Highest temperature in Chongqing on June 26?

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Market context

On 26 June 2026, the Chongqing Jiangbei International Airport Station will record its peak daytime temperature, a metric that directly determines the outcome of the prediction market. The current crowd-implied probability of 0% for a "YES" resolution suggests the market expects the temperature to fall outside the specified range, likely due to prevailing forecasts of cooler conditions or cloud cover. This stark divergence from sportsbook lines on similar weather contracts—where odds often reflect a more balanced view of extremes—raises questions about whether the prediction market is underestimating the volatility typical of Chongqing’s early summer.

Historical data frames this probability with caution, as Chongqing is notorious for extreme heat, with 149 days since 1951 recording maximums of 40°C or higher[4]. The hot season, spanning from late June to early September, typically sees average daily highs above 85°F (29.4°C)[2], and the city’s record peak of 43.2°C was reached in August 2022[7]. While June 21 recently saw temperatures driven toward 31–32°C by a subtropical high-pressure ridge[5], the current 0% probability implies a significant deviation from these patterns, possibly due to an unexpected shift in the ridge or increased monsoon activity.

Traders should monitor real-time updates from Wunderground, the official resolution source, for any sudden changes in the subtropical ridge’s position or incoming cloud cover[5]. Recent forecasts from PredictWind indicate detailed historical records for June 2026, including temperature and rainfall trends, which could signal whether the ridge is weakening or strengthening[3]. Any announcement of a shift in the monsoon front or a change in the high-pressure system could act as a catalyst, altering the temperature trajectory and potentially invalidating the current 0% implied probability.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Chongqing on June 26? 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

Is this market available outside the US?

Best Prediction Markets UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

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, Best Prediction Markets UK triggers a quick verification flow that finishes in minutes.

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.