Pronóstico: Highest temperature in Beijing on June 30?

Platform comparison

Market context

The underlying real-world event is whether Beijing’s highest temperature on 30 June 2026 will reach the 35°C–39°C range, a threshold that currently carries a crowd-implied probability of 0% YES on Polymarket. This pricing reflects the market’s view that such a temperature is unlikely, despite historical patterns showing Beijing frequently hits 35°C or above in June. According to Weather Spark, daily highs in Beijing during June typically rise from 84°F to 87°F (29°C to 31°C), rarely falling below 73°F (23°C) or exceeding 96°F (36°C)[1]. Travel China Guide notes that historically, about 10 days in June see highs of 35°C (95°F) or more, with significant temperature variability still possible[2].

Traders should monitor upcoming weather forecasts and any official heatwave announcements from Chinese meteorological authorities, as these can shift on-chain conditional token valuations rapidly. A recent BBC report highlighted that Beijing recorded its hottest June day in over 60 years, reaching 41.1°C (105.9°F), underscoring the potential for extreme spikes even in months deemed “moderate”[3]. Reuters further confirmed this record, noting the 41.1°C reading was the city’s second-highest ever, reinforcing the volatility of June temperatures in the capital[4]. On Polymarket, USDC trades on the Polygon network, where conditional tokens adjust instantly to new data, making real-time news critical for positioning.

The settlement window ends 2026-06-30T12:00:00Z, with resolution sourced from Wunderground’s Beijing Capital International Airport Station data. While current pricing suggests low odds, the historical precedent of extreme June heat in Beijing means the market may be underestimating tail risk. AccuWeather’s June 2026 forecast shows daily highs ranging from 77°F to 94°F (25°C to 34°C), with an average high of 87°F (31°C), but this range does not rule out occasional peaks above 35°C[9]. Conditional token holders must weigh these facts against the 0% YES probability before the clock runs out.

Sources: 1 · 2 · 3 · 4 · 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 Polymarket Argentina, 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 Polymarket Argentina. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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.

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.