Highest temperature in Chengdu on August 14?

Platform comparison

Market context

On 14 August 2026, the highest temperature recorded at Chengdu Shuangliu International Airport will determine this market's resolution. The settlement window closes at midday UTC, requiring traders to assess peak daytime conditions during mid-summer in Sichuan Province. Weather Underground's Daily Observations table—not the summary Day High & Low section—serves as the authoritative source, a distinction that occasionally matters when automated systems report conflicting figures.

Chengdu's August climate presents a narrow historical band. Over the past decade, mid-August highs have ranged between 32–36°C, with extreme readings above 37°C occurring roughly once every three to four years. The current 0% implied probability across major platforms suggests traders are pricing in either exceptionally cool conditions or systematic uncertainty about the specific temperature threshold being tested. Kalshi and Betfair typically display decimal odds formats that can obscure these low-probability tails, whilst Polymarket's percentage-based interface makes marginal probabilities more visible—a structural difference that affects how traders perceive tail-risk scenarios.

Monitoring China Meteorological Administration forecasts released in early August 2026 will be essential. Tropical systems tracking into central China during late summer can suppress temperatures significantly, whilst high-pressure systems over the Tibetan plateau drive heat into the Sichuan basin. The specific resolution threshold matters considerably; traders should verify which temperature range the market is testing against historical norms and confirm that Weather Underground's station data aligns with official Chinese meteorological records before settlement.

Methodology

We read Highest temperature in Chengdu on August 14? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.