical data feed from the airport station, which occasionally experiences brief reporting gaps during severe weather but has maintained consistent daily records throughout June in recent years.
Methodology
We track Highest temperature in Shenzhen on June 8? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Where can I trade this market with the lowest fees?
- On Prediction Today, which mirrors the Polymarket order book at 0% fees. 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 it cost to trade on Prediction Today?
- Zero. Prediction Today routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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?
- Not under $1,500 of lifetime trading volume. Above that threshold, Prediction Today triggers a quick verification flow that finishes in minutes.
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