Highest temperature in Chengdu on August 17?

Platform comparison

Market context

Chengdu is heading into a warm, unsettled spell on 17 August, with the most widely cited forecasts clustering the day’s high in the high-20s to low-30s Celsius. Forecasts for Chengdu Shuangliu International Airport point to roughly 27–31°C, while some services lean a touch cooler or warmer, which is consistent with late-summer humidity and intermittent showers limiting the upside on daytime highs.

That is a useful framing for a market that resolves off the highest reading in the airport station’s Daily Observations table rather than a summary graphic. In practice, the 0% yes price suggests traders are treating the current range as effectively settled around a single band, with little evidence of an extreme heat case or a sharp forecast change. Comparable Chengdu August patterns usually leave the afternoon high dependent on cloud cover and rainfall timing, so the main risk is a modest upward or downward shift rather than a large break from the prevailing forecast.

The key catalyst is the next round of short-term model updates and station-level observations through 17 August, especially any morning shower clearing earlier or later than expected. If skies brighten before midday, the airport temperature could push towards the upper end of the current forecast range; if cloud and rain linger, the reading should stay closer to the lower end. The market is therefore leaning most heavily on near-term weather model consistency rather than any scheduled announcement or external event.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Chengdu on August 17? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

UK Frequently Asked Questions

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.